SNIA best of 2009 rev 7.pptx

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SNIA best of 2009 rev 7.pptx Powered By Docstoc
					The latest from SNIA in 2009

           Per Sedihn
 Vice Chair SNIA Europe Nordics
      CTO Proact IT Group
Connecting People, Storage
and Information



                         SNIA Mission
      SNIA storage
Lead theTech Center, US industry worldwide in developing
       Colorado Springs, CO, USA
                                      SNIA Technology Center
                                                       Tsinghua University, Beijing, PRC

    and promoting standards, technologies, Technology Center SNIA
                                                                                           Tokyo University, Japan


       and educational services to empower
 organizations in the management of information
                                   Over 7,000+ Active Members
                                    Some 400 Organizations
                                             Vendors
                                            End Users
                                     Channel and Services

                           Over 10,000 IT professionals Educated
                       Over 1,400 Certified Professionals Earning Over
                                    3,000 Certifications
SNIA Organization Chart
SNIA Organization Chart
Agenda




 SNIA storage standards
 100 year archive
 Solid state disk
 Green storage




                          4
SNIA Storage Standards


  Storage Management Initiative-Specification (SMI-S)
  Common RAID Disk Data Format (DDF)
  iSCSI Management API (iMA)
  Multipath Management API (MMA)
  eXtensible Access Method (XAM)
  Self-Contained Information Retention Format (SIRF)




                                                        5
Standard Access Method for Information


 FEATURES                                           XAM – eXtensible Access Method
 • Data independent of the application
   and application independent of the
   storage
 • Standard method for accessing data
   (structured, unstructured & semi-
   structured) in object repositories that
   include data and metadata
 • Allow data movement based on Policy
   without regard to storage
 • Allow Information Mgmt
   interoperability across storage
   infrastructure


Timeline:
• Version #1 Specification Public Review Q207
• Early XAM product demos (vender specific) at SNW Q307
• XAM Compliant product demonstrations at SNW Q208
                                                                                      6

                                                                             October, 2007
SIRF Logical container format




                                7
8
Abstract



Solving the Coming Archive Crisis
  The volume of digital information being kept online and accessible
  for long-term is overwhelming and leading to a crisis of cost and
  complexity resulting in great potential for data loss. New methods
  and practices are required to deal with the avalanche. This
  presentation will discuss the following:
     Best practices for long term digital information retention based on
     the work of the 100 Year Archive Task Force

     New technologies you can deploy that will help such as ILM, de-
     duplication, and CAS

     Future technologies and solutions that we can expect


                                                                           10

                                                                   October, 2007
Preservation is Complex


 Technology Challenges                Operations Challenges
  Maintaining physical readability      Collaboration on and setting
  Maintaining logical readability       requirements
  Migration of large repositories       Classification
  Emulation of formats                  Establishing adequate Metadata
  Maintenance of historical readers     Standardizing practices
  and applications                      Finding value in the archives
  Protection from change                Professional recognition
  Protection from loss or damage
  Physical & logical security
  Automation
  Deletion & disposition
  Search – discovery
  Testing/auditing
                                                                    11
Vision and Direction


  Long-Term Retention Reference         Logical Migration
  Model                                    SD-SCDF: self-describing, self-
     Best Practices for Storage            contained data format standard
     Requirements (done)                   a container based on OAIS1
     Glossary (in review)                  Archival Information Package
                                           integrated with XAM
  Physical Migration                            Through XAM, applications can
                                                write archival formats
     A virtualized, federated                   containing metadata,
     information repository in which            authentication information,
     self-healing eliminates need for           source data, and a reader.
     special physical migration                 XAM encourages application
     projects                                   support
       Add all required services
       (de-duplication, hash-based          1. OAIS: Open Archival Information System
       unique naming, location
       independence, encryption …)
     Meta-data provided thru XAM
                                                                                        12
                                                                                            12
                                                                                October, 2007
Solid State Disk Overview


  What is a Solid State Disk?
  Flash and DDR Memory Characteristics
  Why Solid State Disk?
  SSD Killer Applications
  SSD and ILM




                                         13
Green storage initiative




                           14
15
Who are the Culprits?
Green innovation
ILM/HSM
Data Footprint Reduction
Storage Optimization
Block Storage Optimization
Drive spin down, drive power
down and MAID
Potential paths to green




                           25
26
What is a Solid State Disk?




  “A solid state drive (SSD) is a semiconductor-based
  block storage device that behaves as a virtual HDD and
  appears to the host device as a disk drive.”
       Source: IDC, Worldwide Solid State Drive 2008–2012 Forecast and Analysis: Entering the No-Spin
       Zone , Doc #212736, June 2008.




