Compaq TruCluster Server AA-RHGWB-TE, Руководство пользователя

Страница: 201 / 320

SCSI bus without stopping all ASE services that generate activity
on the bus.
For this reason, we recommend that tape devices be placed on
separate shared SCSI buses, and that there be no storage devices
on the SCSI bus.
The cabling depends on whether or not there are one or two drives, and for
the two-drive configuration, if each drive is on a separate SCSI bus.
______________________ Note _______________________
It is assumed that the library robotics is on the same SCSI bus as
tape drive 1.
To connect the library robotics and one drive to a single shared SCSI bus,
follow these steps:
1. Connect a BN21K or BN21L between the last trilink connector on the
bus to the leftmost connector (as viewed from the rear) of the TL891.
2. Install a 0.3-meter SCSI bus jumper between the rightmost robotics
connector (second connector from the left) and the left DLT1 connector
(the third connector from the left).
3. Install an H879-AA terminator on the right DLT1 connector (the fourth
connector from the left).
To connect the drive robotics and two drives to a single shared SCSI bus,
follow these steps:
1. Connect a BN21K or BN21L between the last trilink connector on the
bus to the leftmost connector (as viewed from the rear) of the TL892.
2. Install a 0.3-meter SCSI bus jumper between the rightmost robotics
connector (the second connector from the left) and the left DLT1
connector (the third connector from the left).
3. Install a 0.3-meter SCSI bus jumper between the rightmost DLT1
connector (the fourth connector from the left) and the left DLT2
connector (the fifth connector from the left).
4. Install an H879-AA terminator on the right DLT2 connector (the
rightmost connector).
Configuring a Shared SCSI Bus for Tape Drive Use 8–21