Table 11. LED - Dual path LFF disk drive carrier modules - top panel
State (Amber) Status
Off Normal
Short blink (1 sec) Identify
On Fault - A fault has been detected or a service action
is required.
Long blink (3 secs) Rebuild
The replacement procedure should be completed within an absolute maximum of 3 minutes. For
additional information about LFF disk LED behavior, see the “Disk drive carrier module LED” on page 48
section.
Controller channel fan module
The controller channel fan module supplements the system fans by circulating airflow within the
enclosure controller channel, and providing cooling for the IOMs. The replacement procedure should be
completed within an absolute maximum of three minutes.
Figure 20. LEDs: Controller channel fan module - top panel
22
IBM Cloud Object Storage System: Medium/Large J11/J12 Disk Enclosure Hardware Installation and
Maintenance Manual