Asset ID:	1-77-1000500.1
Update Date:	2011-03-04
Keywords:

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Solution Type  Sun Alert Sure

Solution  1000500.1 :   Dual-Bus Sun StorEdge 3310 JBOD Configurations May Lose SCSI Termination in a Multi-Initiator Environment  


PreviouslyPublishedAs
200639

Product
Sun StorageTek 3310 SCSI Array

Bug Id
<SUNBUG: 4818874>

Date of Resolved Release
17-JUN-2004

Impact

Failover capability may be compromised when using the Sun StorEdge 3310 JBOD array in a multi-initiator environment.

Contributing Factors

This issue can occur with the following configurations :

• Sun StorEdge 3310 JBOD disk array in a dual-bus configuration

This issue only occurs in multi-initiator SCSI environments. (for example, in a Sun Cluster environment) when a host connected to the "IN" port loses power.

Notes: Sun StorEdge 3310 JBOD arrays in a single-bus configuration and Sun StorEdge 3310 RAID arrays are not affected.

The SE 3310 JBOD disk array relies on the cluster nodes to provide SCSI bus termination. As termination power is not supplied from the array's "IN" ports, if the system connected to these loses power, SCSI bus termination will be lost. This in turn may result in the remaining host losing access to the shared storage on that SCSI bus.

Symptoms

The symptoms for loss of SCSI bus termination will vary depending on the length of the SCSI bus, the number of devices connected to the bus, and the environment it is installed in.

Common errors for loss of termination include SCSI bus phase errors and devices dropping their transfer rates. In extreme cases, access to the devices may be lost completely.

Workaround

To work around the described issue, do not use the dual-bus SE 3310 array in a multi-initiator environment.

Resolution

All known cases of this issue have been addressed.

Dual-Bus Sun StorEdge 3310 JBOD configurations in a multi-initiator environment is supported with the -02 revision of the SE3310 JBOD I/O module, Sun part number 370-5396.

Modification History
Date: 17-JUN-2004

• State: Resolved
• Updated Resolution section

Previously Published As
101223
Internal Comments

The SE3310 JBOD I/O module, part 370-5396 has been modified to provide SCSI bus termination power on all ports. This modification takes effect from the -02 revision of these boards.

Internal Contributor/submitter
[email protected]

Internal Eng Business Unit Group
OP/N1 RPE (Operating Platforms/N1 Revenue Product Engin.)

Internal Eng Responsible Engineer
[email protected]

Internal Services Knowledge Engineer
[email protected]

Internal Escalation ID
544126

Internal Sun Alert Kasp Legacy ID
101223, 52687 (Sun Alert)

Internal Sun Alert & FAB Admin Info
Critical Category: Availability ==> Pervasive
Significant Change Date: 2003-04-03
Avoidance: Workaround
Responsible Manager: [email protected]
Original Admin Info: This document has been imported from KMS Creator and may need adjustment before re-publishing.

This imported document has been reviewed/adjusted by:
Review Name:
Review Date:

Original KMS Creator attributes below:

--- PLEASE DO NOT MAKE ANY CHANGES BELOW THIS LINE! ---

Sun Alert ID: 52687
Synopsis: Dual-Bus Sun StorEdge 3310 JBOD Configurations May Lose SCSI Termination in a Multi-Initiator Environment
Category: Availability
Product: Sun StorEdge 3310 Disk Array
BugIDs: 4818874
Avoidance: Workaround
State: Resolved
Date Released: 03-Apr-2003
Date Closed: 17-Jun-2004
Date Modified: 17-Jun-2004
Escalation IDs: 544126
Pending Patches:
Resolution Patches: none
FIN:
FCO:
Date Submitted: 01-Apr-2003
Submitter: [email protected]
Responsible Engineer: [email protected]
Responsible Manager: [email protected]
CTE group: Solaris Sustaining
Responsible Writer: [email protected]
Distribution: Public SunSolve

Workflow History:

WF State: Issued, 17-Jun-2004, Jeff Folla
WF Note: Updated sun alert to resolved per James Macfarlane. The request to
update this document was sent back in March and I thought I addressed the issue.
I noticed the sun alert had not been updated and made the changes today.

WF State: Issued, 03-Apr-2003, Karen Edwards
WF Note: oked by Joe

WF State: Draft, 03-Apr-2003, Karen Edwards
WF Note: i removed the paragraph that mentions FCO - sending for signoff

WF State: Draft, 02-Apr-2003, Jeff Folla
WF Note: Sending document to sunalert_review

WF State: Draft, 02-Apr-2003, Jeff Folla
WF Note: Received answers to my questions from engineer. Updated document accordingly.

WF State: Draft, 01-Apr-2003, Jeff Folla
WF Note: Sent SA to engineer with questions.

WF State: Draft, 01-Apr-2003, Jeff Folla
WF Note: Article created.

Exported from KMS Creator Sat May 21 08:57:26 2005 GMT, [email protected]
Internal SA-FAB Eng Submission
Dual-Bus Sun StorEdge 3310 JBOD Configurations May Lose SCSI Termination in a Multi-Initiator Environment

Product_uuid
3db30178-43d7-4d85-8bbe-551c33040f0d|Sun StorageTek 3310 SCSI Array

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