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					 What‟s New with EMC NetWorker
 IIM Customer Conference – February 21st 2008




Mickey Friedman – Technical Director, NetWorker




 EMC CONFIDENTIAL—INTERNAL USE ONLY               1
NetWorker at center of EMC Backup Portfolio



                                     De-duplication
   Disk Backup, Replication,                                Physical or Virtual
       Snapshots, CDP
                                                      VM1     VM2      VM3         VM4


                                                            APP              APP
                                                            OS               OS



                                                              ESX Server
                                                                  Hardware



                                                      CPU Memory        NIC        Disk




      Server Recovery and              NetWorker
           Migration                                  VTL, Disk Staging and
                                     Analytics and       Cloning, Tape
                                      Monitoring




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Trivia


What is MTR ?

1. Maximum Transfer Rate
2. Median Transfer Rate
3. Minimum Transfer Rate
4. Marking Tape Reusable



                           Minimum Transfer Rate –
                            The Minimum rate one should send
                             to tape to eliminate “shoe shining”

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 Trivia


There is only ONE tape drive in the industry that doesn‟t shoe shine.
Which one is it ?


1.   IBM LTO -4
2.   Sony Super AIT (S-AIT)
3.   SDLT
4.   All WORM Drives




                       Sony S-AIT – And you’ll
                       never guess how…

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Trivia


Which one of the following is the most recommended backup policy (for
   the majority of customers)


1. Full every month , Differential every weekend, incremental every day
2. Full every weekend, incremental every day
3. Full every quarter, differential every 1st of month, incremental every
   day
4. Full once, incremental forever



    Full Every Month, Differential every weekend, incremental every day.
    Minimum impact on recovery, less backups, less tape/disk used, less
    failures, more money saved !!
    Note – Will not work with Windows archive bit
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True Or False




                        Multiplexing impacts restores




                                     Not Exactly
        Can impact restore speed if resulting throughput is less than
                       LAN/client/filesystem speed
Multiplexing can actually help large restores of all backups


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True Or False ?




         Backup to Disk is faster than Backup to Tape




                            FALSE – Adding
                             disk does not
                             mean adding
                             performance
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                     Most Common Backup Mistakes




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Too little power


 Not enough tape drives
 Tape drives that aren‟t fast
  enough
 Not enough slots in the tape
  library
 Not enough bandwidth to the
  server




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Too Much Power


 Even variable speed tape drives have a
  minimum transfer rate (MTR)
 Drives CANNOT write slower than MTR
 Failure to meet MTR causes media/drive
  wear, backup failures
 Must match the speed of the pipe to the
  speed of the tape
 More drives ≠ More throughput
 There is one drive that doesn‟t
  shoeshine, but you‟ll never guess how




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Not Using Multiplexing


 Definition: Sending multiple backups to
  the same drive simultaneously to
  stream drive
 Helps match speed of tape drive
 Essential with LAN based backups
  going to tape                             Backup Job

 Important with LAN-free backups           Backup Job
 Will impact read throughput of an
  individual stream
 Can impact restore speed if resulting
  throughput is less than
  LAN/client/filesystem speed
 Multiplexing can actually help large
  restores of all backups


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Not Using Multistreaming


 Defined: Sending multiple
  simultaneous backup jobs from
  a single client
 Large systems can not be
  backed up serially                 Backup Job

                                     Backup Job
 Multistreaming creates a
  different job for each file        Backup Job
  system, or multiple streams for
                                     Backup Job
  a database




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Using Include Lists


 Most major backup software
  supports file system discovery
 Still, many administrators still
  use manual created include
  lists
 Any perceived value is
  significantly outweighed by the
  risk they create




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Too Many Full Backups


 If you are using a commercial backup
  and recovery product with automated
  media management and multiple
  levels, weekly full backups are a waste
  of tape, time and money
 Monthly full backup, weekly differential
  backup (level 1) and daily incremental
  (level 9) works just as well and use
  much less tape
 Must use something other than archive
  bit for this to work




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Not Standardizing


 Creating custom
  configurations for each client
  is easier but much riskier
 Creating a standard backup
  client configuration can
  significantly decrease risk and
  increase resource utilization




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Ignoring Backups


 Backups go ignored so often. It‟s like
  they‟re the bill collector nobody wants
  to talk to
 Data protection management
  products can really help automate
  easy reporting
 Don‟t ignore backups, they will bite
  you




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How Hard Can It Be?


