RAID Array 450 HSZ50 HSOF Software Version 5.7 for Compaq Tru64 UNIX Release Notes

RAID Array 450 HSZ50 HSOF Software Version 5.7 for Compaq Tru64 UNIX

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7.0 Avoiding Problem Situations

In certain situations, you may experience unusual controller behavior.

Paragraphs 7.1 through 7.9 present information to help you avoid such

situations and to recover from them if they occur:

• HSUTIL Program Failure During a Code Load Firmware Upgrade

• Compaq Tru64 UNIX Patch Kits for Issue Resolution

• CLEAR_ERRORS LOST_DATA Command

• Only One Switch per CLI Command Recommended

• Hot Swapping Devices

• Write-Back Cache Battery Replacement

• Restoring Power after Emergency Cab Shutdown

• Using the CLI and CF Menu Simultaneously in a Dual Configuration

• Changing Preferred Access Device

7.1 HSUTIL Program Failure During a Code Load Firmware

Upgrade

As noted in Section 3.3, in a rare occurrence the HSZ50 controller may not be

able to use the HSUTIL program to perform a “code load” firmware upgrade to

TZ87/88/89 tape drives or any associated Automated Tape Library. In such a

case the HSUTIL program refuses to perform the upgrade because it

incorrectly determines that there is a tape present in the target tape drive when

there is none.

The HSZ50 controller has the capability to perform firmware upgrade "code

loads" to tape drives included in its storage subsystem configuration. This code

load capability is manually accessed via the HSUTIL program in the

controller. The code load procedure requires that there be no tape in the drive.

In rare circumstances, HSUTIL in these controllers incorrectly determines that

there is a tape in the target drive, and refuses to perform the firmware upgrade.