IBM 000-8697 User Manual

Data Consistency, Recovery, and Migration

It might be that your configuration defines both

TAPEDEV

and

LTAPEDEV

as

the same device. Since this is possible, tbtape prompts for you to mount the
level-0 archive tape and to press

RETURN

to continue the restore. If your tape

is already mounted on the archive device, simply press

RETURN

.

As the restore begins, tbtape reads each page of data from the archive tape(s)
and writes the page to the address contained in the page header.

The tbtape process prompts for additional tapes if the level-0 archive is
contained in more than one volume.

After the level-0 archive is restored, tbtape prompts for additional levels. You
must be aware of the archive levels required for your specific restore. If you
do not have any other archive levels to restore, or if for some reason you wish
to stop at a specific level, respond

 N

 to indicate no at the following prompt:

Do you have another level of tape to restore?

After the last archive tape is restored, the tbinit process clears the physical
log to prevent fast recovery activity as it initializes shared memory. You will
see the following message:

Initializing, please wait ...

The tbtape process automatically prompts you to indicate if you want to
restore any logical logs. This same prompt tells you the logical log ID number
at which the rollforward should begin:

Is there a logical log to restore? (y/n)
Roll forward should start with log number 28

You must rely on your own tape-labelling system to direct you to the specific
tape that contains this logical log file. All logical log files must be rolled
forward in sequence. If this tape is not available, you cannot roll forward any
log files.

If you respond with a

 y

, for yes, OnLine prompts you to mount the tape.