Sun Storage 7000 Unified Storage System: SAS Interconnect Module (SIM) failure with blue LED

Asset ID:	1-72-1163816.1
Update Date:	2011-05-19
Keywords:

Solution Type Problem Resolution Sure

Solution 1163816.1 : Sun Storage 7000 Unified Storage System: SAS Interconnect Module (SIM) failure with blue LED

Applies to:

Sun Storage 7110 Unified Storage System - Version: Not Applicable and later   [Release: N/A and later ]
Sun Storage 7210 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Storage 7310 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Sun Storage 7410 Unified Storage System - Version: Not Applicable to Not Applicable   [Release: N/A to N/A]
Information in this document applies to any platform.

Symptoms

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Blue LED lit on the failed SIM (visible from the rear of the chassis).
One or more JBODs with less than two paths listed in BUI 'Maintenance->Hardware' view.
Alert, log message or active problem related to the loss of a path:

Alert example: The component 'SIM (0|1)' has been removed from chassis 'XYZ'

Changes

N/A

Cause

The SIM failure is caused by a missed heartbeat signal. The SIM that detects the heartbeat timeout
takes the action of disabling it's peer (assuming that it is hung or otherwise non-functional).

See CR 6803801 for more details. Sun engineering has very strong evidence
to suggest that upgrading the SIM firmware to 3R24 resolves this issue.

See also FAB 1021661.1 (J4400 SIM cards randomly failing due to heartbeat timeout)

Solution

Steps to follow:

1. Physically re-seat the SIM module. This item is hot-pluggable, and as far
    as the Appliance is concerned, it is not present, so it is safe to re-seat.

2. Upgrade system software to 2010.Q1 or later.

      For installing Sun Storage 7000 Software Update 2010.Q1.1.0 or later, the Release Notes can be found here:

          http://wikis.sun.com/display/FishWorks/ak-2010.02.09.1.0+Release+Notes

      and the release itself is linked from the Software Updates page:

          http://wikis.sun.com/display/FishWorks/Software+Updates

3. Wait for the SIM firmware update to complete. If there's no progress monitor available, allow 15 minutes per JBOD.

4. Navigate in the BUI to Maintenance->Problems. Select any path faults, if present. Click the 'Mark Repaired' button.

It is possible to lose access to your storage pool for the duration of the SIM failure, which in turn could cause a reboot and/or failure.
This would generally only happen if incorrectly cabled (i.e. no alternate path available), or in the case of multiple SIM failures.

NOTE: Under no circumstances should you attempt to update the SIM firmware
            or anything on the appliance other than the system software without the
            direct involvement of Technical Support.

Additional Resources:

Appliance help under Installation for diagrams of correct cabling for 7310 and 7410 systems.
Appliance help under Maintenance:System:Updates for software upgrade procedure and related information.
Appliance help under Maintenance:Problems for help with the Fault Management (FMA) subsystem.

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