No LED seen on installed disk
Applies to
- FAS systems
 - AFF systems
 
Issue
- After adding a new disk shelf to the system, one of the disks has no LED lit , although the below two conditions are met:
 
- The disk is detected normally by ONTAP and the status is normal from "sysconfig -a" output as shown below:
 
Cluster::> run -node <node-name> -command sysconfig -a
04.21: NETAPP   X477_TTCRE04TA07 NA01 3807.8GB 520B/sect (89X0A0PLXXXC)
04.22: NETAPP   X477_TTCRE04TA07 NA01 3807.8GB 520B/sect (89X0A0DYXXXC)
04.23: NETAPP   X477_TTCRE04TA07 NA01 3807.8GB 520B/sect (89N0A0LZXXXC)
2. The disk is seen in the spare pool after assigning it to a node:
Cluster::> run -node <node-name> -command sysconfig -r
Pool0 spare disks
RAID Disk    Device      HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
---------    ------      ------------- ---- ---- ---- ----- --------------    --------------
Spare disks for block checksum
spare       0b.04.20    0b    4   20  SA:A   0  FSAS  7200 3807816/7798408704 3815447/7814037168 
spare       0b.04.22    0b    4   22  SA:A   0  FSAS  7200 3807816/7798408704 3815447/7814037168 
spare       0b.04.23    0b    4   23  SA:A   0  FSAS  7200 3807816/7798408704 3815447/7814037168 
