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Veritas NetBackup 65 Snapshot Client Quick Start Guide - UNIX LINUX WIN

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Veritas NetBackup 65 Snapshot Client Quick Start Guide   - UNIX LINUX WIN Powered By Docstoc
					Veritas NetBackup™ Snapshot Client Quick Start Guide
UNIX, Windows, Linux

Release 6.5

12308350

Veritas NetBackup Quick Start Guide
Copyright © 2002 - 2007 Symantec Corporation. All rights reserved. NetBackup 6.5 Symantec, the Symantec logo, and NetBackup are trademarks or registered trademarks of Symantec Corporation or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners. Portions of this software are derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm. Copyright 1991-92, RSA Data Security, Inc. Created 1991. All rights reserved. The product described in this document is distributed under licenses restricting its use, copying, distribution, and decompilation/reverse engineering. No part of this document may be reproduced in any form by any means without prior written authorization of Symantec Corporation and its licensors, if any. THIS DOCUMENTATION IS PROVIDED “AS IS” AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID, SYMANTEC CORPORATION SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING, PERFORMANCE, OR USE OF THIS DOCUMENTATION. THE INFORMATION CONTAINED IN THIS DOCUMENTATION IS SUBJECT TO CHANGE WITHOUT NOTICE. The Licensed Software and Documentation are deemed to be “commercial computer software” and “commercial computer software documentation” as defined in FAR Sections 12.212 and DFARS Section 227.7202. Symantec Corporation
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 Cupertino, CA 95014
 www.symantec.com Printed in the United States of America.

Third-party legal notices
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Licensing and registration
Veritas NetBackup is a licensed product. See the NetBackup Installation Guide for license installation instructions.

Technical support
For technical assistance, visit http://entsupport.symantec.com and select phone or email support. Use the Knowledge Base search feature to access resources such as TechNotes, product alerts, software downloads, hardware compatibility lists, and our customer email notification service.

Contents

Chapter 1

Snapshot client features
Introduction ............................................................................................................ 7
 Snapshot selection ................................................................................................. 7
 Snapshot Policy Configuration wizard ............................................................... 8
 Terminology ........................................................................................................... 8
 Snapshot Client assistance ................................................................................... 9
 NetBackup for VMware ......................................................................................... 9


Chapter 2

Installation
UNIX .......................................................................................................................11
 Windows ................................................................................................................11
 Logging directories ..............................................................................................12
 Hardware configuration .....................................................................................12


Chapter 3

Configure a backup
Select Snapshot Client options ..........................................................................13
 Snapshot client dialog box overview ........................................................14
 Basic snapshot backup ................................................................................15
 FlashBackup ..................................................................................................16
 NAS snapshot ...............................................................................................17
 Instant recovery ...........................................................................................18
 Off-host backup ............................................................................................19
 Test Snapshot Client ...........................................................................................20
 Configuration matrix for backup types ............................................................21


Chapter 4 Appendix A

Frequently asked questions Data movers (UNIX clients only)
Test the network ..................................................................................................27
 Third-party copy configuration files ................................................................28
 Mover.conf file .............................................................................................29
 3pc.conf file ...................................................................................................29
 Diagram of third-party copy environment ......................................................31


6 Contents

Index

33

Chapter

1

Snapshot client features
Introduction
This guide provides first-time instructions for configuring NetBackup Snapshot Client.
 For detailed reference, refer to the NetBackup Snapshot Client Administrator ’s 
 Guide.
 In brief, Snapshot Client features include the following:
 Snapshot: a point-in-time disk version of the client’s data, for “hot” backups.
 NetBackup backs up the data from the snapshot, not directly from the client’s 
 data. Client operations can continue without interruption during the backup. 
 Snapshots are the basis for the other features of Snapshot Client.
 FlashBackup: combines the speed of raw-partition backups with the ability to 
 restore individual files from the raw partition or drive.
 Instant Recovery: makes backups available for quick recovery from a snapshot. 
 Instant Recovery provides three additional types of restore: block-level restore, 
 file promotion, and point-in-time rollback.
 Off-host backup: performs the backup processing on a separate backup agent, 
 greatly reducing the impact on the client’s resources ordinarily caused by a local 
 backup. The backup agent can be a data mover (NetBackup Media Server, 
 Third-Party Copy Device, or Network Attached Storage) or an alternate client.
 Block level incremental backup (BLI): backs up only changed data blocks of 
 Oracle and DB2 database files. 
 Refer to the NetBackup Oracle or DB2 guide for more details.


Snapshot selection

Snapshot Client has a range of snapshot methods for UNIX, Linux, and Windows clients. For most backups, NetBackup can select the snapshot method automatically. Or, you can select the snapshot method by using Snapshot Client

8 Snapshot client features Snapshot Policy Configuration wizard

Options on the policy dialog box. The snapshot methods are described in the NetBackup Snapshot Client Administrator’s Guide.

