Table of ContentsView in Frames

Specifying a blocking factor

You can specify a blocking factor using the b option in the dump command line.

Step

  1. To specify a blocking factor for a backup, include the b option in the dump command line.

Example

The following command performs a level-0 backup of the /vol/vol1 volume. This command writes 32 KB of data at a time, enabling you to restore the data from systems that limit each write to 32 KB.

dump 0ufb rst0a 32 /vol/vol1

The following list describes the elements of the command line:
0
Does a full backup.
u
Records the backup in the/etc/dumpdates file.
f
Specifies that a tape device is supplied in the command line.
b
Specifies that a blocking factor is provided.
rst0a
The tape drive rewinds the tape.
32
The blocking factor is 32, so writes 32 KB of data at a time.
/vol/vol1
The volume to be backed up.