IBM Tape Library Magstar 3494, Руководство оператора

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intentionally damaging the library manager database or other operations.
Use of password-protection is optional.
Error Detection and Reporting
When the library is powered on, the library manager, the 3490E/3590 tape
subsystems and Virtual Tape Servers perform power-on diagnostics. The library
performs real-time error detection, fault isolation, error reporting, and error recovery
during normal operation.
In the event of a failure, the information is reported to the attached hosts for logging
and possible host recovery actions. When appropriate, host console messages are
posted by the library drive support software in the control program to request
operator-required actions or to present information for the operator. Refer to
“Chapter 7. Remote Library Manager Console Feature” on page 241.
Inventory Update
When inventory update is enabled and a door is opened then closed, an inventory
update is performed upon the return to auto mode. This process checks all of the
cartridge storage cells in the frames that had doors opened, and depending on the
selection made during the teach process, may also check any adjacent frames to
the frames that had doors opened.
Note: The drive feeds are also inventoried.
During an inventory update, processing of Audit and Eject operations are held until
the update has been completed. Selected mounts and demounts are processed,
depending on where the cartridge resides. No mounts or demounts are performed
on cartridges which reside in a rack that must be verified in the inventory update
operation, until the inventory update is complete. The duration of the inventory
update is affected by the number of database updates required and the number of
mounts and demounts that are done concurrently with the inventory update.
The Disable Inventory Update option is made available to the operator, at the mode
selection window, when the library is powered on. This option, if selected, disables
the inventory update during a cold start of the library, and speeds up the process of
bringing the library Online. Selecting Disable Inventory Update at the mode
selection window does not disable Inventory Update during normal operation.
A Disable Inventory Update option is available from the Commands pull-down. This
option disables the inventory update process on a cold start of the library, during
normal operations, and speeds up the process of changing modes after the doors
on the library are opened.
Note: The Disable Inventory Update option is not recommended for users who
open the library doors to add and to remove cartridges because no changes
in the library inventory are noted until inventory update is performed. If
cartridge inserts and ejects are handled through the Convenience
Input⁄Output Station or High-Capacity Input/Output Facility, then running with
Inventory Update disabled will speed operation. When the doors have
opened, Partial Inventory Update can be selected from the Commands
pull-down; this provides the most customer flexibility.
Chapter 3. Operational Characteristics
47