8.9Preparing the TL895 DLT Automated Tape Library for Shared SCSI Bus Usage
The topics in this section provide information on preparing the TL895 Digital Linear Tape (DLT) automated tape library for use on a shared SCSI bus.
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To achieve system performance capabilities, we recommend placing no more than two TZ89 drives on a SCSI bus segment. We also recommend that storage be placed on shared SCSI buses that do not have tape drives. This makes it easier to stop ASE services affecting the SCSI bus that the tape loaders are on.
The
•TL895 DLT Tape Library Facilities Planning and Installation Guide
•TL895 DLT Library Operator’s Guide
•TL895 DLT Tape Library Diagnostic Software User’s Manual
For more information on upgrading from five to six or seven tape drives, see the TL895 Drive Upgrade Instructions manual.
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There are rotary switches on the library printed circuit board used to set the library and tape drive SCSI IDs. The SCSI IDs set by these switches are used for the first 20 to 30 seconds after power is applied, until the electronics is activated and able to set the SCSI IDs electronically.
The physical SCSI IDs should match the SCSI IDs set by the library electronics. Ensure that the SCSI ID set by the rotary switch and from the control panel do not conflict with any SCSI bus controller SCSI ID.
The following sections describe how to prepare the TL895 for use on a shared SCSI bus in more detail.
