l The cartridge inventory is separate from the MLM database and only shows
cartridges currently stored in the library. The cartridge inventory does not
differentiate between MLM-enabled cartridges and those that are
not MLM-enabled.
Discovery Requirement
Until an MLM-enabled cartridge is discovered when it is loaded into and then
unloaded from a drive for the first time, it is not included in the MLM database.
Media Health Score
The initial load/unload during discovery establishes an initial media health score for
each cartridge and adds this information to the MLM database. This initial health
score may not accurately reflect the actual health of the media. The health score
stabilizes and becomes more accurate after the first four loads/unloads as current
usage statistics are updated and used in the tape’s health scoring.
MLM Health Reports
MLM reports let you review important health information about every MLM-enabled
data tape and cleaning tape in your library. You can generate comprehensive health
reports for the MLM-enabled media in the whole library or in an individual partition.
You can also generate more detailed reports with information about compression
ratios, load counts, write errors, remaining capacity, encryption status, and more.
The MLM reports help you identify tapes with high error rates or other problems (for
example, a dropped leader pin) that pose a risk to protecting your data. These tapes
can then be removed before they cause data corruption or other problems. See
Generate MLM Reports on page175 for detailed information about the types of
reports you can generate.
MLM Database Management
After a cartridge is added to the MLM database, its MLM data remains in the
database even if the cartridge is exported from the library. If the cartridge is later
reimported, the MLM database is updated to reflect any new information obtained
from the cartridge MAM. When a cartridge is permanently removed from service, it
can be manually deleted from the database.
The MLM database is restricted to a maximum of 10,000 records. When this limit is
reached, the record for the least recently exported cartridge, as determined by the
Export Date tracked by MLM, is automatically deleted. The library does not notify
you when it reaches the maximum number of records.
JANUARY 2023 171
SPECTRA STACK LIBRARY
USER GUIDE
CHAPTER 6 - CONFIGURING AND USING MEDIA LIFECYCLE MANAGEMENT
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