IBM TotalStorage DS4000 EXP700 Installation, User's, And Maintenance Manual page 119

Note: Correct any faults before you turn off the power to the storage
subsystem using the proper troubleshooting or servicing procedures.
This will help ensure that the storage expansion enclosures will operate
correctly after the upgrade.
6. Stop the applications in the server and then power down your storage
subsystem.
Note: Power down the DS4000 storage server first and then power down the
storage expansion enclosures. For more information, see the
Installation, User's, and Maintenance Guide for your DS4000 storage
server.
7. Whether you are upgrading one or multiple DS4000 EXP700s in a drive loop,
complete the disconnection, upgrade, and reconnection process described in
the following steps for each storage expansion enclosure before upgrading the
next storage expansion enclosure. Disconnecting, upgrading, and reconnecting
one DS4000 EXP700 at time greatly reduces the possibility of making a fibre
channel cabling error.
Note: Before upgrading the ESMs, review the guidelines in "Handling
static-sensitive devices" on page 18.
a. Disconnect all fibre channel cables from the left ESM in the first storage
expansion enclosure that you will upgrade.
b. Replace the left ESM with the upgrade ESM CRU that you received in the
DS4000 EXP700 Models 1RU/1RX Switched-ESM Option Upgrade Kit.
Follow the steps for replacing an ESM in "Replacing a failed hot-swap
ESM" on page 70.
c. Reconnect the fibre channel cables to the upgraded ESM in the first
storage expansion enclosure.
d. Repeat steps a through c for the right ESM in the first storage expansion
enclosure that you will upgrade.
e. Replace the DS4000 EXP700 bezel with the new bezel you received in the
DS4000 EXP700 Models 1RU/1RX Switched-ESM Option Upgrade Kit.
f. Repeat steps a through e for each DS4000 EXP700 that you are upgrading.
Complete the process for each DS4000 EXP700 before you continue with
the next storage expansion enclosure.
8. Power on your storage subsystem. Use the LEDs to verify that the DS4000
configuration is operating normally. Correct any Fault LED errors and verify
that the ESM port bypass LEDs are not lit (if they are, remove the fibre
channel cables and the SFPs and reinsert them).
Note: Power up the storage expansion enclosures first and then power up the
DS4000 storage server. For more information, see the Installation,
User's, and Maintenance Guide for your DS4000 storage server.
9. Use the Storage Manager client Subsystem Management window to verify that
the DS4000 storage server configuration is in an optimal state and that no
ESM Redundancy Lost errors or drive errors are being reported. Use the
Recovery Guru function in the Storage Manager client Subsystem
Management window for information on how to fix any non-optimal conditions.
If you experience any of the following drive failure conditions, call IBM support
for help:
v The Empty Drive Slot icon (
Appendix B. Upgrading ESMs with the DS4000 EXP700 Models 1RU/1RX Switched-ESM Option Upgrade Kit
) displayed for drive slots that contain drives.
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