IBM totalstorage fastt100, Installation, User And Maintenance Manual, Page: 93 / 160

Attention: Not following the software-recovery procedures can result in data loss.
Checking the LEDs
The LEDs display the status of the storage server and components. Green LEDs
indicate a normal operating status; amber LEDs indicate a possible failure.
It is important to check all the LEDs on the front and back of the storage server
when you turn on the power. In addition to checking for faults, you can use the
LEDs on the front of the storage server to determine if the drives are responding to
I/O transmissions from the host.
For information about the LEDs on the front of the storage server, see:
v Figure 50
v
Table 10
For information about the LEDs on the back of the storage server, see:
v
Figure 52 on page 66
v Table 11 on page 64
v
Table 12 on page 66
Table 10. Storage server LEDs (front)
LED Color Operating states
1
Drive active Green
v
On - Normal operation.
v
Flashing - The drive is reading or writing data.
v
Flashing every 5 seconds - The drive has not
spun up or the drive is bad.
v
Off - One of the following situations has occurred:
– The storage server has no power.
– The drive is not properly seated in the storage
server.
Drive fault Amber
v
Off - Normal operation.
v
Flashing - The Storage Manager client is locating
a drive, logical drive, or storage subsystem.
v On - The drive has failed, or a user failed the drive.
Activity LED
Fault LED
General system
error LED
Power-on LED
Latch Tray handle
f10ug053
Figure 50. Storage server LEDs (front)
Chapter 4. Operating the storage server
63