Spectra Logic Spectra T950V User Manual page 268

Chapter 9 — Configuring and Using Media Lifecycle Management
The PostScan process is performed by the library independent of the
storage management software normally used to read and write data to the
tape. You can choose to perform PostScan either automatically or manually.
For automatic scans you can set the scanning frequency and select options
to determine the type of scan performed.
Using FullScan on tapes that are written using variable‐length block sizes
is not recommended.
Prerequisites for Starting a PostScan Operation
When an MLM‐enabled cartridge meets the PostScan trigger criteria
configured for the partition, the cartridge is added to the PostScan queue.
The queue is processed in a first‐in‐first‐out (FIFO) basis.
Before beginning the PostScan process, the library verifies that the
following prerequisites are met:
 The system is idle for the period of time specified for the partition (see
 The library is not currently in a PostScan blackout period (see
 If Full Scan is enabled, a Global Spare drive assigned to the partition is
August 2019
Note: The automatic PostScan triggers only apply to MLM‐enabled
cartridges. Cartridges that are not MLM‐enabled must be
manually added to the PostScan queue (see Request a Manual
PostScan on page 272).
Enable and Configure MLM PreScan and PostScan on page 180).
Configure PostScan Blackout Periods on page 260).
available.
— O R —
If QuickScan is enabled, a drive in the same partition as the cartridge
that met the PostScan trigger criteria is available.
— O R —
If QuickScan with Spare Drives is enabled, a Global Spare drive
assigned to the partition is available.
User Guide—Spectra T950 Library
Using PostScan
268