 This is just backups, How hard can
  they be?
 The data being backed up has become
  very complex, and the complexity of
  backup systems has matched that
  complexity with equally complex
  functionality




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Not Thinking About Disk


 Tape is not as cheap (and disk is not
  as expensive) as you might think
 Must include price of drives, slots and
  tapes
 Midrange tape libraries range from
  $3-$11 per GB
 Disk prices range from $1-$11 per
  GB
 De-duplication makes disk cheaper
  than tape




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               Avoiding Common
                   Mistakes


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Multiplexing


 Find out compression ration and MTR
 Determine target throughput rate by multiplying compression times MTR
  or advertised native throughput
 Perform multiple tests to see what the throughput of each test is (both
  backup and restore)
 Use the lowest multiplex setting that will stream the drive




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Multistreaming


 If using multiplexing, divide number target throughput by multiplexing to
  get target job rate
 Configure client to send only the number of streams they can support
 For example: if you need 10 jobs to stream a 50MB/s drive, each job is 5
  MB/s. Limit 100Mbit clients to one job, and GigE clients to whatever
  number they can support




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Include Lists


 DON’T USE THEM
 Instead use this:
       – All


 Exclude total garbage (C:\Windows ?)




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Full Backup Frequency


 If your backup software does full backup and can perform differential
  backup (level 1)
 Will not work with archive bits on Windows
 Monthly full backups spread out across the month
 Level 1 backup on the same day as the full (e,g First Friday full, all other
  Fridays, level 1)
 Spreads out load across a month, makes offsite copies much easier to
  create
 Reduces cost and risk
       – Fewer backups mean fewer failures and more success
       – Fewer backups mean fewer tapes, less cost
       – Allows you to make copies, decreasing risk




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Disk


 More on this, later, but if you have data, you should be using disk
 It solves so many problems, it‟s becoming a no-brainer for all sized
  environments.
 This is specially true if you are doing technology refresh




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                                     NetWorker 7.4.1




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NetWorker Trajectory Since EMC Acquisition


      Historic NetWorker problems:
        –     Ancient Windows interfaces
        –     Different Admin interface for UNIX, Windows, both ancient
        –     No basic reporting with NetWorker (free)
        –     Limited “advanced” reporting available
        –     Clunky UNIX recover interface
        –     No de-duplication
        –     No support for VSS
        –     No BMR story

      EMC NetWorker Investment:
        –     Improved Windows Recovery UI in 7.2 & Revamped UNIX recover interface in 7.4
        –     Standardize on NMC in 7.3
        –     Giving away NMC reporting (free)
        –     EBA partnership
        –     Acquisition of Avamar and release of NW 7.4 SP1
        –     NetWorker Module for VSS -> NetWorker Module for Microsoft
        –     Acquisition of HomeBase
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Recent History


 NetWorker 7.4: June 2007
       – client push enhanced UNIX recover UI Symmetrix (scsi) direct backup NMC
         enhancements I18N / L10N License changes

 Modules since June 2007: NMO, NMI, NMS, DB2, SAP, MS-SQL,
  EBMS, NMD, Meditech, NML
 HomeBase 6.0 in November 2007
 NetWorker December 2007 releases / features:
       –   De-Duplication
       –   VMware & VCB support
       –   UI Changes in 7.4 SP1 for De-Dupe
       –   CDP & PowerSnap
       –   EBA 3.0




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                         NetWorker 7.4 SP1 & Deduplication




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Deduplication: Overview and Benefits


 Seamless integration of de-duplication into existing NetWorker save and
  recover.
        –   NetWorker browse and recover workflow unchanged.
        –   Client parallelism is supported
        –   Easy administration, integrated into NMC
        –   Query mechanism is enhanced to support de-dupe savesets.
        –   Reporting in NetWorker management console
        –   Cluster support is expected to follow, post-GA.

 VCB with is supported with deduplication
 Association between NetWorker and Avamar server can be many-to-
  many.
 Of course, NetWorker continues to support regular clients, PowerSnap
  clients...



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Known Issues and Limitations


      Do not put de-dupe backups on tape: as soon as saveset is expired in
       NetWorker and purged from Avamar, the tape is useless.
        –     Staging and Cloning is not supported for de-dupe savesets (tape limitation) in 7.4
              SP1.

