Save the storage subsystem profile before performing any controller or ESM
firmware upgrades. Save the storage subsystem profile and all *.cfg files to a
server disk that will remain accessible in the event of a DS4000 storage
configuration failure.
Note:
When you upgrade firmware, you must upgrade all client package
components to the same release level. For example, if you are upgrading
your controller firmware from version 5.x to version 6.x, you must also
upgrade your DS Storage Manager client to version 9.x or higher. If your
host system uses RDAC, upgrading controller firmware from version 5.x
to version 6.x might also require host software updates, such as RDAC
updates and HBA driver updates. Refer to the IBM DS4000 Web site for
detailed instructions.
4. Use the Storage Subsystem Profile or DS4000 Profile to verify that the following
functions are enabled:
v
For all DS4000 models, Media Scan should be enabled both at the controller
level and at the LUN level.
v
For all DS4000 models, the read/write cache should be enabled. In addition,
use the Storage Subsystem Profile to verify that cache is matched between
the controllers.
Web
pages
IBM maintains pages on the World Wide Web where you can get the latest
technical information and download device drivers and updates.
For DS4000 information, go to the following Web site:
www.ibm.com/servers/storage/support/disk/
For the latest information about operating system and HBA support, clustering
support, SAN fabric support, and DS Storage Manager feature support, see the
System Storage DS4000 System Storage Interoperation Center at the following
Web site:
www.ibm.com/systems/support/storage/config/ssic/index.jsp
Hardware
responsibilities
In addition to the Health Check steps described above, regular hardware inspection
and maintenance helps to support the optimal performance of your DS4000 storage
configuration. You should periodically inspect the fibre channel components of your
DS4000 storage configuration.
IBM suggests you follow these guidelines:
v
Maintain an up-to-date storage subsystem profile for your DS4000 storage
configuration. Save the profile to a server disk that will remain accessible in case
of a DS4000 storage configuration failure. Do not save the profile only to a LUN
in the DS4000 Storage Subsystem.
v
Develop a Change Management plan. The plan should include schedules for
updating subsystem firmware and server host software.
Note:
Some updates might require storage subsystem downtime.
v
Use IBM-approved fibre channel cables for all situations. Note in your
configuration documentation whether any cables are not IBM-approved.
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