NEC Storage M100 Series User Manual page 272

User Guide
Table 10-1: Trouble in Disk Array Unit (Front Panel LED Status) (Contd.)
Condition
POWER LED (green) is
on and SERVICE LED
(orange) blinks at
intervals (on for 1
second and off for 1
second)
POWER LED (green) is
on and SERVICE LED
(orange) blinks at
intervals (on for 4
seconds and off for 8
seconds)
POWER LED (green)
blinks at intervals (on for
0.2 seconds and off for
0.2 seconds), and
SERVICE LED (orange)
is off
Release 6.0
Cause and Action
This indicates that the power-on sequence or download sequence of the
disk array unit is in progress.
The sequence will take several minutes to complete.
If SERVICE LED continues to blink for over 10 minutes, there may be a
failure.
This indicates that battery backup failed in the last power-off state. Files
may be corrupted. Restore those files using backup files.
This may occur because of the following causes. Address the
appropriate cause to remove the problem.
1. A backup device such as a flash memory was destroyed. Replace the
controller.
2. Battery backup was performed past the battery life span.
3. The disk array unit was continuously used or has been used at a
temperature higher than the predetermined temperature.
This is not a fault.
This indicates that the disk array unit can be turned off by performing
automatic flash because the host port is disconnecting for 5 minutes.
When the host port recovers, the unit returns to a normal state.
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Do not turn off the power or AC power while
SERVICE LED is blinking.
In the cases other than 1, the battery backup
retention time of the battery cannot be
guaranteed. It is necessary to replace the battery
due to its life span. Contact your sales or
maintenance service agent. (There is a charge
for battery exchange due to life span. For the
procedure to recover from this condition, refer to
Section 1.3.1.3: Notes on Powering On the Disk
Array System.
Chapter 10 Troubleshooting