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Veritas NetBackup™ Snapshot Client Administrator's Guide

Last Published: 2019-06-28

Product(s): NetBackup (8.2)

Configuring FlashBackup policy for backward compatibility (UNIX only)

Before NetBackup 5.0, FlashBackup was a separate product with two built-in snapshot methods: snapctl driver (nbu_snap) for Solaris clients and a VxFS snap driver for HP clients. The configuration procedure for a pre-5.0 FlashBackup policy was different from the procedure in 5.0 and later, as follows:

Unless FlashBackup was combined with NetBackup 4.5 ServerFree Agent, the snapshot methods were preset to the snapctl driver (Solaris) and VxFS snap driver (HP).
The cache partition for the snapctl driver and VxFS snap driver had to be specified as a CACHE= entry in the policy's file list.
To use multiple data streams, other directives had to be added to the policy's Backup Selections (file) list.

The following procedure and related topics explain how to configure a FlashBackup policy with a CACHE= entry in the policy's Backup Selections list. This means of configuration is provided for backward compatibility.

To configure FlashBackup policy for backward compatibility (UNIX only)

Leave Perform snapshot backups deselected on the policy Attributes tab. NetBackup uses nbu_snap (snapctl driver) for Solaris clients or VxFS_Snapshot for HP.
On the policy's Backup Selections tab, specify at least one cache device by means of the CACHE directive. For example:
```
   CACHE=/dev/rdsk/c0t0d0s1
```
This cache partition is for storing any blocks that change in the source data while the backup is in progress. CACHE= must precede the source data entry. Note the following:
- Specify the raw device, such as /dev/rdsk/c1t0d0s6. Do not specify the block device, such as /dev/dsk/c1t0d0s6.
- Do not specify the actual device file name. For example, the following is not allowed:
```
/devices/pci@1f,0/pci@1/scsi@3/sd@1,0:d,raw
```
- Wildcards (such as /dev/rdsk/c0*) are not allowed.
- The CACHE entry must precede the entry for the source data you want to back up.
- All entries in the Backup Selections list, including the source data, must be the full path name of a raw device in the form:
  On Solaris: /dev/rdsk/cxtxdxsx
  On HP: /dev/rdsk/cxtxdx
  where x is an integer.
- For multiple data streams, you can include multiple entries in the Backup Selections list.
  For example:
```
CACHE=/dev/rdsk/c1t4d0s0
/dev/rdsk/c1t4d0s7
CACHE=/dev/rdsk/c1t4d0s1
/dev/rdsk/c1t4d0s3
/dev/rdsk/c1t4d0s4
```
- See Requirements for the cache partition.
- See About the cache partition.

More Information

About the cache partition

Requirements for the cache partition

Directives for multiple data streams

Configuring FlashBackup policy for backward compatibility (UNIX only)