Note: I you are using a R348 SAS Controller be sure the controller is configured to
use the appropriate ports you need. This card can be configured to use all internal
connectors or one internal and one external.
Swap the devices and cables from the SAS bus that appears to be working with
the one having issues. If the issue follows the bus and there is an expander in
the Array, move on to next step. If there is no expander, replace the card.
If there is an Expander in the Array verify the following:
¾ Zoning: Verify the Expander(s) are zoned properly so that the
ExpressSAS Raid card and the SAS/SATA drives have access to one
another. If there are pre-existing zones setup, be sure to add the
ExpressSAS Raid to the zone.
If the issue follows the attached SAS devices, troubleshoot the attached
devices:
Verify the SAS 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 physical damage.
Try attaching SAS 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 devices before, during, and after startup.
Drive lights should also flash at startup as the SAS bus is scanned. This may
give a clue as to the root cause of the issue.
Æ The ExpressSAS RAID controller is detected by the operating system, it
detects
some of the connected devices on the SAS ports, but does not detect all of the
connected devices. The command dmesg can be used to see what devices are
detected on each SAS bus.
Verify the SAS 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 screwed down. Inspect cable ends for physical damage.
Try attaching SAS 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 devices before, during, and after startup.
Drive lights should also flash at startup as the SAS 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:
Page 3 of 7 ATTO Technology, Inc. June 6, 2007
(51 paginas)
(76 paginas)
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