      All NetWorker directives that modify data (EG, encryption) are skipped.
      No NetWorker modules support deduplication in this release
      Client parallelism is supported with limitation.
        –     Pure Avamar does not support client parallelism due to cache lock.
        –     NetWorker around this by allocating different cache for each avtar.
        –     We strongly recommend that client parallelism does not exceed 4.

      Directed recovers require the directed recover target host to have
       NetWorker 7.4 SP1 client installed.
      Encourage use of classic full backup to tape once a month if you need
       to archive a tape every month.

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Installation Considerations


 Supported platforms: AIX, HP/UX, Linux, Solaris, Windows and MacOS.
 NetWorker Client package is required on Avamar server.
 Some new binaries are added to the NetWorker client package
        –   nsravtar (All de-dupe supported platforms).
        –   libavctl (shared library. All de-dupe supported platforms)
        –   nsrAvamar (Linux only)
        –   nsrmccli (symbolic link pointing to native mclcli -- Linux only)




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Sample deployment configuration

                                       NW server




                                        NW client             NW storage node
       Avamar server

                                Data                Hashids




                                                                                AFTD




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Architecture


 Save uses special ASM to send all data through nsravtar
 Atomics are sent to Avamar (NetWorker De-duplication Node)
 Hashid is returned and put into a normal NetWorker savestream.
 Store the deduplicated saveset onto a small AFTD


                                           hash id
                save

      de-dupe                                                  atomics
                                     ASM             nsravta
      saveset                                           r
                                                                         Avamar
          AFTD                               Data


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Backup


 Command line options unchanged
 All NetWorker filter directives are honored.
 Send deduplicated savestream to AFTD.
 For existing clients, ensure that first de-dupe backup is full.
 Subsequent full backups will run at much higher speed.
 All NetWorker levels are supported.
 Recommend putting deduplication clients in a separate group.
 The result of the backup:
        – Data is on dedup node.
        – Hashids are on Storage node.
        – Save set is registered as a dedup save set via an extended attribute.

 In addition, de-dupe save sets also contain extra attributes for reporting



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Recover & Scanner


Recovery:
 Usage of browser and recover is unchanged.
 Directed recovers are supported. It requires the directed recover target host
  to have NetWorker 7.4 SP1 client installed.
 Striped (multiplexed) recover is limited to 4 avtar sessions though there are
  more than 4 threads running.
Scanner:
 Scanner can be used to reconstruct the save set in the mediadb.
 It cannot be used to restore the data directly off a AFTD or file type device
  (or tape) since the data is actually hashes.
       – Data associated to each hash is on the dedup node.
       – Don‟t put data on tape: as soon as saveset is expired in NW and purged in Avamar, tape
         is useless.



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Reporting with mminfo


 Mminfo –S –q de-dupe
              ssid=4246722279 savetime=10/24/07 04:36:07 PM (1193268967)
              scip2b081.legato.com:/
                *Data set size: 81,035,784,884.00;
                *De-Dup session id: 1;
                *De-Dup snapup time: 2007-10-24;
                *De-duplication: Yes;
                *De-duplication host: scip2d089.legato.com;
                 *Domain: /NetWorker/scip2b081.legato.com;
              *New data on De-Dup Node: 1,819,753,069.00;
                 *New files: 103426;
                 *Replication host: scip2d088.legato.com;
                 *Size on De-Dup Node: 4,748,760,063.00;
                 *group: Test
 NMC can also report on deduplication info; covered elsewhere




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Purge of save set data from De-Dupe grid


 De-dupe savesets, much like traditional savesets, are deleted based on
  NetWorker retention policies, volume recycle or command (nsrmm)
  deletion.
 De-dupe node acts as a conduit for the asynchronous deletion of de-dupe
  savesets.
 Every six hour a temporary process is invoked by nsrd to delete the snap-
  up on de-dupe node and clean these entries.
 nsrd also cleanup these entries at the time of start-up.
 This is why deduplicated savesets should not go onto tape: once purge is
  done, tape is useless.




