IBM TotalStorage FAStT700, User Manual

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5. Using Figure 40 as a guide, check the storage server indicator lights on the fan.
Fan
Power
Green light indicates power is on.
Normal status: On
Problem status: Off
Power supply
Amber light indicates a power supply fault.
Normal status: Off
Problem status: On
Fan
Amber light indicates a fan fault.
Normal status: Off
Problem status: On
Controller
Amber light indicates a controller fault.
Normal status: Off
Problem status: On
Fast Write Cache
Green light indicates data in cache.
v
When the storage server fan is operating properly, the green power indicator
is lit and the amber fan indicator is off.
v
If the amber fan indicator is lit or the green power indicator remains off, make
sure that the storage server fan is seated securely in the slot and that the
lever is snapped into place. Check the storage server fan or the fan and
communications module status.
v
If the storage server fan indicator remains on, it might indicate a problem with
the new storage server fan or the fan and communications module (both
components share the same indicator light). Replace the storage server fan
with a spare, if available. Otherwise, turn off the FAStT700 Storage Server to
prevent it from overheating until you can replace the fan.
6. Replace the FAStT700 Storage Server bezel, as shown in Figure 21 on
page 17.
Fan and communications module
The fan and communications module is a single, removable unit containing two
cooling fans and two Ethernet ports. This module plugs into a slot at the center
back of the FAStT700 Storage Server, just above the power supplies (see Figure 42
on page 48). It has a locking lever and a pull handle for securing and removing the
fan and communications module. The module contains dual fans that provide a
redundant cooling system to both power supplies. If one fan within the module fails,
the other continues to operate. A single fan provides sufficient air circulation to
prevent the power supplies from overheating until you can replace the entire fan
and communications module.
Figure 40. Storage server indicator lights
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FAStT700 Fibre Channel Storage Server: User’s Guide