Seagate 73Gb drives are giving false errors on the Sunfire[TM] and SPARC(R) Enterprise T2000 leading to unecessary part replacements

Asset ID:	1-72-1019281.1
Update Date:	2017-10-05
Keywords:

Solution Type Problem Resolution Sure

Solution 1019281.1 : Seagate 73Gb drives are giving false errors on the Sunfire[TM] and SPARC(R) Enterprise T2000 leading to unecessary part replacements

Applies to:

Sun Fire T2000 Server - Version All Versions and later
All Platforms

Symptoms

Spurious SCSI transport warning messages appear after OS install. This only occurs on the following drive: 73GB SEAGATE PN: 9Y4066-134 MODEL: ST973401SS SUN BASE PN: 390-0213-04 SUN FRU ASSY PN: 540-6611-01

Cause

SCSI transport warning messages appear after installing the operating system. If an customer sees the following after installing the operating system, there is nothing wrong with the Sun Fire[TM] T2000, and it will function properly:

scsi: WARNING: /pci@780/pci@0/pci@9/scsi@0/sd@0,0 (sd1):
       SCSI transport failed: reason 'reset': retrying command
scsi: WARNING: /pci@780/pci@0/pci@9/scsi@0/sd@0,0 (sd1):
       Error for Command: write(10)               Error Level: Retryable
scsi: Requested Block: XXXXXXX                  Error Block: XXXXXXXX
scsi: Vendor: SEAGATE                            Serial Number: XXXXXXXXXX
scsi: Sense Key: Unit Attention
scsi: ASC: 0x29 (scsi bus reset occurred), ASCQ: 0x2, FRU: 0x2
scsi: WARNING: /pci@780/pci@0/pci@9/scsi@0/sd@0,0 (sd1):
       Error for Command: write(10)               Error Level: Retryable
scsi: Requested Block: XXXXXXXX                  Error Block: XXXXXXXX
scsi: Vendor: SEAGATE                            Serial Number: XXXXXXXX
scsi: Sense Key: Unit Attention
scsi: ASC: 0x29 (scsi bus reset occurred), ASCQ: 0x2, FRU: 0x2

Solution

Resolution
Ignore warning messages

This warning is caused by an extra "Unit Attention" frame sent by the HBA after very large files are written to the disk, and again, there is nothing wrong with the T2000 system or the Seagate HDD.  This only occurs on the following HDDs:
73GB SEAGATE PN: 9Y4066-134 MODEL: ST973401SS
SUN BASE PN: 390-0213-04  SUN FRU ASSY PN: 540-6611-01

Relief/Workaround
Ignore these messages

Product
Sun Fire T2000
SPARC Enterprise T2000

Attachments

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