Compaq TruCluster Server AA-RHGWB-TE, Руководство пользователя

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• TL891 MiniLibrary System User’s Guide
• TL881 MiniLibrary Drive Upgrade Procedure
• Pass-Through Expansion Kit Installation Instructions
The TL881 and TL891 Digital Linear Tape (DLT) MiniLibraries are offered
as standalone tabletop units or as expandable rackmount units.
The following sections describe these units in more detail.
8.11.1.1 TL881 and TL891 DLT MiniLibrary Tabletop Model
The TL881 and TL891 DLT MiniLibrary tabletop model consists of one unit
with a removable 10-cartridge magazine, integral bar code reader, and either
one or two DLT 20/40 (TL881) or DLT 35/70 (TL891) drives.
The TL881 DLT MiniLibrary tabletop model is available as either fast,
wide differential or fast, wide single-ended. The single-ended model is not
supported in a TruCluster Server configuration.
The TL891 DLT MiniLibrary tabletop model is only available as fast, wide
differential.
8.11.1.2 TL881 and TL891 MiniLibrary Rackmount Components
A TL881 or TL891 base unit (which contains the tape drive(s)) can operate
as an independent, standalone unit, or in concert with an expansion unit
and multiple data units.
A rackmount multiple-module configuration is expandable to up to six
modules in a configuration. The configuration must contain at least one
expansion unit and one base unit. The TL881 and TL891 DLT MiniLibraries
may include various combinations of:
• MiniLibrary Expansion unit — the MiniLibrary expansion unit enables
multiple TL881 or TL891 modules to share data cartridges and work as a
single virtual library. The expansion unit also includes a 16-cartridge
magazine.
The expansion unit integrates the robotics in the individual modules into
a single coordinated library robotics system. The expansion unit assumes
control of the media, maintaining an inventory of all media present in
the system, and controls movement of all media. The tape cartridges can
move freely between the expansion unit and any of the base units or data
units via the system’s robotically controlled pass-through mechanism.
The expansion unit can control up to five additional attached modules
(base units and data units) to create a multimodule rackmount
configuration. The expansion unit must be enabled to control the base
unit by setting the base unit to slave mode. The data unit is a passive
Configuring a Shared SCSI Bus for Tape Drive Use 8–49