Snapshot Policy Configuration wizard
To set up a Snapshot Client policy and select a snapshot method, you can use the Snapshot Policy Configuration wizard in the Administration Console.

Terminology
Snapshot Client

An add-on product that includes snapshot backup, FlashBackup, Instant Recovery, off-host backup, and block-level incremental backup.
Copy-on-write (COW)

One of two types of snapshots (see also mirror). A copy-on-write snapshot creates a block-by-block “account” that describes the following, from the instant the copy-on-write is activated: the blocks in the client data that changed and the blocks that did not change. NetBackup uses this information to create the backup copy. Other terms and trade names sometimes used for copy-on-write snapshots are space-optimized snapshots, space-efficient snapshots, and checkpoints.
Data mover

The device that manages an off-host backup on behalf of the client (see off-host backup).
Mirror

A disk that maintains an exact copy of another disk. All data that is written to the original disk is also written to the mirror. Other terms and trade names sometimes used for mirror are full volume mirror, split-mirror, BCV (EMC), and third mirror break-off.
NetBackup Media Server method

An off-host backup method in which a media server performs data movement.
Off-host backup

The off-loading of the backup processing to a separate backup agent that executes on another host. Snapshot Client provides the following off-host backup options: alternate client backup, NetBackup Media Server, Network Attached Storage, Third-Party Copy Device, and virtual machine proxy.
Snapshot

A stable point-in-time version of the client’s data before backup. A snapshot makes possible a “hot” backup, which minimizes system downtime.

Snapshot client features Snapshot Client assistance

9

Snapshot method

A set of routines for creating a snapshot. You can select the method, or let NetBackup select it when the backup is started (auto method).
Snapshot mirror (VxVM)

A disk mirror created by the Veritas Volume Manager (VxVM). The snapshot mirror is an exact copy of a primary volume at a particular moment, reproduced on a physically separate device.
Third-Party Copy Device

An off-host method that makes the backup by means of a data mover on the SAN, using the SCSI Extended Copy command. Third-party copy device also refers to the data mover itself, often implemented as part of a bridge, router, or storage device.

Snapshot Client assistance
From the NetBackup Administration Console
For help on how to create a policy with Snapshot Client features, click the master server name at the top of the left pane. Then click Create a Snapshot Backup Policy.

From the Web
For a document that contains additional Snapshot Client assistance, go to www.symantec.com/enterprise/support/all_products.jsp. Select NetBackup Enterprise Server, then Knowledge Base. Ensure that PDFs is checked, and enter 288300 in the document ID field. The title of the document is Veritas NetBackup (tm) 6.5 Snapshot Client Configuration.

NetBackup for VMware
NetBackup can back up and restore Windows and Linux VMware virtual machines (guest operating systems). For Windows virtual machines, NetBackup also uses FlashBackup to enable individual file restore from a full virtual machine (vmdk-level) backup. For assistance with NetBackup for VMware, see the NetBackup for VMware Configuration online document, at:
http://entsupport.symantec.com/docs/289771


10 Snapshot client features NetBackup for VMware

Chapter

2

Installation
UNIX
This procedure applies to the Solaris (SPARC), HP-UX, AIX, and Linux platforms. 1	 To back up VxFS or VxVM configured clients, or clients in a clustered environment, make sure the file systems, volumes, and/or clustering are correctly configured. For software requirements, refer to “Features and Required Software” in the NetBackup Snapshot Client Administrator’s Guide. Install the NetBackup 6.5 Enterprise server and client software. See the NetBackup Installation Guide for UNIX. From the NetBackup options CD-ROM, use the NetBackup Add-On Product Software menu to install Snapshot Client on the master and the media server(s). Distribute Snapshot Client software to all currently defined clients by entering the following command:
/usr/openv/netbackup/bin/update_clients -Install_SNC


2	 3	

4	

For complete instructions, see the installation chapter of the NetBackup Snapshot Client Administrator’s Guide.

Windows
Snapshot Client is automatically installed with the Windows NetBackup Enterprise server and client software. The installation procedure is the same as that described in the NetBackup Installation Guide for Windows.
■	

To back up VxVM configured clients or clients in a clustered environment, make sure the VxVM volumes and clustering are correctly configured.

12 Installation Logging directories

■	

For Instant Recovery backups of data that is configured on VxVM volumes on Windows, ensure that VxVM volume names contain no more than 12 characters. Provide the Snapshot Client license key as required during the installation.

