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SAS shelf module shows error with "SAS expander error for SAS shelf electronics"

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Applies to

  • I/O module (IOM)
  • DS460C
  • DS212C
  • DS224C
  • DS4246
  • DS2246
  • DS4243

Issue

  • A failed communication alert with SAS module within shelf - self correcting.
  • The same messages appear on all IOM3/IOM6/IOM12 modules of the SAS shelf.

Example:

The initial issue:
Tue Apr  7 08:00:09 CST [:ses.status.ModuleError:CRITICAL]: DS4243 (S/N SHU0954293XXXXX) shelf 0 on channel 0a SAS expander error for SAS shelf electronics 1: communication error. This module is on the rear side of the shelf, at the top center, on shelf module A. 
 
The issue correcting itself:
Tue Apr  7 08:00:30 CST [:ses.status.ModuleInfo:info]: DS4243 (S/N SHU0954293XXXXX) shelf 0 on channel 0a SAS expander information for SAS shelf electronics 1: normal status.
  • Enclosure status from ASUPs:

Enclosure Status: non-critical
Channel: 0a
Shelf: 0
Shelf Type: DS212-12
Product Serial Number: SHJHU2240000800
Module Type: IOM12E

Enclosure:
Element Status         Status Bytes  Status Descriptions
  1: OK                01,00,02,00   FAIL

Vendor Unique Element 83-IOM12E: (SAS)
Element Status         Status Bytes  Status Descriptions
  1 [IOM12E A]    : NONCRITICAL       03,09,00,20   SHELF ID DELTA, MASTER, RESERVED
  2 [IOM12E B]    : NONCRITICAL       03,01,00,20   SHELF ID DELTA, RESERVED

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