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Chapter 9 — Configuring and Using Media Lifecycle Management
When the PreScan process completes, the library stores the tape health
information for the cartridge in the MLM database. It also writes the MLM
data to the cartridge MAM. When the drive ejects the cartridge, the library
returns it to its original slot.
Requirements for Use When using PreScan, make sure that you consider
the following requirements:
Consideration
Updating MLM
Data on MAM
Drive Availability
Auto Drive Clean
Restrictions
Cleaning Partitions
U
P
S
SING
OST
This section provides detailed information about how PostScan operates,
as well as prerequisites for using PostScan and performing manual
PostScan operations.
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 (see
Operational Overview
PostScan — e ither FullScan or QuickScan — p erforms a readability
verification test to verify data integrity for all of the cartridges in the MLM
database. FullScan uses a Global Spare drive assigned to the partition and
QuickScan uses a drive in the partition or Global Spare drive assigned to the
partition to check each cartridge in the partition for media errors that can
impact the ability to restore the data.
August 2019
Requirement
Updating the cartridge MAM requires the cartridge to be write‐enabled.
Important:
If a cartridge is write-protected when it is inserted into a drive, the
information about the cartridge is added to the MLM database, but the library
cannot update the MLM information on the cartridge's MAM.
The media discovery process loads the cartridges in the partition into the drives
assigned to that partition. While in use for PreScan, host moves to the drives being
used are delayed until the PreScan operation completes. Spectra Logic highly
recommends that you perform the manual media discovery process when your
storage management software is not accessing the library and the library is idle.
Auto drive clean operations do not start while PreScan is running on any
partition that is associated with the cleaning partition. If a drive requires cleaning,
wait until the PreScan operation is complete and then manually clean the drive.
The PreScan feature cannot be enabled for a cleaning partition and does not
affect the operation of cleaning cartridges.
CAN
Enable and Configure MLM PreScan and PostScan on page 180
Note:
PostScan cannot be configured for use in the same partition as
Spectra SKLM or KMIP encryption key management.
User Guide—Spectra T950 Library
Using PostScan
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Troubleshooting
