Sun ZFS Storage 7420
 
Oracle ZFS Storage ZS5-2
 
Oracle ZFS Storage ZS3-2
 
Oracle ZFS Storage ZS4-4
 
Oracle ZFS Storage ZS5-4
 
Oracle ZFS Storage ZS3-4
 
Sun ZFS Storage 7120
 
Sun ZFS Storage 7320
 
Oracle ZFS Storage ZS3-BA
 

PLA-Support>Sun Systems>DISK>ZFS Storage>SN-DK: 7xxx NAS
 

In this Document

Purpose

Scope

Details

References

Applies to:

Purpose

Provide additional information for message ID: SAS-8000-7H

Scope

Details

Type: Fault

fault.io.sas.hba.unbalanced-depth

Severity: Minor

Description

The chain of storage enclosures connected to an HBA receptacle is longer than chains in an alternate path.  Too many cables are attached to same sas expander. One or more cables is redundant or incorrect 

Automated Response

None

Impact

Degradation in service due to subsystem resources removed from operation. Unbalanced storage enclosure chain depths may cause degraded system performance.

Suggested Action for System Administrator

Prior to submitting a service request the storage/system administrator should perform the following SAS cable check:

• Utilize the ZFS Maintenance BUI to identify the faulty SAS interface.
• Review cabling diagrams in the online help or refer to the Quick Setup poster that shipped with the product. Also available is the Oracle ZFS Storage Appliance Installation Guide, located on the Oracle Technical Network documentation site.
• Correct the cabling problem.
• Verify via the Maintenance BUI the active fault has cleared
• If the fault has cleared returned the ZFS appliance to normal operation
• If the fault persists refer to the following document for the latest procedures for displaying event content in preparation for submitting a service request and applying any post-repair actions that may be required

PSH Procedural Article for Solaris FMA-Based Diagnosis (Doc ID 1173733.1)

***Checked for relevance on 25-MAY-2018***

References

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