Attention: Read the readme file that is included in each firmware or DS4000
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 DS4800’s logical drives. Failure to observe the
limitations, prerequisites, 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, you should perform firmware upgrades in the following sequence:
1. ESM firmware for the storage expansion enclosures
2. Controller firmware
3. Controller NVSRAM
4. Drive firmware
Troubleshooting the storage subsystem
The DS4000 Storage Manager client software enables you to monitor the storage
subsystem, diagnose problems, and recover from failures. For best configuration
operation, run the DS4000 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 DS4000 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 DS4000 Storage
Manager client software to print a storage subsystem profile.
3. Using the Enterprise Management window, view the status storage subsystem.
Do any components in the storage subsystem indicate Needs Attention?
v Yes – Go to step 4.
v No – All components are Optimal. Go to step 8 on page 118.
4. Open the Subsystem Management window, and display the Physical View for
the components in the storage subsystem.
5. View the status of the storage subsystem by selecting the View Storage
Subsystem button and expanding the Overall Component Information when
the Status window opens.
Using the Overall Component Information view, you can see the status of the
following components:
v Interconnect-battery unit and battery packs in the component
v SFPs
v Power supply-fans
v Temperature sensors
The
status for each component is either Optimal, Charging (applicable to
battery packs only), or Needs Attention.
6. Do any components have a Needs Attention status?
v Yes – Go to step 7 on page 118.
v No – All components are Optimal. Go to step 8 on page 118.
Chapter 4. Operating the storage subsystem 117
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