IBM DS3500 User Manual

Link fault LED (amber)
When this amber LED is lit, it indicates that the link through the SAS cable
is not successful.
Link up LED (green)
When this green LED is lit, it indicates that the link through the SAS cable
is successful.
OK to remove LED (blue)
This LED is supported only when the EXP3500 is attached to a DS3500
controller. Do not remove the ESM unless this blue LED is lit.
Fault LED (amber)
When this amber LED is lit, it indicates that the ESM has failed.
Power-on LED (green)
When this green LED is lit, it indicates that the ESM is receiving power.
Turning off the storage subsystem
The DS3500 is designed to run continuously. After you turn it on, do not turn it
off. Turn off the power only in the following situations:
v Instructions in a hardware or software procedure require that you turn off the
power.
v An IBM technical-support representative instructs you to turn off the power.
v A power outage or emergency situation occurs, see “Restoring power after an
unexpected shutdown” on page 98.
Attention: Except in an emergency, never turn off the power if any amber (needs
attention) LEDs are lit. Correct the fault before you turn off the power. Use the
Storage Manager software and the amber LEDs to check the overall status of the
DS3500. All LEDs should be green on the front of the storage subsystem. If they
are not, use the Storage Manager software to diagnose the problem so that the
DS3500 will power-on correctly later.
(L003)
1 2
ESM
Link fault LED
(amber)
Link up LED
(green)
OK to remove LED
(blue)
Fault LED
(amber)
Power-on LED
(green)
Link fault LED
(amber)
Link up LED
(green)
Seven-segment
numeric display
Figure 87. ESM LEDs
Chapter 4. Operating the storage subsystem and storage enclosure 95

IBM DS3500 Specifications

General

Brand	IBM
Model	DS3500
Category	Storage
Language	English