ATTO Technology ExpressSAS H6F0 Troubleshooting Manual - Page 5
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The controller driver may not be properly installed. Please refer to the controller
Installation and Operations manual for instructions on installing your OS driver.
The firmware and driver may not be at compatible revision levels. The drivers are
updated more frequently than the firmware, therefore the revision levels are
seldom the same. There may be an occasion where the latest driver also
requires a firmware update. Verify from the web site that the latest firmware and
driver version are being used. The firmware version can be viewed when the
controller is detected during the computer's BIOS scan. The driver version can
be verified from within the Device Manager.
The ExpressSAS RAID controller is detected by the operating system, it detects
some of the connected devices, but does not detect all of the connected devices.
Verify the SAS/SATA devices are powered on.
Verify the drives are mapped to the controller correctly. You may need to
execute the 'automap' command to remap the drives. This can be done in the
ATTO Configuration Tool or the controller utilities (CTRL-Z).
Check cable integrity. Check the cables for solid connections. Make sure they
are snapped in. Inspect cable ends for bent pins.
Try attaching SAS/SATA devices one at a time with different cables, adding
drives and cables until the problem occurs. This will help pinpoint the device or
cable causing the problem.
Watch the LED indicators on the SAS/SATA devices before, during, and after
startup. Drive lights should also flash at startup as the SAS/SATA bus is
scanned. This may give a clue as to the root cause of the issue.
If there is an Expander in the Array verify the following:
Zoning: Verify the Expander(s) are zoned properly so that the
ExpressSAS Raid card and the SAS/SATA drives have access to one
Page 5 of 9
Atto Technology, Inc.
June 6, 2007