Chapter 10: Solving Problems ● 63If copyback is enabled, data is moved back to its original location once the controller detectsthat the failed drive has been replaced.Disk Drive Failure in a RAID 0 ArrayBecause RAID 0 volumes do not include redundancy, if a disk drive fails in a RAID 0 array, thedata can’t be recovered.Correct the cause of the failure or replace the failed disk drives. Then, restore your data (ifavailable).Multiple Failures in the Same ArrayExcept in RAID 6 and RAID 60 arrays (see page 72), if more than one disk drive fails at thesame 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 thelogical drive without the initialization step. You can use the BIOS utility, ACU (see page 59),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 ControllerThis section explains how to reset (or Mode 0 flash) your Adaptec RAID controller. You maywant 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 fromwww.adaptec.com2 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 firstfirmware image to the same floppy disk.4 Create additional bootable MS–DOS floppy disks and copy each additional firmwareimage to its own floppy disk.5 Power off your computer, disconnect the power cord, then open the cabinet following themanufacturer’s instructions.6 Disconnect all cables from the controller, then attach a shorting jumper to the Mode 0flash connector. (To locate the Mode 0 flash connector on your Adaptec RAID controller,see the figures in About Your RAID Controller on page 15.)7 Reconnect the power cord, power on your computer, then boot to the floppy diskcontaining the AFU.exe file (see Step 3).8 At the prompt, type a:\afu update /c xwhere x is the controller number.
