Compaq AA-RHGWC-TE manual Preparing the TL890 DLT MiniLibrary Expansion Unit

8.8 Preparing the TL890 DLT MiniLibrary Expansion Unit

The topics in this section provide information on preparing the TL890 DLT MiniLibrary expansion unit with the TL891 and TL892 DLT MiniLibraries for use on a shared SCSI bus.

______________________ Note _______________________

To achieve system performance capabilities, we recommend placing no more than two TZ89 drives on a SCSI bus, and also recommend that no shared storage be placed on the same SCSI bus with a tape library.

8.8.1 TL890 DLT MiniLibrary Expansion Unit Hardware

The TL890 expansion unit is installed above the TL891/TL892 DLT MiniLibrary base units in a SW500, SW800, or RETMA cabinet. The expansion unit integrates the robotics in the individual modules into a single, coordinated library robotics system. The TL890 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 modules via the system’s robotically controlled pass-through mechanism. The pass-through mechanism is attached to the back of the expansion unit and each of the base modules.

For each TL891/TL892 base module beyond the first module, the pass-through mechanism must be extended by seven inches (the height of each module) with a DS-TL800-AA pass-through mechanism extension. A seven-inch gap may be left between base modules (providing there is sufficient space), but additional pass-through mechanism extensions must be used.

For complete hardware installation instructions, see the DLT MiniLibrary (TL890) Expansion Unit User’s Guide.

The combination of the TL890 expansion unit and the TL891/TL892 MiniLibrary modules is referred to as a DLT MiniLibrary for the remainder of this discussion.

8.8.2 Preparing the DLT MiniLibraries for Shared SCSI Bus Usage

The following sections describe how to prepare the DLT MiniLibraries in more detail. It is assumed that the expansion unit, base modules, and pass-through and motor mechanisms have been installed.

Configuring a Shared SCSI Bus for Tape Drive Use 8–29