IBM DCS3860, Installation, User'S, And Maintenance Manual

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Attention: Not following the software-recovery procedures can result in data loss.
In addition, always replace a failing component as soon as possible to minimize
additional failures that might occur and cause loss of data access.
Firmware updates
You must maintain the ESM firmware, controller firmware, drive firmware, and the
NVSRAM firmware up-to-date and know the prerequisites, update instructions,
download-sequence information, and host I/O restrictions.
Attention: Save the storage system profile before you perform any controller or
ESM firmware upgrades. Save the profile and all configuration (.cfg) files to a
server disk that will remain accessible in the event of a DCS3860 storage
configuration failure. Do not save these files only to a LUN in the storage system.
Go to http://www.ibm.com/servers/storage/support/disk/ to get the latest
updates.
Ensure that you read the readme files that are included with the firmware
packages for the most up-to-date information about firmware prerequisites,
firmware update instructions, download-sequence information, and host I/O
restrictions, if any. Apply the necessary updates before you configure the storage
system arrays and logical drives. Subscribe to My Support for automatic
notifications of firmware or Storage Manager software updates or any important
information about the DCS3860 storage systems (see “Receiving product updates
and support notifications” on page 5).
Attention: Failure to observe the limitations, prerequisites, sequences, and
dependencies in the readme file might result in a loss of data access.
Unless the readme file contains special requirements for the sequence in which you
upgrade firmware, perform firmware upgrades in the following sequence:
1. ESM firmware for the expansion enclosures
2. Controller firmware
3. Controller NVSRAM
4. Drive firmware
Troubleshooting the storage system
Run the IBM DS Storage Manager continuously, and frequently check the
configuration status.
IBM DS Storage Manager is the best way to monitor the storage system, diagnose a
problem, and recover from a hardware failure. Complete the following steps to
check the status of and identify a problem with the storage system. If a problem
has occurred, use the Storage Manager software and the LEDs on the storage
system to help locate a failed component.
1. Open the Subsystem Management window.
2. Click the Summary tab, and view the status of the storage system.
3.
If any storage system has a 'Needs Attention' status, click
Recovery Guru
on
the toolbar. Perform the procedure in the Recovery Guru to correct the
problem. The Recovery Guru might direct you to replace the failed component.
If so, go to step 4 on page 61.
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide