Managing disk arrays – 360 Systems MAXX-2400SD User Manual

Page 99

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MAXX 2400 Owners Manual

Page 99

MANAGING DISK ARRAYS

The Image Server’s 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.

If up to two drive faults should occur, it should not cause data loss; but remember that the drive
array is degraded and no longer has fault tolerance. Hence, another disk failure will 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.

Error Notification and Repair
The Image Server will notify users in the event of a fault by flashing the front panel DRIVES light.
A failure condition will also be indicated in the Image Server GUI in the status bar, on the bottom
of the screen and highlighted in yellow ( Figure 41 ). A GPIO Output can be programmed to
activate upon a RAID or system fault. This can be used to activate a warning lamp or alarm. Refer
to Page 43 for more information on Mapping GPIO events. A drive fault can be trigged by a variety
of conditions. The first step in response to a flashing light 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.

Figure 41 - GUI Drive Fault Indication

The RAID Status window (Figure 44) 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;
• Rebuilding, indicated by "Rebuilding x%" on the Array Unit 0 status line.
• Verifying, indicated by "Verifying x%" on the Array Unit 0 status line.

“Rebuilding” is the process by which the array controller corrects data parity errors that may have
occurred because of power loss, incorrect shutdown or some other data error. Upon detection of a
parity error, the controller will automatically start the rebuilding process as a background task.
This task should not interfere with Image Server’s ability to record or play clips.

Parity errors may occur if the Image Server loses power, or is improperly shut off. No data will be
lost, but the parity reinitialization process may take several hours. NEVER use the rear panel

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