■	

Logging directories
Create logging directories by running the following: UNIX
/usr/openv/netbackup/logs/mklogdir


Windows
install_path\NetBackup\logs\mklogdir.bat


Hardware configuration
Verify the functionality of your network equipment and storage devices: disk arrays, robots, tape drives, switches, hubs, host-bus adapters, routers, and third-party copy devices.
■	

For assistance with disk array configuration, refer to the disk array configuration chapters in the NetBackup Snapshot Client Administrator’s Guide. Install the proper versions of all required firmware and device drivers. For a list of supported platforms, and for configuration help with particular devices, see “Snapshot Client assistance” on page 9. For NetBackup Media Server or Third-Party Copy off-host backup: to verify NetBackup access to your SAN devices, to configure HBA drivers, and to create NetBackup configuration files, see the NetBackup Snapshot Client Configuration document. See “Snapshot Client assistance” on page 9.

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■	

Chapter

3

Configure a backup
Select Snapshot Client options
Most Snapshot Client options are selected from the policy Attributes tab:

Select policy type and other attributes Select Snapshot Client options

14 Configure a backup Select Snapshot Client options

Snapshot client dialog box overview

Perform block level incremental backups For backups of Oracle and DB2 database clients only. This option requires NetBackup database agent software. Perform snapshot backups The backup is made from a snapshot image of the client data. Note: If Bare Metal Restore is installed, you must deselect Collect disaster recovery information for Bare Metal Restore to select Perform snapshot backups. Retain snapshots for Instant Recovery Enables the instant recovery of this backup. Perform off-host backup Shifts the burden of the backup process to another host or device on the network. Snapshot Client Options For optional selection of the snapshot method. Can be set to auto, which means NetBackup chooses the method. Note: For help with these options, see the following sections in this chapter. 
 Read “Basic snapshot backup” on page 15 before you read the other sections.


Configure a backup Select Snapshot Client options

15

Basic snapshot backup
This procedure highlights Snapshot Client-related options. To create a policy for a snapshot backup: 1	 Select the policy type. MS-Windows-NT: for Windows 2000 or 2003 clients. Standard: for UNIX clients: Solaris (SPARC), HP-UX, AIX, Linux. DB2: for DB2 clients (requires NetBackup DB2 database agent software). MS-Exchange: for MS-Exchange clients (requires NetBackup MS-Exchange database agent software). MS-SQL-Server: for MS-SQL-Server clients (requires NetBackup MS-SQL-Server database agent software). Oracle: for Oracle clients (requires NetBackup Oracle database agent software). FlashBackup: for UNIX clients. FlashBackup-Windows: for Windows 2000 or 2003 clients. See “FlashBackup” on page 16. Click Perform snapshot backups. NetBackup selects an appropriate snapshot method when the backup starts. To select the snapshot method yourself, click Snapshot Client Options. The snapshot method is used for all clients in the policy. For example, if you select nbu_snap, all clients in the policy must be Solaris: the nbu_snap snapshot method can make snapshots on Solaris clients only. Configure the rest of the policy (other attributes, schedule, backup selections, clients). The ALL_LOCAL_DRIVES entry is not supported in the Backup Selections list of a Snapshot Client policy, except for VMware backup. See “NetBackup for VMware” on page 9.

2	

3	

16 Configure a backup Select Snapshot Client options

FlashBackup
To create a policy for FlashBackup: 1	 Select FlashBackup as the policy type for UNIX clients, or FlashBackup-Windows for Windows clients. Perform snapshot backups must be selected. In the Backup Selections tab: specify the drive letter or mounted volume (Windows) or the raw disk partition (UNIX) that contains the files to back up. Windows examples:
\\.\E:
 \\.\E:\mounted_volume


2	

Note: The drive must be designated exactly as shown in the examples. FlashBackup does not support a backup of the drive that contains the Windows system files (usually the C drive). Solaris examples:
/dev/rdsk/c1t0d0s6
 /dev/vx/rdsk/volgrp1/vol1


HP-UX examples:
/dev/rdsk/c1t0d0
 /dev/vx/rdsk/volgrp1/vol1


Note:
■	

FlashBackup-Windows policies do not support Windows system-protected files (the System State, such as the Active Directory and the Registry). If you use the FlashBackup-Windows policy type and the VSP snapshot method, click Host Properties > Clients. Select the client and then click Actions > Properties, Windows Client > VSP to specify VSP settings for the client. UNIX clients: some snapshot methods require extra disk space for cache. The cache must be a raw partition, which is designated in either of two ways:
■	

■	

■	

Click Host Properties > Clients. Select the client and click Actions > Properties, UNIX Client > Client Settings. Specify the default cache for the client. Or, click Snapshot Client Options on the policy dialog box. Select nbu_snap (Solaris clients only) or VxFS_Snapshot as the method and specify the cache device path.