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                       NetWorker 7.4 SP1 & VMware Backups




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NetWorker & VMware VCB

 Overview:
  NetWorker 7.4 SP1 improves VMware support
  Removes earlier problems in configuration, reporting and recovery




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Then: NW 7.4 & VCB backups

  Create a client resource for the proxy host (proxy1)on the NetWorker
   Server.
  Specify backup command on the Apps & Modules Tab of the properties
   screen on the client resource for the proxy with the following:
        – save_vcb.bat

  On the General tab use one of the following values for the saveset
        – VM:VM1:C\Documents And Settings:D\OraData
        – VM:VM1
        – VM:VM1:*FULL*

  All the indexes of the backed up saveset are associated with the proxy
   client and will be the mounted paths on the proxy.
  Savesets stored in the media database will look like VM:VM1:C\Data etc.
  Recovery needs to be done on the proxy or the ESX server and transferred
   from there into the VM.


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Then: NW 7.4 VCB configuration




EMC CONFIDENTIAL—INTERNAL USE ONLY   41
Then: NW 7.4 VCB configuration (cont)




EMC CONFIDENTIAL—INTERNAL USE ONLY      42
Then: NW 7.4 VCB recovery




EMC CONFIDENTIAL—INTERNAL USE ONLY   43
Now: NW 7.4 SP1 & VCB backups

  Create a default client resource for the proxy host (proxy1) and a client
   resource for the virtual machine VM1 on the NetWorker Server.
  On the Apps & Modules Tab of the properties screen on the client resource
   for VM1 do the following:
        – Select the proxy backup type as VCB.
        – Input the proxy backup host as proxy1.
  On the General tab fillup with one of the following values for the saveset
        – C\Documents And Settings D\OraData
        – ALLVMFS
        – *FULL* (No indexes are saved, so only saveset recovers can be done on these)
  All the indexes of the backed up saveset are associated with the virtual
   machine VM1 and the indexes are the actual paths on the virtual machine
   VM1.
  Savesets stored in the media database will look like C:\Data etc.
  Directed Recovery can be done directly on the virtual machine VM1 by
   installing NetWorker client on the VM1 apart from the other existing
   recovery mechanisms.

EMC CONFIDENTIAL—INTERNAL USE ONLY                                                       44
Now: NW 7.4 SP1 VCB configuration




EMC CONFIDENTIAL—INTERNAL USE ONLY   45
Now: NW 7.4 SP1 VCB configuration (cont)




EMC CONFIDENTIAL—INTERNAL USE ONLY         46
Now: NW 7.4 SP1 VCB recovery




EMC CONFIDENTIAL—INTERNAL USE ONLY   47
                              NetWorker 7.4 SP1 UI Changes




EMC CONFIDENTIAL—INTERNAL USE ONLY                           48
NMC 3.4.1


 NMC Requirements
       – NMC supports NetWorker 7.1.4 and above servers
       – NMC supports JRE 1.4.x and 1.5
               In NMC 3.4.1 we continue to distribute JRE 1.5 with NMC server
               Note that we also continue to support JRE 1.4.2 in this release

 New NMC Features
       –   De-duplication Node Configuration and Statistics
       –   De-duplication Client Management
       –   Enhanced Save Set Query Interface
       –   New De-duplication Backup Summary Report
       –   Monitoring Avamar Servers




EMC CONFIDENTIAL—INTERNAL USE ONLY                                                49
De-duplication Node Configuration and Statistics


  New NSR De-duplication Node resources are presented in Devices task
   of Administration window
  The user can create, edit, or delete de-duplication nodes in the manner
   similar to other resource types




EMC CONFIDENTIAL—INTERNAL USE ONLY                                           50
De-duplication Node Configuration and Statistics


  New NSR De-duplication Node resources are presented in Devices task
   of Administration window
  The user can create, edit, or delete de-duplication nodes in the manner
   similar to other resource types




EMC CONFIDENTIAL—INTERNAL USE ONLY                                           51
De-duplication Node Configuration and Statistics


  New NSR De-duplication Node resources are presented in Devices task
   of Administration window
  The user can create, edit, or delete de-duplication nodes in the manner
   similar to other resource types




EMC CONFIDENTIAL—INTERNAL USE ONLY                                           52
De-duplication Node Configuration and Statistics


  The de-duplication node table shows de-duplication node statistics
   gathered from respective Avamar servers
  This information could be refreshed on user request by selecting Refresh
   menu item from the main or popup menus




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De-duplication Client Management


