BackBox H4.00 User Manual

Product Description
29 BackBox H4.00 User Manual
SET DEFINE USE OUT
ADD DEFINE =TAPE1
Un-cataloged volumes
Restricting the access to volumes that are not cataloged has constraints.
There is no volume status in Guardian that allows recognizing a SCRATCH volume
before accessing it and so the authorization check is not bypassed.
The user must plan to avoid a denied access to SCRATCH/expired volumes. This is
generally easy as Un-cataloged volume labels are often hard-coded in the tape
application OBEY files and therefore the same volume is always used by the same
application and user.
Updating the security attributes of a volume
The Security attributes of a volume can be changed through the Web interface, in
the Volume tab, volume details page, Edit button. To change the volume ownership
or access authorizations, the user must have CONTROL access to the volume, or be
SUPER.SUPER on the node running the Domain Manager, and the volume must be in
a PRIMARY Data Store.
Device reservation
Some tape devices can be reserved for specific usage, for example if six devices are
defined for a NonStop node, one of these drives can be reserved for TMF AUDIT
DUMP activity.
Tape devices are reserved for volume class(es) that are defined in the Volume Group
configuration.
Devices are reserved by using the BackPak user interface, in the configuration of
each involved tape device.
Reservations can also be modified by the TACL macro BB020_RESERVE, allowing
automatic reservation changes in scheduled batch.
The default is for a device to mount volume of any class.
Reserved drives are preferred for volume of the specified class.
Pre-load
When a multi-volume backup set has been moved from a Windows disk Data Store
to an Enterprise Backup server, a RESTORE operation may last for a long period
because of the idle time needed at each volume switch to execute the restore script.
Pre-load applies only to the restore of multi-volume backup sets, anticipating the
load request of the next volume by executing its restore script, while the previous
volume is being read by the NonStop.
Pre-load brings parallelism between the reading of a virtual volume by the NonStop
host, and the restoring of Windows disk files for the next volume.