■	

Configure a backup Select Snapshot Client options

17

NAS snapshot
1	 Select Standard as the policy type for UNIX clients. Select MS-Windows-NT for Windows clients or Oracle for UNIX clients that are configured in an Oracle database. Select Perform snapshot backups and Retain snapshots for instant recovery. For Storage unit, select Any_available. For SnapVault, a special disk storage unit must be defined. See the NetBackup Snapshot Client Administrator’s Guide for SnapVault instructions. Select Perform off-host backup and Use data mover. For Use data mover, pick Network Attached Storage. On the Schedule Attributes tab, select Snapshots only. On the Backup Selections tab, specify the mounted file system (UNIX) or share name (Windows) from the client perspective. For example:
■	

2	 3	

4	 5	 6	

On UNIX, if the data resides in /vol/vol1 on the NDMP host and is NFS mounted to /mnt2/home on the UNIX client, specify /mnt2/home. On Windows, if the data resides in /vol/vol1 on the NDMP host and is CIFS mounted (mapped to) \\nas1\vol\vol1 on the Windows client, specify \\nas1\vol\vol1. For SnapVault: specify subvolumes (qtrees in Network Appliance Data ONTAP), not volumes.

■	

■	

Note:
■	

Both NetBackup for NDMP and Snapshot Client software must be installed and licensed on the NetBackup server. The client data must reside on an NDMP host and be mounted on the client by means of NFS on UNIX or CIFS on Windows. Do not auto-mount the data; it must be hard (or manually) mounted. For detailed configuration requirements, see the NAS chapter of the NetBackup Snapshot Client Administrator’s Guide. For a list of supported NAS vendors for NAS snapshots and SnapVault, refer to the NetBackup Snapshot Client Configuration online document. For access instructions, see “Snapshot Client assistance” on page 9.

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■	

■	

18 Configure a backup Select Snapshot Client options

Instant recovery
To create a policy for a backup that enables instant recovery: 1	 2	 Select Perform snapshot backups and Retain snapshots for instant recovery on the policy Attributes tab. To skip the backup to tape or to other storage unit, select Snapshots only on the Schedule Attributes tab. To make a snapshot of data on a NAS host, Snapshots only must be selected.

Only a snapshot is created. (No backup to tape or other storage unit.)

Configure a backup Select Snapshot Client options

19

Off-host backup
To shift the backup process to another host or device, do the following: 1	 2	 Select Perform snapshot backups and Perform off-host backup on the policy Attributes dialog box. For a backup that an alternate client performs, click Use alternate client. Then enter the name of the alternate client. See the NetBackup Snapshot Client Administrator’s Guide for details. To make the backup by means of a data mover, click Use data mover and choose one of the following: NetBackup Media Server A Solaris, HP, AIX, or Linux NetBackup media server handles the backup process (for Solaris, HP, AIX, and Linux clients only). Third-Party Copy Device A third-party copy device handles the backup process (for Solaris, HP, AIX, and Linux clients only). This option may require additional configuration. See “Third-party copy configuration files” on page 28. Network Attached Storage A NAS (Network Attached Storage) host performs the backup by using the 
 NAS_Snapshot method. 
 See “NAS snapshot” on page 17 for policy configuration.
 To back up a VMware virtual machine, click Use virtual machine proxy. For assistance with NetBackup for VMware, see the NetBackup for VMware Configuration online document, at:
http://entsupport.symantec.com/docs/289771


3	

4	

Note:
■	

For requirements regarding alternate client backup, see the NetBackup Snapshot Client Administrator’s Guide. For NetBackup Media Server and Third-Party Copy Device, the Any_available storage unit type is not supported. Specify a particular storage unit or group of storage units. For third-party copy device, you must create a mover.conf file. See the “Data movers (UNIX clients only)” appendix for further restrictions.

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20 Configure a backup Test Snapshot Client

Test Snapshot Client

1	 2	 3	 Make sure a standard backup works properly (policy that is configured without Snapshot Client features). Try a backup using the same policy but configured for snapshot backups. See “Basic snapshot backup” on page 15. Try other Snapshot Client features. Run a backup after each is added to the policy.
■	

For off-host backup, try the Use alternate client method first.

4	

UNIX clients only: for off-host backup using a data mover, try the NetBackup Media Server method first.

Note: The media server must be able to access the tape drive or other storage 
 device. 
 See “Off-host backup” on page 19 and the “Data movers (UNIX clients only)” 
 appendix.
 5	 UNIX clients only: for a data mover backup using the Third-Party Copy Device method, make sure the third-party copy device and other SAN/Fibre Channel devices are configured correctly.

Note: See the “Data movers (UNIX clients only)” appendix for assistance.

