procedures to help you solve ServeRAID problems when servicing the computer. A complete list of error codes is in Table 12 on page 73.

EF 10 Default ISPR. No ISPR error present.

9ZXX thru BZXX

SCSI bus error caused either by cables, termination, defective drives, and so on.

1.Isolate the error between SCSI subsystem and controller by disconnecting all SCSI cables from suspect card, and reboot.

CAUTION:

Do not press F5. Doing so changes the configuration.

If an ISPR error is still present, take the following actions until the error is no longer present:

a.Reseat the controller

b.Replace the controller

Note: If the controller detects a configuration change, do not choose Save Changes. Instead, press F10 to bypass any options to this effect.

2.If the ISPR error is EF10 after disconnecting cables:

a.Confirm that the identified channel(s) is the cause of the error by verifying that the error presents itself only when the offending channel is reconnected.

b.Check termination of identified channel.

c.Check for proper backplane jumper configuration.

d.Check for proper cabling configuration in systems that use DASD status cables. Reconnect all cables that you disconnected at the beginning of this procedure.

e.Replace SCSI cable.

f.Replace SCSI backplane.

FFFF (or other code not listed)

1.Isolate between SCSI Subsystem and controller by disconnecting all SCSI cables attached to the suspect card, and reboot.

CAUTION:

CAUTION: Do not press F5. Doing so changes the configuration. If ISPR code is EF10 after disconnecting cables, follow the steps below until the error is eliminated:

a.Identify which channel is causing the error by reconnecting cables one at a time and rebooting until the error returns.

b.Disconnect one drive at a time attached to identified channel and reboot each time to determine which drive is causing the problem.

c.Replace SCSI cable attached to the identified channel.

d.Replace backplane attached to the identified channel

2.If the original ISPR code is still present after disconnecting all SCSI cables and rebooting, take the following actions until the error is no longer present:

a.Reseat the controller

b.Replace the controller

ServeRAID-4x problems and actions

Table 12 on page 73 lists problems and corrective actions associated with the adapter. The table helps you determine which adapters may need to be replaced at the conclusion of troubleshooting procedures.

72NAS 200 User’s Reference

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IBM 201 manual ServeRAID-4x problems and actions, 9ZXX thru BZXX, Do not press F5. Doing so changes the configuration