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10. Check the green Drive activity LEDs and the amber Drive fault LEDs above
11. Use the DS4000 Storage Manager software to configure the new EV-DDMs.
12. Restore the data from backup to all the EV-DDMs.
Replacing the EV-DDMs one at a time
Use this procedure to replace all the EV-DDMs one at a time. You cannot use this
procedure on RAID 0 logical drives (use the procedure in "Replacing all EV-DDMs
at the same time" on page 116).
Note: If your storage subsystem has hot spares assigned, you might want to
Attention:
or reseating the EV-DDM CRU to allow it to properly spin down. Failure to do so
may cause undesired events.
To replace the EV-DDMs one at a time, perform the following steps:
118
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
enclosures, turn on the power-supply switches on the back of the storage
subsystem. You must turn on both power-supply switches to take advantage of
the redundant power supplies.
the new EV-DDM CRUs.
Make sure that the Drive activity LEDs are on and the Drive fault LEDs are off.
Note: The Drive fault LEDs might flash intermittently while the EV-DDMs spin
up.
v If the Drive activity LED is off, the EV-DDM CRU might not be installed
correctly. Remove the EV-DDM CRU, wait 30 seconds, and then reinstall it.
v If the Drive fault LED stays on or the Drive activity LED stays off, the new
EV-DDM might be faulty. See the DS4000 Storage Manager software for
problem determination.
See the DS4000 Storage Manager software online Help for detailed
instructions.
unassign the hot spares while you perform this procedure. If you do not,
reconstruction might start on the hot spare before you insert the new
EV-DDM. The data on the new EV-DDM is still rebuilt, but the process takes
longer for each EV-DDM. Remember to reassign the hot spares when you
are finished with this procedure.
After you remove a EV-DDM CRU, wait 70 seconds before replacing
1. Read the following information:
v "Replacing multiple EV-DDMs" on page 115, particularly the paragraphs that
discuss the differences between the two possible upgrade procedures
v Your software documentation regarding drive upgrades and installation
v The documentation that comes with the new EV-DDM
Read all precautionary notes, kit instructions, and other information. Kit
instructions often contain the most current information regarding the
EV-DDMs and their installation, plus upgrade or servicing procedures.
Compare the kit instructions with this procedure to determine if you need to
modify this procedure.
2. Use the DS4000 Storage Manager software to check the status of the unit.
Correct any problems that are reported.
3. Back up the data in the arrays and logical drives that are configured using the
drives that you are replacing.
Attention:
When you handle static-sensitive devices, take precautions to
avoid damage from static electricity. For details about handling static-sensitive
devices, see "Handling static-sensitive devices" on page 25.
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