Configure a backup Configuration matrix for backup types

21

Configuration matrix for backup types

The following table shows the Snapshot Client requirements for local snapshot 
 backup, alternate client backup, and for data mover backup. Note that all 
 Snapshot Client backup methods require a snapshot.
 For a list of supported operating systems and SAN devices, see the NetBackup 
 Snapshot Client Configuration online pdf.
 See “Snapshot Client assistance” on page 9.
 Table 3-1 Snapshot Client requirements DATA MOVER Local Snapshot Alternate Client Software
■

Network NetBackup Media Attached Storage Server Software
■ ■

Third-Party Copy Device Software
■ ■ ■

Software
■ ■ ■

Software
NetBackup 6.5 Enterprise Snapshot Client a

NetBackup 6.5 Enterprise Snapshot Clienta

NetBackup 6.5 Enterprise Snapshot Clienta

NetBackup ■ 6.5 Enterprise Snapshot Clienta NetBackup for NDMP
■

NetBackup 6.5 Enterprise Snapshot Clienta Vendor-supplied data mover license

■

Hardware
No special requirements

OS/level on alternate client ■ must be same as on primary client

Hardware
■

Hardware
■

Hardware and Other

■

Other
ALL_LOCAL_ DRIVES in Backup Selections list not supported

See the “NAS Snapshot Configuration” ■ Preconfiguration chapter of the of disk array may NetBackup Snapshot Client be required.b Admini- strator’s Other Guide for configuration Same as Local details. Snapshot, plus: Can use auto, FlashSnap, VSS, VVR, or disk array snapshot methodsb

Client disk must be visible to alternate client

Client disk must be visible to media Hardware server and client Same as Media Server Client disk must method, plus: be SCSI or Fibre ■ Need supported Channel device third-party copy Client disk must support serialization or SCSI Inquiry Page Code 83b data mover

■

Other
Same as Media Server, plus:
■

Other
Same as Local Snapshot, plus: Any_available storage unit not supported

Must create mover.conf file (use bpmoverinfo) May need to edit 3pc.conf file. Multiplexing not supported

■ ■

a.NetBackup database agent software required when backing up database clients. b.See NetBackup Snapshot Client Administrator’s Guide for more information.

22 Configure a backup Configuration matrix for backup types

Chapter

4

Frequently asked questions
Q: Once I’ve installed Snapshot Client on the master server or the media server, how do I install that software on the NetBackup clients?
A: For UNIX clients, use the update_clients command from the UNIX master server. The following command updates all configured UNIX clients with Snapshot Client software once Snapshot Client has been installed on the master server:
/usr/openv/netbackup/bin/update_clients -Install_SNC


For Windows PCs, Snapshot Client software is automatically installed with the base NetBackup software, for server and clients. For more detail, see the installation chapter of the NetBackup Snapshot Client Administrator’s Guide.

Q: NetBackup already includes the VSP and the VSS snapshot providers. Why do I need Snapshot Client?
A: When you use VSP and VSS without Snapshot Client, they do not guarantee that the backup is based on a snapshot. For snapshot-based backups, including FlashBackup, Instant Recovery, off-host backup, or VMware backup, Snapshot Client is required.

Q: What license do I need for making a snapshot, when an off-host backup is not required?
A: Snapshot Client.

Q: What license do I need for making a snapshot of a database client?
A: Snapshot Client plus the NetBackup database agent software for your database.

24 Frequently asked questions

Q: What license do I need for making a snapshot of client data on an NDMP host (NAS filer)?
A: Both Snapshot Client and NetBackup for NDMP.

Q: Does Snapshot Client support the backup of raw partitions or luns?
A: Yes.

Q: Can I have a Solaris NetBackup master server and use an HP-UX, AIX, or Linux media server as a data mover?
A: Yes. And the converse is also supported.

Q: Do any of the snapshot methods support multiple data streams?
A: Yes. All snapshot methods support the creation of multiple data streams during backup. Configure these in the same way as for standard backups. Keep in mind that an XCOPY-based data mover (Third-Party Copy Device method) does not support multiplexing.

Q: How can I use a snapshot method to back up an unsupported database?
A: NetBackup has two Backup Selections directives that can be used with any snapshot method. These directives are: DB_BEGIN_BACKUP DB_END_BACKUP A script can be called out using these directives. The script specified by the DB_BEGIN_BACKUP directive is initiated before a snapshot is created. Once the snapshot has been created, the script specified by the DB_END_BACKUP directive is run even though the job is in progress. For example, these scripts could be used to quiesce an unsupported database, make the snapshot and then restart the database.

Q: What is device serialization and why do I need it?
A: Device serialization is the ability of a device (disk or tape drive) to return a serial number that uniquely identifies that device. NetBackup relies on device serialization when it runs the tape configuration wizard. Most disk drives also support serialization. Some disk arrays do not support it but do support identification descriptors.

Q: Where can I find more information that is related to OS and hardware support?
A: See “Snapshot Client assistance” on page 9 for instructions.

