Mlm Prescan And Postscan - Spectra Logic Spectra T950V User Manual

Chapter 9 — Configuring and Using Media Lifecycle Management

MLM PreScan and PostScan

Overview MLM PreScan and PostScan are configurable background
processes that use a drive to provide two levels of verification for data
cartridges. See Using PreScan on page 266 and Using PostScan on page 267
for detailed information about configuring and using PreScan and
PostScan.
Enable and Configure PreScan and PostScan Both PreScan and PostScan
are enabled and configured as part of the partition creation process, as
described in Enable and Configure MLM PreScan and PostScan on
page 180. During configuration you set the scanning frequency and select
the types of scan you want to use.
Usage Requirements Although a Global Spare drive can be shared by
multiple partitions, assigning a separate Global Spare drive to each
partition is recommended. If you select to perform a FullScan or a
QuickScan using a Global Spare drive, each partition can then perform
PostScan operations whenever the prerequisites are met, without waiting
for PostScan in another partition to complete.
Refer to the following sections for additional information about using the
PreScan and PostScan features:
This section...
Assign Global Spare Drives
on page 176
Using PreScan on page 266
Using PostScan on page 267
PreScan and PostScan System Messages Both PreScan and PostScan
generate system messages as possible error conditions are detected (for
example, a broken leader or a media error). The messages indicate that the
error condition was detected by the PreScan or PostScan process and not
during normal operation.
Interaction with Move Requests If a host requests a move while a
cartridge is being scanned using one of the partition drives (PreScan or
QuickScan), the move is delayed until the scan completes and the cartridge
is returned to its slot.
August 2019
Note: PostScan and Spectra SKLM or KMIP encryption key
management cannot be configured for use in the same partition.
Provides...
Information about configuring a Global Spare drive. A Global Spare
drive must be configured for the partition before the FullScan option
can be used.
Usage requirements for PreScan.
Detailed information about how the QuickScan and FullScan options
in the PostScan feature operate. This section also provides
instructions for manually adding a tape to the PostScan queue and
pausing the currently running PostScan process.
BlueScale Media Lifecycle Management
User Guide—Spectra T950 Library
252