HP 3000 Manuals HP 3000 Manuals
Restoring TurboSTORE/iX 7x24 True-Online Backups
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:
1. Restores the initial file data.
2. 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:
1. Restores the initially stored files.
2. Restores all new files that were added to the fileset during the
backup due to renames or builds.
3. Applies any changes made to files after they were written to the
media (the after image logs).
4. 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.
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.
Restoring with a Disk Directory File (STOREDIRECTORY)
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
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
To restore the full backup from Friday named FRIFULL, issue the command:
:RESTORE *tape;/;STOREDIRECTORY=FRIFULL.HPSTORE.SYS