Frequently asked questions

25

Q: Does Snapshot Client support backup of Windows clients on disk arrays?
A: Yes. Snapshot Client uses the Volume Shadow Copy Service of Windows 2003 for local or alternate client backups of Windows 2003 clients. Instant Recovery is also supported. Client data is stored on a supported disk array or in a Veritas Storage Foundation for Windows 4.1 or later volume. This feature also supports file system backup of a disk partition (such as E:\) and backup of Exchange databases.

Q: What is the difference between the original disk array methods (TimeFinder, ShadowImage, BusinessCopy) and the new disk array methods introduced in NetBackup 6.5?
All the disk array methods in Snapshot Client are designed for particular disk arrays, and enable a variety of snapshot capabilities provided by the arrays.
■	

The new disk array methods support Instant Recovery. The original array methods (TimeFinder, ShadowImage, BusinessCopy) do not support Instant Recovery. The new disk array methods support clone and copy-on-write snapshot methods, in addition to full mirror methods (depending on the array). The original array methods support only mirrors.

■	

Q: Do I need an Hitachi, HP, SUN, or EMC array to make off-host backups?
A: No. Most Snapshot Client snapshot methods do not require these arrays. A simple storage array (JBOD) with no RAID controller can be used, such as when combined with Veritas Volume Manager.

Q: How does the SUN version of the Hitachi array differ from the Hitachi version?
A: From an operational standpoint the two arrays are exactly the same, including microcode.

Q: Can the array-specific snapshot methods be used either with or without off-host backup?
A: Yes. The array-specific snapshot methods are for making snapshots of disk arrays. Off-host backup is for shifting data movement tasks away from the client to a separate entity such as a media server. The array snapshot methods can be used with off-host backup or without it.

Q: Are the array-specific snapshot methods required for making off-host backups of supported disk arrays?
A: No. Depending on the file system or volume manager configuration of client data, any Snapshot Client snapshot method can be used for off-host backups of

26 Frequently asked questions

arrays. Refer to the disk array chapters in the NetBackup Snapshot Client Administrator ’s Guide for file systems and volumes supported for disk arrays.

Q: Do any off-host data movement methods support multiplexing?
A: Yes. The alternate client and NetBackup Media Server methods support multiplexing. The Third-Party Copy Device method does not, which is not a NetBackup restriction but a limitation of the XCOPY protocol.

Q: My configuration uses a third-party copy data mover that is built into a fibre Channel/SCSI router (bridge). Do the tape drives or storage arrays need to be connected directly to this router?
A: No. The only restriction is that in a SAN environment the router needs to be visible to the following: the NetBackup media server, the storage device being backed up, and the ultimate destination (such as the tape drive or the disk drive).

Q: How can I configure off-host backup with FlashBackup?
A: Install Snapshot Client, define the policy type as FlashBackup, and select the off-host method on the same policy Attributes tab.

Q: Should the mover.conf file be created in all off-host configurations?
A: No. The mover.conf file is only required for Third-Party Copy Device backups.

Q: When should I create the 3pc.conf file?
A: The 3pc.conf file is required for off-host backups using the NetBackup Media Server or Third-Party Copy Device method. NetBackup automatically creates this file. Under certain circumstances, you may have to edit the file when using the Third-Party Copy Device method See “Third-party copy configuration files” on page 28.

Appendix

A

Data movers (UNIX clients only)
This appendix explains how to prepare for backups that use the NetBackup Media Server or Third-Party Copy Device method. For assistance with the Network Attached Storage method, refer to the NetBackup Snapshot Client Administrator’s Guide. Note: The information in this appendix applies to backups of UNIX clients only.

Test the network
Do the following if you use a data mover for off-host backup of UNIX clients.

Verify the hardware
Devices must be connected to and visible from the appropriate systems. The data mover must be able to access the tape drive or other storage device.

Configure the hardware
Make sure that NetBackup can see the hardware: use the sgscan command
 (Solaris), ioscan -nf (HP-UX), or lsdev -C (AIX). This step is critical.
 For more detailed instructions, see the NetBackup Device Configuration Guide.


Create configuration files (Third-party copy device only) ■	 Create a /usr/openv/volmgr/database/mover.conf file on the
media server by entering:
/usr/openv/netbackup/bin/admincmd/bpmoverinfo


See “Mover.conf file” on page 29 for more details on this command.

28 Data movers (UNIX clients only) Third-party copy configuration files

■	

If a needed backup device does not provide an identification descriptor (E4 target), update the /usr/openv/volmgr/database/3pc.conf file with the world wide port name for that device. See “3pc.conf file” on page 29. Identification descriptors are listed in the 3pc.conf file beginning with i= followed by a long number. See “Example 3pc.conf” on page 30.

Test the basic configuration
Test the hardware configuration to make sure NetBackup communicates with all devices properly. Use robtest to test the robotic library. Try a standard (non-Snapshot Client) backup to test the tape libraries and communications with the client.

