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Notes:
1. You can only monitor storage subsystems that are within the management
domain of the storage-management software.
2. If you have not installed the DS4000 Storage Manager Event Monitor service as
part of the storage-management software installation, the DS4000 Storage
Manager Enterprise Management window must remain open. (If you close the
window, you will not receive any alert notifications from the managed storage
subsystems.)
For more information, see the Enterprise Management online Help.
Important: Refer to the IBM System Storage DS4000 Storage Manager 9.16
Installation and Support Guide for the appropriate operating system for
instructions on how to install the DS4000 Storage Manager 9.16 host
software.
In addition, to download the latest version of the DS4000 Storage
Manager host software, the DS4200 Express Storage Subsystem
controller firmware and NVSRAM, and the latest DS4000 ESM
firmware, go to the following Web site:
www.ibm.com/servers/storage/support/disk/
The DS4000 Storage Manager client provides the best way to diagnose and repair
storage-server failures. The software can help you do the following:
v Determine the nature of the failure
v Locate the failed component
v Determine the recovery procedures to repair the failure
Although the storage subsystem has Needs Attention LEDs, these LEDs do not
necessarily indicate which component has failed or needs to be replaced, or which
type of recovery procedure you must perform. In some cases (such as in the case
of a hard disk drive exceeding its PFAs), the Needs Attention LED does not turn on.
Only the DS4000 Storage Manager client can detect the failure.
For example, the recovery procedure for a Predictive Failure Analysis
(impending drive failure) on a drive varies depending on the drive status (hot spare,
unassigned, RAID level, current logical drive status, and so on). Depending on the
circumstances, a PFA flag on a drive can indicate a high risk of data loss (if the
drive is in a RAID 0 volume) or a minimal risk (if the drive is unassigned). Only the
DS4000 Storage Manager client can identify the risk level and provide the
necessary recovery procedures.
Note: For PFA flags, the General-system-error LED and Drive Needs Attention
LEDs do not turn on, so checking the LEDs will not notify you of the failure,
even if the risk of data loss is high.
Recovering from a storage-server failure might require you to perform procedures
other than replacing the component (such as backing up the logical drive). The
DS4000 Storage Manager client gives these procedures.
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, causing loss of data access.
Chapter 4. Operating the storage subsystem
®
(PFA) flag
85
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