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Chapter 9 — Configuring and Using Media Lifecycle Management
Consideration
Storage
Management
Software
Configuration
Global Spare Drives
Blackout Periods
Cleaning Partitions
Enable PostScan
PostScan is enabled by selecting one or more trigger criteria when you
configure a partition (see Enable and Configure MLM PreScan and
PostScan on page 180). The available PostScan options depend on the drive
type and whether or not a Global Spare drive is assigned to the partition.
PostScan is enabled and configured for each individual partition. PostScan does not
Important
operate until the PostScan option is selected and one or more triggers are specified
for the partition
Request a Manual PostScan
The automatic PostScan triggers only add MLM‐enabled data cartridges to
the PostScan queue. However, cartridges can also be added to the PostScan
queue manually. This is especially useful if your library contains cartridges
that are not MLM‐enabled. You can also use the manual PostScan process
to verify a suspect MLM‐enabled cartridge even if it was previously
scanned.
Cartridges that are manually added to the PostScan queue are processed
before cartridges that were added as a result of the trigger criteria for the
partition. They are processed using the PostScan option that was specified
for the partition.
August 2019
Description
When using automatic PostScan to check your cartridges, configure your
storage management software to allow at least 15 minutes for a requested move
to complete. If a cartridge is in the process of being scanned when it is
requested for a backup or restore operation, it must be unloaded from the
Global spare and moved to another drive before the move request is reported
as complete.
Both FullScan and QuickScan using Global Spare require a Global Spare drive.
Although a Global Spare drive can be shared by multiple partitions, assigning a
separate Global Spare drive to each partition is recommended. Each partition
can then perform PostScan whenever the prerequisites are met, without waiting
for PostScan in another partition to complete.
Because the storage management software can potentially request a tape that is
currently undergoing verification, you can configure blackout periods during
which the PostScan operation is suspended. Configuring blackout periods
ensures that PostScan does not operate during your normal backup window.
The blackout periods apply to all of the storage partitions in the library. See
Configure PostScan Blackout Periods on page 260 for instructions.
The PostScan feature cannot be enabled for a cleaning partition and does not
affect cleaning tapes.
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User Guide—Spectra T950 Library
Using PostScan
272
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Troubleshooting
