2 cabling the tz88n-va – Compaq AA-RHGWB-TE User Manual
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Table 8–1: TZ88N-VA Switch Settings
SCSI ID
SCSI ID Selection Switches
1
2
3
4
5
6
Automatic
a
Off
Off
Off
On
On
On
0
Off
Off
Off
Off
Off
Off
1
On
Off
Off
Off
Off
Off
2
Off
On
Off
Off
Off
Off
3
On
On
Off
Off
Off
Off
4
Off
Off
On
Off
Off
Off
5
On
Off
On
Off
Off
Off
6
Off
On
On
Off
Off
Off
7
On
On
On
Off
Off
Off
a SBB tape drive SCSI ID is determined by the SBB physical slot.
8.1.2 Cabling the TZ88N-VA
There are no special cabling restrictions specific to the TZ88N-VA; it is
installed in a BA350 StorageWorks enclosure. A DWZZA-VA installed in slot
0 of the BA350 provides the connection to the shared SCSI bus. The tape
drive takes up three slots, so two SCSI IDs are unavailable for disks in this
StorageWorks enclosure. Another BA350 may be daisy chained to allow the
use of the SCSI IDs unavailable in the first StorageWorks enclosure due to
the TZ88 tape drive.
You must remove the DWZZA-VA differential terminators. Ensure that
DWZZA-VA jumper J2 is installed to enable the single-ended termination.
The BA350 jumper and terminator must be installed.
A trilink connector on the DWZZA-VA differential end allows connection to
the shared bus. An H879-AA terminator is installed on the trilink for the
BA350 on the end of the bus to provide shared SCSI bus termination.
Figure 8–2 shows a TruCluster Server cluster with two shared SCSI buses.
The top shared bus has a BA350 with disks at SCSI IDs 1, 2, 4, and 5. The
other BA350 contains a TZ88N-VA at SCSI ID 3.
Configuring a Shared SCSI Bus for Tape Drive Use 8–3