Dot Hill Systems RAIDCore, User Manual

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106 Chapter 7 Troubleshooting
Warning Messages: POST Screen
The POST screen is one of the first screens to appear during the system’s boot sequence. If the system’s arrays
were in Normal or Ready state prior to a system boot, the boot sequence continues normally to the operating
system.
But, if an array is in Critical or Offline state, or if specific options at Controller Options were changed previously
at the BIOS Configuration Utility, the warning messages described in Table 45 appear during the boot sequence.
Table 44 The BIOS Configuration Utility Does Not Display
Possible Causes Corrective Actions
The controller mode is set
incorrectly in the system
BIOS Set the system BIOS to the correct SATA setting [or equivalent].
Table 45 Warning Messages: POST Screen
Warning Message Corrective Action
WARNING:
Found arrays
that are
Critical
[or equivalent]
This warning message appears when at least one array is in a Critical state and Toggle
Pause if Critical is set to ON at the BIOS Configuration Utility.
Press
CTRL
+
R
to enter into the BIOS Configuration Utility to investigate the cause of the
Critical array. Check for the following:
• Whether a disk in the array has failed or has gone offline/missing. Check the disk state
at the Disks field.
The Critical state of an array depends on the RAID level of the array and the number of
disks that have failed:
• For an array at RAID 1 or RAID 5, a single disk failure causes a Critical state.
• For an array at RAID 10, the failure of a disk in each of the mirror sets creates a Critical
state for the RAID 10. (The failure of two disks in the same mirror set creates a Offline
state for the RAID 10).
NOTE:
The Critical state applies only to redundant arrays. The failure of a single
disk in an array at a Volume or RAID 0 RAID level causes the array to change to an
Offline state.
If an array is Critical (even a bootable array), the system can continue through the boot
process to the operating system. When RAIDConsole is accessible, restore the Critical
array by assigning a dedicated or global spare to it, or by replacing a failed disk and then
restoring the array.