STORE and TurboSTORE/iX Products Manual (B5151-90003)

162 Chapter11
Restoring Files
Restoring from Multiple Devices (RESTORESET)
Restoring from Multiple Devices (RESTORESET)
To RESTORE files from multiple devices, use the RESTORESET parameter in the RESTORE
command to reference the multiple devices. Use of the RESTORESET parameter is explained
in the following pages.
Sequential Devices
You can use sequential device configuration when you have a large set of files to RESTORE
from a number of tapes and you want to speed up the process. The sequential device
configuration is described under "Using Tape Devices Sequentially," in Chapter 3,
"Preparing Storage Devices."
To RESTORE files from sequential devices:
1. Mount the tapes on all of the devices you plan to use.
2. Use the FILE command to give each device a filename that indicates its position.
3. Use the RESTORESET parameter in a RESTORE command to reference the multiple
devices.
For example, to RESTORE files from three sequential devices, use the following set of
commands:
:FILE SEQ1;DEV=7
:FILE SEQ2;DEV=8
:FILE SEQ3;DEV=9
:RESTORE ;@.@.@;RESTORESET=(*SEQ1,*SEQ2,*SEQ3)
NOTE Do not back reference the filename of a tape device immediately before the
name(s) of the file(s) you are restoring when using the RESTORESET
parameter. Instead use a placeholder for the missing parameter normally
supplied when using a single tape device. The placeholder is provided by the
use of the first semicolon (;) in the RESTORE command.
The above RESTORE command restores all system and user files from three sequential
devices. The parentheses surrounding back-referenced filenames group the devices into a
device pool.
When RESTORE has transferred all the files from the first tape on the first tape device, it
immediately begins restoring files from the second tape on the second tape device. While
RESTORE continues, you can unload the first tape and mount a new tape on the drive. When
RESTORE finishes restoring the files on the last device, it reverts to restoring files from the
first device. The process continues to cycle through the devices in the device pool until it
has restored all the files you specified.
If you gave the tape devices a single filename such as:
:FILE T;DEV=TAPE