Firmware updates
Attention: Save the storage subsystem profile before performing any controller or
ESM firmware upgrades. Save the storage subsystem profile and all configuration
(*.cfg) files to a server disk that will remain accessible in the event of a DS5100 and
DS5300 storage configuration failure. Do not save these files only to a LUN in the
DS5100 and DS5300.
In order to ensure the optimal operation of the DS5100 and DS5300 and its
attached storage expansion enclosures, the storage expansion enclosure ESM
firmware, the DS5100 and DS5300 controller firmware, the hard drive firmware, and
the NVSRAM (for controllers only) must be up to date. Go to the following Web site
to get the latest updates:
www.ibm.com/systems/support/storage/disk
Apply the necessary updates before configuring the storage subsystem arrays and
logical drives. Subscribe to My Support for automatic notifications of firmware or
Storage Manager software updates or any important information about the DS5100
and DS5300 (see “Receiving product updates and support notifications” on page 5).
Attention: Read the README file that is included in each firmware or DS
Storage Manager software package for any limitations, subsystem firmware
prerequisites, or download-sequence information. For example, the controller
firmware code might require the storage expansion enclosure ESM firmware to be
upgraded first to a particular version, or the controller firmware download might
require the halting of I/Os to the DS5100 and DS5300’s logical drives. Failure to
observe the limitations, prerequisites, and dependencies in the README file might
result in a loss of data access. See “Finding Storage Manager software, controller
firmware, and README files” on page xxviii to learn how to access the DS5100
and DS5300 README files on the Web.
Unless the README file contains special requirements for the sequence in which
you upgrade firmware, you should perform firmware upgrades in the following
sequence:
1. Drive firmware
2. Controller NVSRAM
3. Controller firmware
4. ESM firmware for the storage expansion enclosures
Troubleshooting the storage subsystem
The DS Storage Manager client software enables you to monitor the storage
subsystem, diagnose problems, and recover from failures. For best configuration
operation, run the DS Storage Manager client software continuously, and frequently
check the configuration status.
Use the following procedure to check the status of the storage subsystem. If a
problem has occurred, use the DS Storage Manager client software and the LEDs
on the storage subsystem to help locate a failed component.
1. If applicable, turn off the alarm.
2. If another fault occurs, the alarm sounds again. Use the DS Storage Manager
client software to print a storage subsystem profile.
142 IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User’s, and Maintenance Guide
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