Technical data

If you are using a DWZZB-VW, install it in slot 0 of the BA356.
10.4.1.3 Preparing an UltraSCSI BA356 Storage Shelf for a TruCluster Configuration
An UltraSCSI BA356 storage shelf is connected to a shared UltraSCSI bus,
and provides access to UltraSCSI devices on the internal, single-ended and
wide UltraSCSI bus. The interface between the buses is the DS-BA35X-DA
personality module installed in the UltraSCSI BA356.
To prepare an UltraSCSI BA356 storage shelf for usage on a shared SCSI
bus, follow these steps:
1. Ensure that the BA35X-MJ jumper module is installed behind slot 6
(see Section 10.3.2.1, Figure 10–7, and Figure 10–8).
2. Set the SCSI bus ID switches on the UltraSCSI BA356 personality
module (DS-BA35X-DA, Figure 10–3) as follows:
• If the UltraSCSI BA356 is to house disks with SCSI IDs in the
range of 0 through 6, set the personality module address switches
S3-1 through S3-7 to OFF.
• If the UltraSCSI BA356 is to house disks with SCSI IDs in the
range of 8 through 14, set personality module address switches S3-1
through S3-3 to ON and switches S3-4 through S3-7 to OFF.
3. Disable the UltraSCSI BA356 differential termination. Ensure that
personality module (DS-BA35X-DA) switch pack 4 switches S4-1 and
S4-2 are ON (see Figure 10–3).
____________________ Note _____________________
S4-3 and S4-4 are not used on the DS-BA35X-DA.
4. Install an H8861-AA VHDCI trilink connector on the UltraSCSI BA356
personality module.
10.4.2 Cabling a Single Storage Shelf
A cluster with a single storage shelf is generally of little use because of
the lack of disk space. But, for those customers whose primary use of the
cluster is the Memory Channel application programming interface (API),
storage is not an issue; they only need a shared SCSI bus to fulfill the
TruCluster Server requirements. Therefore, there are no illustrations in this
section showing clusters with single storage shelves. The illustrations in
Section 10.4.3 can be used with the descriptions in this section.
Configurations Using External Termination or Radial Connections to
Non-UltraSCSI Devices 10–17