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Service representative
The service representative has full authorization access to all functions of
the 3494 Tape Library.
If you choose to use password protection, the password can protect the following
functions of the Library Manager:
v Service menu
v Inventory new storage
v Reinventory complete system
v Emergency power off (EPO) recovery
v Shutdown
v Keyboard and display lockup
v System administrator to unlock
v Unlock keyboard and display
v Service Access
v Cancel VTS Export and Import
Each time a user enters a part of the application that requires a password, then
enters a password, a log entry is made at the Library Manager. Exiting a protected
menu also creates a log entry. See "Change System Administrator Password" on
page 355 for more information.
Database
The Library Manager creates and maintains a database that contains the following:
v The configuration of the 3494 Tape Library
v Physical location information for all the elements of the 3494 Tape Library that
the cartridge accessor services
v The inventory of the physical cartridge volumes and logical volumes that a VTS
manages; also information about their use and current status
v The status of each 3490E, 3590, or 3592 device and virtual device
As operations progress through the library, the Library Manager updates the
database dynamically on the disk drive to reflect the current status of the 3494
Tape Library.
3494 HA1 Option
If the 3494 HA1 Option is installed, the right service bay contains a second Library
Manager. Each Library Manager contains two hard (disk) drives: a primary disk
and a secondary disk. Under normal operation, one Library Manager is the active
Library Manager, and the other Library Manager is the standby Library Manager.
The active Library Manager, on its primary disk, creates and updates the database
dynamically to reflect the current status of each 3494 Tape Library. The secondary
disk contains a backup of the database, which the Library Manager also updates
dynamically to reflect the current status of the 3494 Tape Library.
If the active Library Manager fails, the standby Library Manager becomes the
active Library Manager automatically and takes control of operations. A new
backup database is then created on the active Library Manager's secondary disk.
The new active Library Manager runs in degraded mode until the failing Library
Manager is repaired. This allows continued operation of the 3494 Tape Library.
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Chapter 1. Introduction
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