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

46 Chapter3
Preparing Storage Devices
Preparing Tape and DDS Devices
Preparing Tape and DDS Devices
Prepare your backup devices by mounting the first media in the stack near each device
onto that device. Follow the instructions in Chapter 3, "Preparing Storage Devices," for
mounting backup media.
After mounting the media, check the console for a message telling you that the volume has
been mounted. For example:
14:47/31/VOL (Unlabeled) mounted on LDEV#8
Note the backup drive's logical device (LDEV) number. (The LDEV number is 8 in the
example above.) You may need it to answer a backup request later.
Single Tape Devices
When you store to a single backup device, STORE only writes files to one device at a time.
When the backup media is full, it automatically rewinds then prompts you to load new
backup media. When the second unit of backup media is loaded, STORE continues writing
files until all of the qualified files are stored or another unit of backup media is needed. If
you are storing many files, or files that are particularly large, you may need individually
load several units of backup media onto the single device.
Figure 3-7. illustrates a single-device backup.
Figure 3-7. Single-Device Backup
The FILE command assigns a filename to a backup device according to its logical device
number or its device class. For example, the FILE command below assigns the filename T to
the device with LDEV 8:
:FILE T;DEV=8
To store files to only one device, backreference that device in your STORE command. For
example:
:FILE T;DEV=TAPE
:STORE @.OPERATOR.SYS;*T
Using one or more FILE commands is recommended, especially when your system is