HP 3000 Manuals HP 3000 Manuals
Restoring Files from Magneto-Optical Disk
To RESTORE files from magneto-optical devices, use the MOSET parameter in
the RESTORE command to reference the devices. Use of the MOSET parameter
is explained in the following pages.
Specifying the Magneto-Optical Device
Normally, you do not need to designate a specific device or LDEV when
restoring from a magneto-optical device. You use the MOSET parameter to
indicate a magneto-optical device. You do not use file equations as you
do when using tape drives. Nor do you use the RESTORESET parameter to
back reference the device. Instead, you specify that the RESTORE is to
be from the Model 20GB/A through the MOSET parameter of the RESTORE
command. For example:
;MOSET=(MO)
If you must specify the LDEV, (for example, you have multiple
magneto-optical devices and media is not loaded in the magneto-optical
device), the MOSET parameter can be used to specify the LDEV number. For
example:
;MOSET=(101)
Specifying the Backup Name
The media name you specified with the STORE command is required when
restoring from a magneto-optical device. Use the NAME parameter to
indicate the logical tape name from which the RESTORE is to be done. For
example:
;NAME=BK1130PM.D23OCT90.KING
If the media is not loaded in the magneto-optical device at the time the
RESTORE is started, you are prompted to mount the media. For example:
23:24/#S1/51/MOUNT THE MEDIA LABELLED BK1130PM.D23OCT90.KING IN THE MAILSLOT OF LDEV 101 (Y/N)?
After you load the correct media in the magneto-optical device, reply to
the message.
When the specific media is no longer required, it ejects to the devices
mail slot. The media is returned to the storage slot or mail slot
depending on where the specific media was loaded.
Restoring from a Single Magneto-Optical Device
The following example illustrates the RESTORE command to RESTORE files
from a single magneto-optical device.
:RESTORE; @.@.@;MOSET=(MO);NAME=BK1130PM.D23OCT90.KING
Restoring from Multiple Devices
Multiple magneto-optical devices can be used in parallel (sequential use
is not recommended) for restores by specifying each magneto-optical
device drive with the MOSET parameter. For example, two devices in
parallel, the MOSET entry would be:
;MOSET=(MO),(MO)
Restoring from Sequential Magneto-Optical Devices.
NOTE Restoring from sequential magneto-optical devices is not
recommended.
The following example illustrates the RESTORE command entry to use two
magneto-optical devices sequentially.
:RESTORE @.@.@;;MOSET=(MO,MO);NAME=BK1130PM.D23OCT90.KING
With this usage, only one drive will be active restoring at any given
time while the other drive is swapping media. Since the swap time for
media is very short, this method is not an efficient use of the two
magneto-optical devices.
Restoring from Parallel Magneto-Optical Devices.
Restoring from parallel magneto-optical devices is the recommended method
of using multiple magneto-optical devices. The following example
illustrates the RESTORE command entry to use two magneto-optical devices
in parallel.
:RESTORE;@.@.@;MOSET=(MO),(MO);NAME=BK1130PM.D23OCT90.KING
With this usage, both drives will be actively restoring simultaneously.