  New attributes were added to client resource to enable de-duplication
   backup
  The user can create new de-duplication client, or convert an existing one
  The user will manage client resources with same workflows as before




EMC CONFIDENTIAL—INTERNAL USE ONLY                                             54
De-duplication Client Management


  New attributes were added to client resource to enable de-duplication
   backup
  The user can create new de-duplication client, or convert an existing one
  The user will manage client resources with same workflows as before




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Enhanced Save Set Query Interface



                                      The existing Save Set Query
                                       interface has been extended
                                       to allow the user to request a
                                       particular save set type
                                      The list of save set types
                                       currently supported by
                                       NetWorker includes De-
                                       duplication, NDMP,
                                       Snapshot, Raw, and Normal
                                       save sets
                                      The Status selection has
                                       been modified to match the
                                       Type selection interface
                                      Default value is ALL for both
                                       groups


EMC CONFIDENTIAL—INTERNAL USE ONLY                                      56
Enhanced Save Set Query Interface




EMC CONFIDENTIAL—INTERNAL USE ONLY   57
Enhanced Save Set Query Interface


  New column Type was added to Save Set List table




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New De-duplication Backup Summary Report



      Backup Statistics and Backup Status reports will automatically include
       information on de-duplication save sets
      Users will be able to use groups containing de-duplication clients, as
       well as de-duplication clients and save sets as report parameters in
       the same way they use regular groups, clients, and save sets today
      Additionally, NMC offers a new drill-down De-duplication Backup
       Summary report.
      The report allows customers to view statistical data about de-
       duplication backups. It presents summary information for both de-
       duplication clients and save sets, as well as details about particular
       save set instances
      The collected de-duplication save sets information will be retained in
       the NMC database using the same retention policy as defined for all
       save set data

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New De-duplication Backup Summary Report




EMC CONFIDENTIAL—INTERNAL USE ONLY         60
New De-duplication Backup Summary Report




EMC CONFIDENTIAL—INTERNAL USE ONLY         61
Monitoring Avamar Servers



  NMC will allow the users to monitor system events from Avamar servers
  Avamar system events reflect system activity and operational status,
   such as disk utilization
  Avamar system events have to be acknowledged by the user in order to
   be removed from the Avamar server database
  To enable monitoring Avamar system events, NMC provides support for
   a new managed application type – Avamar Managed Application
  The user could now add Avamar server to the Enterprise Hierarchy as a
   new host, and enable capturing system events.




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Monitoring Avamar Servers




EMC CONFIDENTIAL—INTERNAL USE ONLY   63
Monitoring Avamar Servers




EMC CONFIDENTIAL—INTERNAL USE ONLY   64
Monitoring Avamar Servers




EMC CONFIDENTIAL—INTERNAL USE ONLY   65
Monitoring Avamar Servers




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Monitoring Avamar Servers


  Avamar system events have to be acknowledged by the user in order to
   be removed from the Avamar server database




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Monitoring Avamar Servers


  The user acknowledges Avamar system events by dismissing them from
   NMC




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                           NetWorker PowerSnap 2.4 & CDP




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PowerSnap 2.4 Highights


 EMC NetWorker PowerSnap is a key technology in reducing application
  downtime and data unavailability due to backup operations.
 Supports EMC RecoverPoint‟s Continuous Data Protection technology
  for backup and recovery of Windows for SQL and Filesystems.
 Leverages more EMC storage array features.
 Supports new operating system, application and array combinations.




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EMC RecoverPoint overview




  Application                File and     File and
                                                         RecoverPoint splitter drivers
                 Database
   servers        servers Print servers Print servers      – Mirrors server writes to RecoverPoint appliance
                                                           – Resides on host or in fabric
                                              
                                                         RecoverPoint appliance
                                                           – Managed and prioritizes resources
                                                          – Writes changes to CDP Journal
                                                           – Distributes changes to target
                           SAN
                                                         Journal
                                                           –   Tracks all data changes to every protected LUN
                   EMC     EMC                             –   Utilizes bookmarks for application-aware recovery
                                                           –   Repository for live data updates
                     Disk        Local CDP
                   systems        Journal                  –   Provisioned from existing SAN LUNs
                                                         –   Dynamically compressed, which saves storage

                                                         Supports heterogeneous environments
                                                           – Works with EMC Symmetrix & CLARiiON storage
                                                           – Fabric splitters support Brocade SAS and Cisco SANTap




