360 Systems MAXX-1000SD - Manual (Page 98)

Page 98 MAXX Owner’s Manual
The RAID Status window (Figure 23) 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.
“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 initialization 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 re-initialization process may take several hours. NEVER use the rear
panel power supply switch to shutdown the Image Server. Shut down the system only by
momentarily pressing the front panel power button or selecting Start > Shutdown >
Shutdown
from the graphic user interface.
Note that in some cases the power may not automatically shut off after a Shutdown is executed.
When the front panel LED indicators start flashing in response to the Shutdown command, the
file system has been successfully closed and it is safe to force the power off by holding the
power switch in for 4 seconds.
A degraded array with a drive listed as “Not In Service” or “Inaccessible” is usually indicative of
a permanent drive error, typically a single disk or cable failure, but redundant data will allow
normal operations to continue. You may first try to rebuild the array with the existing drive still
installed. If the array continues to indicate a failed drive, replace the drive and then rebuild the
array. A hard disk array must be repaired using exactly the same drive model and capacity as
other drives in the array. Because specific drive models become unavailable as time goes on,
360 Systems recommends that maintenance spares be purchased at the same time as the Image
Server.