Compaq StorageWorks TL881/TL891 Family MiniLibrary System Reference Guide (July 2000)

Operation 2-37
Compaq Confidential – Need to Know Required
Writer:
Bob Young
Project:
Compaq StorageWorks TL881/TL891 Family MiniLibrary System Reference Guide
Comments:
Part Number:
127510-002
File Name:
c-ch2 Operation.doc
Last Saved On:
7/12/00 10:51 AM
Barcode Labels
Barcode labels are included with the MiniLibrary and Expansion Unit.
Additional labels can be ordered (see Appendix B). The label slips into the slot
adjacent to the write-protect switch on each tape cartridge. The code used can
be Code 39, Codebar, 2-of-9, standard 2-of-5, or interleaved 2-of-5, with a
length of 8 digits. Minimum element width is 0.03 in (07.5 mm).
MiniLibrary System Components
There are four basic components in the MiniLibrary system:
■
The MiniLibrary Base Module
■
The MiniLibrary Expansion Unit (master)
■
The MiniLibrary Data Unit
■
The PTM
The Expansion Unit can move media freely within itself and between the
MiniLibrary Base Modules and the Data Units via the PTM.
In the MiniLibrary system, you can combine modules to provide the right
combination of capacity and performance for your requirements. The
architecture lets you change or add to the mix of modules to optimize
throughput, capacity, or both as your storage requirements change.
When connected as a system, the robotics in MiniLibrary Base Modules and
Data Units operate from Expansion Unit commands. The host computer(s) are
not dependent on the internal geometry of the system, or on the actions or
capabilities of any of the slave modules. The Expansion Unit presents, to the
host(s), a single SCSI medium changer device with a single SCSI Medium
Transport element, several SCSI storage elements equal to the number of
cartridge magazine slots, several SCSI import/export elements specified
during configuration of the Expansion Unit, and a number of SCSI data
transfer elements equal to the total number of drives in the system.