EMC CONFIDENTIAL—INTERNAL USE ONLY                                                                                   71
EMC RecoverPoint overview


                                     2a. Host splitter                1. Data is ―split‖ and sent to
                                                                         the RecoverPoint appliance
                                                                         in one of two ways


                                                                                        3. Writes are acknowledged
                   2b. Intelligent                                                         back from the RecoverPoint
                       fabric splitter                                                     appliance



                                                                                                 4. The appliance writes data to
                                                                                                    the Journal volume, along with
                                                                                                    time stamp and application-
                                                                                                    specific bookmarks




                                     /A           /C             rA           rC
                                           /B                           rB
                               Production volumes                Replica volumes     Journal volume


                                                         5. Write-order-consistent data is
                                                            distributed to the replica volumes



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NetWorker and RecoverPoint



Through integration of NetWorker,
  PowerSnap and NetWorker
  application modules, application
  consistent backup recovery is
  employed with RecoverPoint.
       – Snapshots appear as savesets in
         NetWorker Management Console and
         command line utilities
       – Normal PowerSnap operations such as
         instant backup, rollover, instant recovery,
         file by file recovery, and rollback are all
         supported.




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Storage Array Support (EMC Hardware)


 Symmetrix
       – Improved SRDF/S support
               Additional support for synchronous rollback from R2 to R1
               Concurrent, STAR, and Adaptive Copy not yet supported

 CLARiiON
       – SnapView Clone support
               Use clones for backup and recovery just like SnapView snaps
       – Rollback support
               Allow CLARiiON to restore data from snapshot or clone to source disk
       – Secure Navisphere usage
               Take advantage of security features of secure Navisphere client software

 More platform, OS support for both
       – see compatibility guide(s)




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OS & Platform Support




                                            New !

                                                    N/A
                                                          N/A
                                     N/A   N/A      N/A   N/A


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Application Support


                          Solaris      AIX         HP/UX      Windows       Windows
                                                              32 bit        64 bit
                                                              Oracle,
                          Oracle,     Oracle,     Oracle,     SAP,
                          SAP,        SAP,        SAP,        SQL,
   Symmetrix              Filesystems Filesystems Filesystems Filesystems   Filesystems
                                                              Oracle,
                          Oracle,     Oracle,                 SAP,
                          SAP,        SAP,                    SQL,
   CLARiiON               Filesystems Filesystems      N/A    Filesystems   Filesystems
                          Oracle,     Oracle,     Oracle,
                          SAP,        SAP,        SAP,
   Celerra/NAS            Filesystems Filesystems Filesystems Filesystems       N/A

                                                              SQL,
   RecoverPoint                  N/A         N/A      N/A     Filesystems       N/A




EMC CONFIDENTIAL—INTERNAL USE ONLY                                                        76
         NetWorker Direct SCSI Backup For Symmetrix




EMC CONFIDENTIAL—INTERNAL USE ONLY                    77
Advanced Raw Backup for EMC Symmetrix


  Direct SCSI backup feature provides
   advanced raw backup of Symmetrix
   volumes
  Protects unsupported file systems and
                                           000182
   applications                            504581/
                                             07D

  Backup and recover over SAN from a
   proxy Storage Node
  Management from NetWorker
   Management Console
  Command line recovery




EMC CONFIDENTIAL—INTERNAL USE ONLY                   78
                            NetWorker Integration With Celerra




EMC CONFIDENTIAL—INTERNAL USE ONLY                               79
EMC Disk Sharing Solution


                                                               NetWorker
 Share disk targets with multiple Storage Nodes             Storage Nodes
  using Celerra and Multi-Path File System
  (MPFS)
      – NAS target sharing enables easy setup
      – Data transport via SAN delivers best performance

 Horizontally scaleable - Capacity and
                                                           SAN   MPFS      NAS
  bandwidth easily increase by adding disk and
  Storage Nodes as backup needs grow



                                                                 Storage




EMC CONFIDENTIAL—INTERNAL USE ONLY                                               80
EMC Celerra Multi-Path File System (MPFS)


NAS Request and SAN Delivery
 Servers connect to storage
  network                                                     IP
                                                            network
 Servers connect to an out-of-band     NAS
  “metadata” controller (Celerra)     request

