Chapter 1 Tray Overviews 15

IOM LEDs on the Sun StorageTek 2501 Array

FIGURE1-13 Locationsof the IOM LEDs
Service Action LEDs
Each controller,power-fan assembly, IOM, and disk drive has a Service Action
Allowed LED. The Service Action Allowed LED indicates when you can remove a
component safely.See the “LEDs on the Rear of the Trays” section on page 1-11 for
the locations and descriptions of the Service Action Allowed LEDs on a controller
tray and a drive expansion tray,and see “LEDs on the Disk Drives” on page 1-18 for
disk drive Service Allowed LEDs.
TABLE1-5 Descriptions of the IOM LEDs
Location LED Color On Off
1 IOMLink Fault Amber A link error occurred. No errors have occurred.
2 IOM Link Green The link is active. A link error occurred.
3
Service Action
Allowed
Blue The IOM can be removed
fromthe drive expansion tray.
The IOM cannot be
removed from the drive
expansion tray.
4
Service Action
Required
(Fault)
Amber Afault existswithin the IOM. Normal condition
5Power Green Power is present in the drive
expansion tray.
No power is applied to the
drive expansion tray.