StorageTek Host Software Component 6.0, Руководство системного программиста

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Chapter 2. Host Software Component Functions 43
1st ed., 6/30/04 - 312579601
Volume/Cell Control Functions
Volume/cell control functions coordinate and control the location of tape cartridges in the
library.
Volume/cell control functions described in this section include:
• Moving volumes within the library
• Scratch subpool management
• Scratch threshold task restart.
Moving Volumes within the Library
Often there is need to move a single volume, several volumes, or a range of volumes to
other locations within a library. The destination for the volume(s) may be within the same
LSM or different LSM(s). The Volume Move function provides you with the capability to
move volumes at your discretion. Volume movement may be required because of:
• changes in your library hardware configuration. Addition of tape transports or LSMs
to a library configuration often requires that volumes be moved to accommodate the
new hardware configuration. Panels can be frozen to prevent allocation of new
volumes to those panels. It is not necessary to move volumes that reside on a panel
before it is frozen, however, volumes should be moved off frozen panels that will be
changed.
• the need to achieve better control over library tape activity.
Volumes can be moved by any of the following methods:
• MOVe operator command
• MOVe utility
• tape management interface MOVE request
• Scratch Redistribution utility.
These methods provide you with the operational flexibility often needed within a library
installation.