IBM System Storage DS3300, Installation, User'S, And Maintenance Manual

Page: 84 / 140

13. Verify the state of the LEDs on the newly inserted controller. See “Controller
LEDs” on page 52. You can also use the DS3000 Storage Manager
Subsystem Management window to identify any new faults. Do any storage
subsystems have a fault (Needs Attention) status?
v
Yes: Click Recovery Guru in the Subsystem Management window toolbar,
and complete the recovery procedure. If the problem remains, contact your
IBM technical-support representative.
v No: Go to step 14.
14. Use the DS3000 Storage Manager software to print a new storage subsystem
profile.
Replacing a controller
Use these instructions to replace a controller.
Attention: Make sure that both power-supply units are connected and
powered-on and no amber LEDs are lit. Make sure that the power LEDs on both
power-supply units are lit. If the status of either of the power-supply units is not
Optimal, replace that power supply before you proceed with the controller
replacement procedure.
To replace a controller in a DS3300, complete the following steps.
Attention:
v If you are replacing a failed controller with a replacement controller from IBM
Service, you will transfer the controller battery to the replacement controller. The
replacement controller contains a 512 MB DIMM; if the capacity of the DIMM in
the failed controller is larger than 512 MB, you will also transfer that DIMM to the
replacement controller. Transfer the DIMM and battery exactly as described in
this procedure; failure to remove and insert these items in the correct sequence
can damage the DIMM.
v In a single-controller DS3300, shut down the DS3300 before you remove the
controller.
1. Read the safety information that begins on page xi and “Best practices
guidelines” on page 6.
2. In a single-controller storage subsystem, shut down the storage subsystem
(see “Turning off the storage subsystem” on page 54 for the correct sequence
of steps); then, continue with step 4.
3. Use the DS3000 Storage Manager software to print a storage subsystem
profile. Move logical drive ownership to the other controller. If the controller that
you are replacing has failed but is still operating, move the failed controller to
the Offline state.
Attention: Never remove a controller unless the service action allowed LED
is lit. Doing so can result in a loss of data.
4. Locate the failed controller by checking the amber LEDs on the controllers in
the storage subsystem.
5. Is the service action allowed LED lit?
v Yes: Go to step 6 on page 67.
v
No: Another component might require attention before you can remove the
controller. Use the Recovery Guru in the DS3000 Subsystem Management
window to identify and correct any additional failures. If there are none,
proceed with step 6 on page 67 to replace the controller.
66
System Storage DS3300 Storage Subsystem: Installation, User’s, and Maintenance Guide