Dot Hill Systems II 200 FC - Manual (Page 160)

B-14 SANnet II 200 FC, SATA, and SATA SE Array Installation, Operation, and Service Manual • March 2005
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SANscape CLI event log
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For expansion units, the RAID firmware event log
For more information about replacing the chassis, I/O module, or controller, refer to
the SANnet II Family FRU Installation Guide.
Caution – When you rotate or replace drives, make sure that:
- All I/O is stopped.
- The Periodic Drive Check Time setting in the firmware application is set to disabled
(this is the default setting). This prevents automatic drive rebuild, which is not
recommended for live systems or troubleshooting.
To disable the Periodic Drive Check Time:
1. From the Main Menu, choose view and edit Configuration parameters → Drive-side
SCSI Parameters → Periodic Drive Check Time.
A list of Periodic Drive Check Time intervals is displayed.
2. Select Disable.
A confirmation message is displayed.
3. Select Yes to confirm.
Caution – Whenever you are troubleshooting your array or replacing components,
there is an increased possibility of data loss. To prevent any possible data loss, back up
user data to another storage device prior to replacing a disk drive or any other
component.
Before you begin troubleshooting a JBOD or expansion unit, check the cables that
connect the host to the JBOD or expansion unit. Look for bent pins, loose wires, loose
cable shields, loose cable casing, and any FC cables with 90 degree or more bends in
them. If you find any of these conditions, replace the cable.
The Figure B-4 flowchart provides troubleshooting procedures specifically for JBODs
and expansion units. For additional troubleshooting flowcharts, see “Power Supply and
Fan Module” on page 8-11 and “Drive LEDs” on page 8-13.