42
2470HD Time Delay
Managing the RAID Disk Array
The Disk Array Configuration Utility provides tools for monitoring and managing the disk array.
Monitoring and troubleshooting programs automatically check the array, report problems and provide
access to RAID status information and service options.
A single drive fault should not cause data loss; but remember: the drive array is degraded and no
longer has storage redundancy. Hence, another disk failure may cause a complete loss of data and
system failure. After a drive failure it is strongly recommended that at the earliest time diagnostics be
performed, and the server be taken off line while the RAID array is rebuilt.
Error Notification and Repair
The Time Delay will notify users in the event of a fault by flashing the front panel
DRIVES
light. A
flashing
DRIVES
light can be triggered by a variety of conditions. A failure condition will also be
indicated in the GUI in the status bar, on the bottom of the screen and highlighted in yellow as shown
below. A GPIO Output is available that can activate a warning lamp or alarm upon a RAID or system
fault. Refer to page 29 for more information on GPIO interfacing. A drive fault can be trigged by a
variety of conditions. The first step in response to an error warning is to open the RAID
CHECK
STATUS
window from the On-Screen Start Menu. Click
Start > System > RAID Status
to launch
the Array Configuration Utility.
GUI Drive Fault Indication
The
RAID Maintenance
window (Figure 5, page 47) displays the current status of the RAID controller
and all disks connected to the RAID system. On inspection, you will find the array in one of the
following states:
•
OK
, indicated by "OK" for Array Unit 0 and all Ports (drives);
•
Initializing
, indicated by "Initializing" on the Array Unit 0 status line;
•
Degraded
, indicated by "Degraded" on the Array Unit 0 status line;
•
Verifying
, indicated by "Verifying x%" on the Array Unit 0 status line;
•
Rebuilding
, indicated by "Rebuilding x%" on the Array Unit 0 status line.
