Qualstar Q24, Инструкция по установке и эксплуатации

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Q24 Tape Library Installation and Operations Manual
© Copyright QUALSTAR 2014 56
3.3 Partitioning the library
The Q24 Tape Library may be addressed either as a single ‘logical library’, or it may be partitioned into
2 logical libraries. In the latter case, two half‐height tape drives must be installed, because each drive
is fully dedicated to a single partition. Similarly, each 12‐slot magazine is fully dedicated to a single
partition. (Note however, that a single partition may include multiple magazines and multiple drives.)
Single partition configuration

Tape drives: one or two half‐height drives (default element addresses = 256 or 256/257)

Magazines: #1 and #2
Dual partition configuration
Partition 1

Tape drives: half‐height drive #1 (default element address = 256)

Magazines: #1
Partition 2

Tape drives: half‐height drive #2 (default element address = 256)

Magazines: #2
The mail slot (if configured as MAIL) will be shared between the logical libraries.
NOTE

The SCSI element addresses shown above are the default values
which are valid in a new library or after a “Reset to Default”.
They can be changed by SCSI SMC command.
Removed Drives
If a drive is physically removed, it is reported to the host application by reference to its SCSI element
address. It is reported as ‘not accessible’ until it is inserted again in the drive slot and either:

A “Reset to Default” from any user‐interface occurs, or

The logical library configuration changes (adding/removing of libraries)