 Servers send file requests to                                         Servers
  Celerra via IP
                                                              SAN
 Data access is done directly via                           iSCSI/
  SAN (Fibre Channel or iSCSI)                                Fibre
                                                            Channel
 One Celerra can scale to
  thousands of application nodes                Celerra
                                                 NSX                         SAN
                                                                            delivery



                                                           Symmetrix
                                                          or CLARiiON

EMC CONFIDENTIAL—INTERNAL USE ONLY                                                     81
Performance example…




EMC CONFIDENTIAL—INTERNAL USE ONLY   82
NDMP Volume Backup


                                                     NDMP
                                                               EMC NetWorker
                                                     Client

                                                     Network


            Tape                                     NDMP

                                                                     New Backup Type
                                       PAX                     VBB
                                     (tar or dump)




EMC CONFIDENTIAL—INTERNAL USE ONLY                                                     83
 NDMP Volume Backup


 Flow of the Volume Backup
     –   Metadata first
     –   Transfers used block from volume level
     –   Data blocks then sequentially accessed and adjacent small blocks are merged into big reads
     –   Better data block read

 Good for environments with a lot of small files and directories




      PFS



         Metadata
         Block Data

 EMC CONFIDENTIAL—INTERNAL USE ONLY                                                                   84
Volume Backup Types of Restores


Volume Backup offers two types of restores:
       – Volume Backup full destructive restore
       – Volume Backup file restore




EMC CONFIDENTIAL—INTERNAL USE ONLY                85
Volume Backup Full Destructive Restore



     First the user needs to mount the file system as a „raw‟ file system
      (equal size)
     Read data blocks from tape and write directly to specified volume
       – Ensures best possible data block write performance

     Convert to „uxfs‟ when done
     Example: Restoring from a total file system failure




                                                                    raw fs
                                                                    uxfsfs

                                                              Reading Data Blocks

EMC CONFIDENTIAL—INTERNAL USE ONLY                                                  86
Volume Backup File Restore


      Volume Backup offers a second method of restoring data, standard file
       restore
      As with PAX, file restore is supported
        –    Metadata is retrieved from tape
        –    Selected files are created
        –    Data is written to files
        –    File attributes are set




EMC CONFIDENTIAL—INTERNAL USE ONLY                                             87
Specifying Volume Backup


Volume Backup can be enabled on NDMP clients in two
different ways.
      Setting „vbb‟ as the backup type; in EMC NetWorker, this means using the
       command line „nsrndmp_save –Type vbb‟ instead of „-Type tar‟ or dump
      Setting the environment variable vbb to y


                                                                            VBB=Y




                                                           OR
                             nsrndmp_save –T vbb



EMC CONFIDENTIAL—INTERNAL USE ONLY                                                  88
VBB Backup Requirements


VBB has several requirements for a backup to run correctly
      The file system must be read-only, using any of the following:
        –     Use an existing checkpoint
        –     Mount the file system as read-only
        –     Use the Backup With Integrated Checkpoints feature

      VBB must back up the entire file system; backing up only a
       subdirectory is not supported




EMC CONFIDENTIAL—INTERNAL USE ONLY                                      89
Using SnapSure


 May be used to supplement current backup strategy
       – Hourly SnapSure checkpoints
               Checkpoints may be used to restore part/ whole file systems
               File Undelete
       – Schedule to run daily, weekly, monthly (or any combination)

 May be used to eliminate “fuzzy” backups
       – When files that are opened during a backup, you don‟t know if the files were backed
         up or not

 To Enable with NetWorker add SNAPSURE=y to the application
  information window.




                         PFS                                                  ckpt


EMC CONFIDENTIAL—INTERNAL USE ONLY                                                             90
NDMP Backup Solution in Motion


                                                                    Tape
                                                                   Library
NDMP Client


                                     Celerra
                                               FC / SCSI


           Production
            Network
                                      Data
                                      Mover

                                                                ckpt


                                                                PFS
        NDMP Control Data
        Backup Data
                                                           Symmetrix / CLARiiON
EMC CONFIDENTIAL—INTERNAL USE ONLY                                                91
Celerra NDMP2D


 NDMP is fooled into thinking the disks
  are a TLU
 File-system-based storage sub-
  system
       – Emulates SCSI TLUs and tape drives

