Chapter 10: Solving Problems
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65
If copyback is enabled, data is moved back to its original location once the controller detects
that the failed drive has been replaced.
Disk Drive Failure in a RAID 0 Array
Because RAID 0 volumes do not include redundancy, if a disk drive fails in a RAID 0 array, the
data can’t be recovered.
Correct the cause of the failure or replace the failed disk drives. Then, restore your data (if
available).
Multiple Failures in the Same Array
Except in RAID 6 and RAID 60 arrays (see
page 74
), if more than one disk drive fails at the
same time in the same array, the data normally can’t be recovered.
You
may
be able to recover the data by forcing the logical drive online or by recreating the
logical drive without the initialization step. You can use the BIOS utility, ACU (see
page 61
),
the command-line utility, ARCCONF, or Adaptec Storage Manager. For more information,
refer to the
Adaptec RAID Controller Command Line Interface User’s Guide
and the
Adaptec.
Storage Manager User’s Guide
.
Note:
In some instances, RAID 10 and RAID 50 arrays
may
survive multiple disk drive failures,
depending on which disk drives fail.
Resetting the Controller
This section explains how to reset (or
Mode 0
flash
) your Adaptec RAID controller. You may
want to do this if the controller becomes inoperable, or if a firmware upgrade is unsuccessful.
To reset your Adaptec RAID controller:
1
Download the firmware version currently installed on your controller from
www.adaptec.com
2
Extract the downloaded files to a folder on your local hard drive (for example,
C:\Download\Drivers).
3
Create a bootable MS–DOS floppy disk and copy the AFU.exe file to it. Copy the first
firmware image to the same floppy disk.
4
Create additional bootable MS–DOS floppy disks and copy each additional firmware
image to its own floppy disk.
5
Power off your computer, disconnect the power cord, then open the cabinet following the
manufacturer’s instructions.
6
Disconnect all cables from the controller, then attach a shorting jumper to the Mode 0
flash connector. (To locate the Mode 0 flash connector on your Adaptec RAID controller,
see the figures in
About Your RAID Controller
on page 16
.)
7
Reconnect the power cord, power on your computer, then boot to the floppy disk
containing the AFU.exe file (see
Step 3
).
8
At the prompt, type
a:\afu update /c x
where
x
is the controller number.