Configure and test Snapshot Client
Once standard backups work properly, set up a Snapshot Client policy and run an off-host backup using the NetBackup Media Server method. Then try the Third-Party Copy Device method, if applicable.

Third-party copy configuration files
This section explains how to set up configuration files for third-party copy data mover backups. Note: If not using the Third-Party Copy Device off-host method, skip this section. On the NetBackup media server:
■	

mover.conf identifies the third-party copy devices (data movers) that execute SCSI Extended Copy commands for the third-party copy backup. This file is easy to create. See “Mover.conf file” on page 29. 3pc.conf contains a list of all the disk and the tape devices on the SAN that NetBackup can use for off-host backups. NetBackup automatically creates this file at the start of the backup. If some devices do not provide identification descriptors and CommandCentral Storage (or SANPoint Control) does not support your environment, edit the 3pc.conf file. See “Example 3pc.conf” on page 30 for examples. See “3pc.conf file” on page 29.

■	

Data movers (UNIX clients only) Third-party copy configuration files

29

Mover.conf file
To create the /usr/openv/volmgr/database/mover.conf file, enter the following on the media server:
/usr/openv/netbackup/bin/admincmd/bpmoverinfo


This command discovers third-party copy devices (data movers) on the SAN and creates a mover.conf file with appropriate entries for each device.

Example mover.conf file:
/dev/rmt/1cbn
 /dev/sg/c6t1l0
 /dev/sg/c6t1l1
 /dev/sg/c6t1l2
 /dev/sg/c6t4l0


Each of the lines identifies a data mover.

Note:
■	

Before creating mover.conf, make sure all devices are visible. Some data movers are visible only if you run the following: On Solaris
sgscan basic


On HP
ioscan -nf


On AIX
lsdev -C

■	

Some devices may be listed in mover.conf that are not actual data movers. NetBackup automatically scans each device in mover.conf until it encounters a device that is an actual data mover. Additional mover.conf configuration information is located in the off-host data mover backup section of the NetBackup Snapshot Client Configuration online pdf. See “Snapshot Client assistance” on page 9.

■	

3pc.conf file
If some required backup devices do not provide identification descriptors (i=iddesc in the /usr/openv/volmgr/database/3pc.conf file), update the 3pc.conf file with world wide port names for those devices, as follows. 1	 Enter the following on the media server when no backups are in progress:
/usr/openv/netbackup/bin/bptpcinfo -a 


This command creates a /usr/openv/volmgr/database/3pc.conf file that identifies the following: the client disks on the SAN that can be backed

30 Data movers (UNIX clients only) Third-party copy configuration files

up and the robotic libraries and tape drives where NetBackup can store the data. 2	 To add world wide port numbers to the file, enter the following:
/usr/openv/netbackup/bin/admincmd/bpSALinfo -S SPC_server


The bpSALinfo command discovers world wide port numbers for the devices and adds them to the 3pc.conf file. The bpSALinfo command requires Veritas CommandCentral Storage (or SANPoint Control). SPC_server identifies the host where CommandCentral Storage/SANPoint Control is running. Note: If CommandCentral Storage or SANPoint Control does not support your environment, edit the 3pc.conf file manually. The procedure is described in the off-host data mover backup section of the NetBackup Snapshot Client Configuration online pdf. The following is an example /usr/openv/volmgr/database/3pc.conf file.

Example 3pc.conf
# devid [a=wwpn:lun] [c=client] [p=devpath] [P=clientpath] [s=sn] [l=lun] [w=wwpn] [W=wwpn] [i=iddesc] 0 p=/dev/rdsk/c0t0d0s2 s=FUJITSU:MAB3091SSUN9.0G:01K52665 l=0 1 p=/dev/rdsk/c0t10d0s2 s=FUJITSU:MAG3091LSUN9.0G:00446161 l=0 2 p=/dev/rdsk/c4t0d0s2 s=HP:OPEN-3:30436000000 l=0 a=500060E80276E401:0 3 p=/dev/rdsk/c4t3d1s2 s=HITACHI:OPEN-3-SUN:20461000300 l=1 i=10350060E800000000000004FED00000003 a=50060E80034FED00:1 4 p=/dev/rdsk/c4t1d0s2 s=HITACHI:OPEN-3-CM:20461000000 l=0 a=100000E00221C153:0 5 p=/dev/rdsk/c4t3d0s2 s=HITACHI:OPEN-9:60159003900 l=0 w=500060e802eaff12

world wide port name

identification descriptor

Please note:
■	

The identification descriptor (i=iddesc) designates a device on a SAN. Some vendors do not support the identification descriptor. For this descriptor, the device must support a page code inquiry with a type 2 or 3 descriptor of less than 20 bytes. The NetBackup bptpcinfo command detects the device’s identification descriptor and places it in the 3pc.conf file if the identification descriptor is available. Note: even when this descriptor is available, some third-party copy devices do not support its use. For a world wide name, use the world wide port name (WWPN), not the world wide node name (WWNN).