 TLU-related state information & the
  emulation for various TLU elements
  are done in files
 Emulates 3 separate concepts:
       – Robot
       – Tape drive
       – Cartridge (unique barcode)




EMC CONFIDENTIAL—INTERNAL USE ONLY            92
                                     NetWorker and EDL




EMC CONFIDENTIAL—INTERNAL USE ONLY                       93
 Use Case: Tape Cloning

                                                                    Backup
EDL/NetWorker Media-Management Feature                              Server

 How Does It Work?
   Data is backed up to virtual tape (barcode #VT101); 90-
    day retention
   NetWorker issues clone command to CDL
                                                                        
   CDL with Storage Node copies/moves tape (VT101) to
    physical tape (#PT202);       360-day retention period
                                                                     SAN
                                                                                            
 How Did It Work Before?
   Data was backed up to virtual tape (barcode #VT101);                                           Tape
    90-day retention
   Backup application “ejected”                                                    EMC
    virtual tape VT101
                                                                                 Disk Library
   VTL application moved tape VT101 to physical library;
    same barcode and retention period
                                                            Benefits
                                                              • Improves media tracking—ability to mix and
                                                                match barcodes with retention periods
                                                              • Ability to migrate older data to lower-cost
                                                                storage
                                                              • Full backup application control and tracking
 EMC CONFIDENTIAL—INTERNAL USE ONLY                                                                        94
                                                                                                            94
 Use Case: Tape Stacking

                                                                   Backup
EDL/NetWorker Media-Management Feature                             Server

 How Does It Work?
   Data is backed up to six small virtual tapes
   NetWorker issues clone command to CDL                              
   NetWorker moves the six small virtual tapes to one
    large physical tape
                                                                    SAN
 How Did It Work Before?                                                                   
   Data was backed up to six small virtual tapes
   NetWorker “ejected” virtual tape #VT101                                                       Tape
   VTL application moved the six small virtual tapes to six
    small physical tapes                                                           EMC
                                                                                Disk Library



                                                               Benefits
                                                                • Improve utilization of tape assets
                                                                • Higher-density tapes for faster restores
                                                                • Full backup-application tracking
EMC CONFIDENTIAL—INTERNAL USE ONLY                                                                           95
                                                                                                              95
 Use Case: Offsite

                                                           Backup
EDL/NetWorker Media-Management Feature                     Server

 How Does It Work?
   Data is backed up to virtual tape (barcode # VT101);
    90-day retention
   NetWorker issues clone command to CDL “A”
                                                             
   CDL with Storage Node copies/moves Tape VT101 to
    CDL “B”
                                                           SAN
   NetWorker copies/moves tape (VT101) to physical
    tape (#PT202); 360-day retention period
                                                                                     
                                                                                            Tape
 How Did It Work Before?
   Data was backed up to virtual tape (barcode #VT101)             EMC Disk EMC Disk
   VTL application issued copy/move command                        Library A Library B
   VTL application moved/copied tape from VT101 to
    VTL A
                                                           Benefits
                                                            • Enhance control over disaster-
                                                              recovery/archiving sites
                                                            • Improve data security by eliminating
                                                              physical tape transport
                                                            • Full backup-application tracking
 EMC CONFIDENTIAL—INTERNAL USE ONLY                                                                  96
                                                                                                      96
 Use Case: Restore
                                                                      Backup
EDL/NetWorker Media-Management Feature                                Server

 How Does It Work?
      NetWorker shows the location of virtual or physical tape
      NetWorker issues a restore command to CDL or physical
       library
      Restore occurs from either the CDL or physical tape library

                                                                       SAN
 How Did It Work Before?
      NetWorker showed the tape was located (ejected) outside
       the physical library                                                                           Tape
      Required tape (virtual or physical) was found inside the
       VTL application or through an offline process
      Restore occurred from either the CLARiiON Disk Library or
                                                                                      EMC
       physical tape library via Pass-Through mode                                 Disk Library


                                                                     Benefits
                                                                      • 100% of the tape pool managed by
                                                                        NetWorker
                                                                      • Improves audit trail of all tape assets
                                                                      • Saves time looking for tapes,
                                                                        resulting in faster restores
EMC CONFIDENTIAL—INTERNAL USE ONLY                                                                                97
                                                                                                                   97
EMC CONFIDENTIAL—INTERNAL USE ONLY   98

				
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