This section discusses the options available for restoring backups
created by TurboSTORE/iX 7x24 True-Online Backup.
When restoring a backup that was created with the sync point at the beginning
of the backup, RESTORE performs the following tasks for each file restored:
Restores the initial file data.
Applies any before image log data that exists on the backup.
When a 7x24 true-online backup with the sync point at the
end of the backup is restored, RESTORE performs the following
tasks:
Restores the initially stored files.
Restores all new files that were added to the fileset during the backup
due to renames or builds.
Applies any changes made to files after they were written to the media
(the after image logs).
Does not restore all files that were deleted from the fileset during
the backup.
If RESTORE is unable to read the media directory information from a
media directory disk file, it asks you to mount the last piece of
media from the backup. Once it has read the media directory, it
prompts you to mount the necessary piece(s) of media for the
recovery process.
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 | NOTE:
Since the after image log data is stored at the end of the backup, files
that need to have after image log data applied is unavailable for
read OR write access, until the after image log data is applied at the
end of the backup. Once RESTORE reads and
applies the after image log data for a file, the file can be accessed again. |
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Restoring with a Disk Directory File (STOREDIRECTORY) |
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When restoring files, RESTORE first reads in the Store labels from
the devices specified either in the restorefile parameter, or in the
RESTORESET option. It then opens the appropriate media directory
disk file, if one exists. This allows RESTORE to more efficiently
restore files. The greatest advantage occurs when selectively
restoring files from many tapes, or if the backup was created with the
sync point at the end.
Selective restores can be optimized further by specifying the disk
directory filename with the STOREDIR[ECTORY] option. If you
specified a name for the backup at Store time with the
STOREDIRECTORY option, that name can also be specified here.
Alternately, you can specify the full HFS directory disk file created
by STORE.
Using the STOREDIR option causes RESTORE to read the directory
on disk and prompts you to mount the correct media for the restore,
shown as follows:
17:30/#S20/40/MOUNT MEDIA 2 OF SET 1 FOR RESTORE ON LDEV 7
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For example, to restore the backup created on June 22, 1994 at
1:30pm by Pin 30, issue the following command:
:RESTORE *tape;JONNYS.BIG.FILE;&
:STOREDIR=/SYS/HPSTORE/store_dirs/store_19940622_1330_pin30_wed
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To restore the full backup from Friday named FRIFULL, issue the
command:
:RESTORE *tape;/;STOREDIRECTORY=FRIFULL.HPSTORE.SYS
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