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Basics:
•
There are four ways to attach to SCSI devices:
— KZPAA, a PCI adapter with a single-ended SCSI port
— KZPSA, a PCI adapter with a SCSI port
— KZPSC, the RAID adapter with one to three FWD SCSI ports
— ISP1020, a PCI chipset on the KFTIA; each KFTIA has three FWD
(fast wide differential) SCSI ports and one single-ended SCSI port.
•
Each port has a maximum of eight nodes per bus, including the initia-
tor or host.
•
Each modular storage shelf (BA350) has a power supply and can hold
seven 3.5" SBBs (such as RZ26s or TLZ06s), two 5.25" SBBs (such as
the RZ73 drives), or a combination of these.
•
SCSI configurations vary depending upon the particular adapter being
used. Read the manuals associated with each adapter to learn the con-
figuration rules.
All cabling and node setting has been completed prior to shipping. To
check the configuration, check self-test and issue a show device console
command:
The system goes through self-test. Check that the KFTIA, the
1
KZPAA, the KZPSA, and/or the KZPSC adapters passed self-test.
Issue a show device command. In this example, the SCSI ports on
2
the KFTIA are polled first; only two devices are found on the single-
ended port ips3. A KZPSA in slot 5 of the PCI that is connected to
the KFTIA through hose1 is polled and shows the adapter at node 7
and six RZ26L disks at nodes 1 through 6.
Each port connects to a shelf housing up to seven RZxx drives on one
3
bus (see Figure 7-4). All devices in this example are reporting to the
console and are working. When a DWZZA is used, it occupies a
StorageWorks shelf slot, but it is not a node nor is it "seen" by the
console.
Diagnostics and Utilities 7-13
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