■	

Data movers (UNIX clients only) Diagram of third-party copy environment

31

■	

To determine the WWPN of a device, look in the /var/adm/messages file on Solaris, or log into the appropriate host-bus adapter or Fibre Channel switch. For configuration assistance, see the flowcharts in the off-host data mover backup section of the NetBackup Snapshot Client Configuration online pdf.

■	

Diagram of third-party copy environment
This diagram shows the Fibre Channel environment for Third-Party Copy Device backups using Snapshot Client.
Snapshot Client is installed on master server, media server, and clients NetBackup master server NetBackup media server NetBackup creates 3pc.conf.1 You create mover.conf2 LAN FC switch NetBackup client

Hardware array: May have an embedded data mover Fibre Channel SAN

Data mover with third-party copy engine

Disk array and tape library must be visible on SAN to data mover and client.

Tape library: May have an embedded data mover

1. See “Third-party copy configuration files” on page 28 for exceptions. 2. See “Mover.conf file” on page 29 (only needed for Third-Party Copy Device backups).

32 Data movers (UNIX clients only)
 Diagram of third-party copy environment


Index

Numerics
3pc configuration 27
 3pc.conf file 28, 29


F
FAQs 23
 features, overview 7
 Fibre Channel environment 31
 file promotion 7
 FlashBackup 7, 16
 device file name 16
 files to back up 16
 frequently asked questions 23


A
Active Directory 16
 and FlashBackup 16
 ALL_LOCAL_DRIVES 15, 21
 alternate client 19
 Any_available storage unit 19


H
hardware requirements 21
 hardware verification 27


B
Bare Metal Restore 14
 block level incremental backup (BLIB) 7, 14
 block-level restore 7
 bpmoverinfo command 27, 29
 bpSALinfo command 30
 bptpcinfo command 29, 30


I

identification descriptor 28, 29, 30
 -Install_SNC 11
 installation 11
 instant recovery 7
 backups to disk only 18
 configuration 18
 volume name restriction 12
 ioscan -nf 29


C
cache for FlashBackup 16
 CommandCentral Storage 28, 30
 configuration
 requirements matrix 21
 snapshot wizard 8, 9
 copy-on-write
 defined 8


L
logging directories 12
 lsdev -C 29


D
data mover 8, 27, 28
 license 21
 device file name for FlashBackup 16
 directories for troubleshooting 12
 drive letter for FlashBackup 16


M
mirror 8
 mover.conf file 19, 27, 28


N
NAS (Network Attached Storage) 19, 21, 24, 27
 configure policy for 17
 instant recovery option required 18
 off-host backup type 19
 nbu_snap snapshot method 16


E
E4 target 28
 Extended Copy command 9, 28


34 Index

NDMP (see NAS)
 NetBackup Media Server method 8, 19
 Network Attached Storage (see NAS)
 network testing 27


O
off-host backup 7, 8, 27
 configuration 19
 NAS 19, 21, 27


backup configuration 15
 mirror 9
 SnapVault 17
 software requirements 21
 storage unit 27
 support web site 9
 supported policy types 15
 System State 16
 and FlashBackup 16
 system-protected files and FlashBackup 16


P
Perform block level incremental backups 14
 Perform off-host backup 14, 19
 Perform snapshot backups 14, 15
 peripherals (latest info on web) 9
 point in time rollback 7
 policy
 configuration 13
 types supported 15
 promotion, file 7


T
terminology 8
 testing Snapshot Client 20, 28
 third-party copy
 device configuration 27
 third-party copy device 9, 19, 27, 28, 31
 troubleshooting
 directories to create 12


U
update_clients command 11
 Use alternate client 19
 Use alternate client feature 19


R
raw partition backup 16
 raw partition for FlashBackup cache 16
 Registry 16
 and FlashBackup 16
 requirements 21
 restore
 block-level 7
 file promotion 7
 rollback 7
 Retain snapshots for instant recovery 14, 18
 rollback 7


V

VMware 15, 19, 23
 introduction 9
 where to find documentation 9
 VSS method 25
 VxFS_Snapshot method 16
 VxVM
 volume name restriction 12


S
SANPoint Control 28, 30
 Schedules tab (policy) 18
 SCSI Extended Copy command 28
 sgscan command 29
 Shadow Copy Service (see VSS)
 Snapshot Client
 access web info 9
 configure policy 13
 feature overview 7
 Snapshot Client Options dialog 14, 15
 Snapshot Configuration Wizard 8, 9
 snapshots 7, 8


W
web access to recent Snapshot Client info 9
 wizard for Snapshot Client 8, 9
 world wide name 30
 WWPN 30



				
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