Symantec NetBackup 5220, Hardware Troubleshooting Manual

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15.
If the fault persists, there is possibly a problem with the memory slot.
Contact technical support.
Disk status LED is red
The NetBackup 5220 contains eight disk bays. Each bay can hold one disk module,
which includes one disk carrier and one disk drive. The carrier and its disk drive are
labeled 0 to 7, from left to right. All drives are hot-swappable. Slot 7 is reserved as a
spare. Slots 0 to 6 are intended for use with RAID cards, forming a RAID 6 group.
Each module has two LEDs, one red and one green.

The green LED flashes when disk drive activity occurs and is solid green when
no activity occurs.
 A red LED indicates a fault.
Symptom
The disk status LED is red on one or more disk modules.
Location of the disk status LEDs