3X-KZPEA Release Notes, March 2005

SRM Console Notes

Installations that use version 6.0 or earlier of the SRM console must use the

“set pk*0_host_id” feature under SRM as well as setting the host SCSI ID under the

“run bios pk*0” feature of the system. These actions are required to change the SCSI ID of a port on the

KZPEA board.

Version 6.1 and later of the SRM console will only support using the “run bios pk *0” method of setting the

host SCSI ID on the KZPEA board. If you attempt to use the “set pk*0_host _id” feature under SRM console

version 6.1 the following message will appear:

“Protected from attempted operation”

Software Notes

The minimum acceptable version of Compaq Analyze is 4.0.

The driver for Tru64 UNIX currently does not do domain validation on warm swaps. Domain validation is

only performed during boot time and is performed to ensure that the SCSI bus speed negotiated with the

device can be executed without data corruption or bus errors. If an error or corruption occurs during domain

validation the speed of the SCSI bus will be decreased until no errors are detected.

Disk warm swaps will force a negotiation with the device that may result in an increase or decrease in SCSI

bus transfer speed, depending on the device. A problem would occur using the KZPEA controller if you

were using a SCSI-2 storage shelf with SCSI-2 devices and then warm swapped a SCSI-2 device with an

ULTRA-160 device. Both the adapter and device would negotiate for the ULTRA-160 speed on a SCSI-2

storage shelf. The subsequent transfers could result in data corruption.

Caution must be used when performing warm swaps to ensure that the hardware (adapter, storage shelf,

cables, and device) supports the negotiated SCSI bus transfer speed.

Installation in a Tru64 UNIX TruCluster Server Environment

Information on a cluster installation, including existing clusters, can be found in the TruCluster Server

documentation set at:

http://www.tru64unix.compaq.com/docs/pub_page/cluster_list.html

Shared Bus Support

Installation in a Shared SCSI Bus Configuration

The KZPEA is supported in a 2 node shared SCSI bus configuration. This configuration requires the SCSI

ID of each channel used in a shared bus on one of the KZPEA adapters to be changed from the default ID 7

to ID 6. There are three possible shared bus configurations (A, B and C).

Note: Configuration A is OBSOLETE and not recommended for new installations. Configurations B and

C are recommended for new installations and upgrades to existing environments.

Configuration A

Configuration A (Figure 1) requires the use of Y-cables at each node with one adapter being in the middle

of the bus. The on-board termination of both adapters in both nodes must be disabled for each channel used

in a shared bus configuration. Termination is disabled by removing jumper J5 for SCSI Channel 1/A and

jumper J3 for SCSI Channel 2/B, and also setting the Host Adapter SCSI Termination to “Low OFF/High

OFF” for Channel 1/A and “Disabled” for Channel 2/B with the SCSI Configuration Utility.

Refer to the KZPEA User Guide regarding operation of the adapter’s onboard SCSI Configuration Utility.