IBM TotalStorage FAStT EXP700, Installation, User'S, And Maintenance Manual

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v The Failed Unconfigured Drive icon ( ) displayed for drive slots that
contain drives.
v
The Failed Configured Drive icon ( ) displayed for drive slots that contain
drives.
10. Restore I/O activity to the DS4000 storage server.
11. After you have completed the ESM upgrade process, you may be required to
return the original DS4000 EXP700 1740 ESMs (FRU 19K1287) to IBM. Refer
to the separate instructions included with the upgrade kit for return processing
information for the DS4000 EXP700 ESMs you are replacing.
Hot-case ESM upgrade procedure
In the hot-case ESM upgrade procedure, you upgrade the DS4000 EXP700 ESMs
while the storage subsystem remains powered on.
Note: It is recommended that you schedule the hot-case ESM upgrade during a
non-peak (low-usage) I/O period for the following reasons:
v The DS4000 storage server drive loops/channels will be disturbed with FC
Loop Initialization events every time the ESM is replaced.
v One of the drive loops in the redundant drive loop will be down during the
upgrade, reducing the maximum data bandwidth to the drives by one-half.
Attention: The hot-case ESM upgrade procedure requires that both loops (drive
channels) in the redundant drive loop that contains the DS4000 EXP700s that you
are upgrading be in an optimal state. If you perform the upgrade process with one
drive loop (drive channel) in non-optimal state, your arrays might fail, causing loss
of data access and possibly loss of data. If you not sure that your drive loops are
optimal, or if your environment allows you to power down the storage subsystem in
a non-emergency situation, it is recommended that you use the “Cold-case ESM
upgrade procedure” on page 86 instead of the hot-case ESM upgrade procedure.
Contact IBM support for help if required.
Note: You must perform the hot-case upgrade procedure one redundant drive loop
at a time.
Attention: If you are not upgrading all of the DS4000 EXP700s in the redundant
drive loop, or if you are upgrading additional DS4000 EXP700s in redundant drive
loop that includes both DS4000 EXP700s and DS4000 EXP710s, you must follow
the intermixing requirements for drive loops that include both DS4000 EXP700s and
DS4000 EXP710s. See “Intermixing DS4000 EXP700s and DS4000 EXP710s in the
same loop” on page 44. Failure to do so can result in drive loop performance
problems due to excessive time-outs and LIPs and possibly failed drives.
1. Before you begin the upgrade procedure, perform a full system backup and
save the storage subsystem profile.
2. Upgrade the DS4000 Storage Manager client to version 9.1 or later.
3. Upgrade the ESM firmware for all DS4000 EXP700s to version 9326 or later.
4. Upgrade the controller firmware to version 6.10.xx.xx or later.
Attention: No I/O activity can be present during the firmware upgrade from
version 5.4x.xx.xx or earlier to version 6.10.xx.xx or later.
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IBM TotalStorage DS4000 EXP700 and EXP710 Storage Expansion Enclosures: Installation, User’s, and Maintenance Guide