                                                                                                        27
What is a Solid State Disk?


  Flash Memory Based
    Same class of memory used in consumer electronics
    Inherently non-volatile
    Best known for ruggedness and good random read
    performance.
  DDR Memory Based
    Same memory used in enterprise servers
    Requires batteries and backup hard disks for non-volatility
    Best known for outstanding performance and high cost.
  Cached Flash
    Mix of DDR RAM and NAND Flash.

                                                                  28
Flash Memory Characteristics

  Two types of NAND Flash Memory
    SLC – single layer
       100,000 writes per cell
       Primarily used in industrial and military applications
       Higher cost
       1.5 millisecond erase times; 200 microsecond write times; 25
       microsecond read times
       Maximum density – 16Gbit with 32Gbit on the way
       SLC memory is best suited for the enterprise
    MLC – multi layer
       10,000 writes per cell
       Primarily used in consumer electronics
       Lower cost
       Half the performance of SLC
       Maximum density – 32Gbit with 64Gbit on the way.
  Expect mixed SLC – MLC flash SSDs in the near future.
                                                                      29
Flash Memory Characteristics


  The process to write data to flash follows these steps:
     Determine “block” to update. NAND flash is typically divided into
     128KB blocks and further subdivided into 2KB pages.
     Copy data from the existing “block” (if necessary)
     Erase the “block” and reset cell to all “1’s”
     Rewrite the “block”, only 0’s can be written to a flash cell.




                                                                         30
DDR RAM Characteristics


  Unlimited writes per cell
  Primarily used as computer memory
  Higher cost and lower density than NAND flash
  Inherently volatile
  Highly reliable chip design
  10-15 nanoseconds read and write times
  Maximum density 1Gbit (2Gbit is being sampled)
  DDR RAM is well suited for the enterprise.




                                                   31
What is a Solid State Disk?

  1.8”     2.5”     3.5”       JBOD        Rack Mount




 Flash    Flash   DDR/Flash   DDR/Flash     DDR/Flash
 SATA     SATA     SATA        SCSI        SCSI
 IDE      IDE      SCSI        Fibre       Fibre
                   Fibre      Channel     Channel
                  Channel     SAS          InfiniBand
                                           SAS



                                                        32
Why Solid State Disks?
Latency Matters




                    “Money can buy bandwidth, but latency is
                     forever”

                     John R. Mashey, Chief Scientist SGI,
                     “Big Data and the Next Wave of InfraStress”, USENIX, 1999




                                                                                 33
Why Solid State Disks?
Little Change in HDD RPM


  1956 RAMAC
    the first disk drive
    5 MB storage
    1,200 RPM
  2007 SCSI Hard Drive
    400 GB storage
    15,000 RPM
  From 1956 to 2007:
    12.5 times increase in RPM
    80,000 times increase in capacity




                                        34
Why Solid State Disks?
Random I/O’s


                Random I/O's Per Second
                       (assumes a cache-miss)

                                            400 000
             400 000
             300 000
     I/Os
      Per    200 000
    Second
                                                      Read
                              100 000
             100 000                                  Write
                          200       20 000
                  0
                         HDD       Flash        DDR
                                                RAM


                                                              35
Flash SSD vs. HDD
Performance
• Be careful about performance assumptions when dealing with asymmetrical
read and write performance

                                                      SSD B vs 15k rpm HDD

                          20000

                          18000

                          16000

                          14000
          512 Byte IOPS




                          12000
                                                                                                  SSD B
                          10000
                                                                                                  15k HDD
                          8000

                          6000

                          4000

                          2000

                             0
                                  100 / 0   90 / 10     80 / 20     70 / 30   60 / 40   50 / 50
                                                         Read / Write mix




                                                                                                            36
Flash SSD vs. HDD
Performance

  SSD Sequential Performance MB/sec
                         Read         Write
  SSD A                    220         115
  SSD B                    130         120
  SSD C                     57          38
  SSD D                    100          80
  15K rpm HDD              171         171
  7.2K rpm HDD             105         105
  5.4K rpm HDD              61          61


                                              37
Why Solid State Disks?
Low Power




    Source: Achieving Energy Efficiency using Flash SSD, 2008,
    Greg Shultz, Storage IO Group.


                                                                 38
Real-world application
workloads




                         39
Summary


 SSD have a variety of technologies and form factors
 Lower SSD pricing has expanded the SSD market
 potential for higher performance storage tiers
 SSD performance characteristics vary widely
 Pick the SSD to match the application




                                                       40

				
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