Servicing Notes; Controller Status Indicator Lights - IBM TotalStorage FAStT700 User Manual

Attention:
the FAStT700 Storage Server, label controllers A and B with the white tape dots that
are included in the rack mounting assembly kit. To prevent data loss, the controllers
must be installed into their original location.
Fault-B
Amber light indicates
controller fault.
Normal status: Off
Problem status: On
Power
Green light indicates that
power is on.
Normal status: On
Problem status: Off
Figure 32. Controller status indicator lights

Servicing notes

Consider the following when servicing the controllers in the FAStT700 Storage
Server:
v The FAStT700 Storage Server supports two controller CRUs, which attach to
v You can hot swap or replace a failed controller while the FAStT700 Storage
v If cache mirroring is enabled in redundant controllers and one controller fails, the
v If you replace the controller CRU and still experience problems, the FAStT700
v When a controller CRU fails, the fault light on the affected controller is lit. For
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IBM TotalStorage FAStT700 Fibre Channel Storage Server: User's Guide
If you are removing both controllers (controller A and controller B) from
Controller status
indicator lights
hosts through Fibre Channel connections.
Server is in operation as long as the host has a Fibre Channel connection to the
functioning controller and is in a "passive" or "offline" status in the
storage-management software.
second controller assumes processing functions without data loss. However,
some or all data might be lost if cache mirroring is disabled and a failure occurs
before data is written from cache memory to disk.
Storage Server might have other defective components or connections. Check
the storage-management software for indications of other component failures.
more information about indicator lights, see "RAID controller indicator lights" on
page 23.
Heartbeat
Green light indicates that the
controller is working.
Normal status: On (blinking)
Problem status: On
Status
(8 lights including the Heartbeat)
Green lights indicate controller
status.
Reset switch
Controller A
Controller B