Battery replacement may cause BOTH sides of CACHE or shared memory to blockade leading to a total system outage.

Asset ID:	1-73-1000228.1
Update Date:	2010-09-17
Keywords:

Solution Type FAB (standard) Sure

Solution 1000228.1 : Battery replacement may cause BOTH sides of CACHE or shared memory to blockade leading to a total system outage.

Related Items


Sun Storage 9910 System
 Sun Storage 9960 System

Related Categories


GCS>Sun Microsystems>Sun FAB>Standard>Reactive

PreviouslyPublishedAs
200303

Product
Sun StorageTek 9910
Sun StorageTek 9960 System

Impact

Battery assembly maintenance or replacement may cause one half, or ALL of CACHE or SM to become blocked.

The issue can occur under the following conditions:

BASIC battery assembly (BATTERY-10, -11, -20, -21) is being replaced for any reason, scheduled or unscheduled.
Microcode is below DKCMAIN 01-19-44-00/00.
Old battery replacement procedure is used per ECN.

Noise generated by incoming current during battery connection may cause the backup switching circuit on the CACHE PCB to fail, which may cause both sides of CACHE or SM to become blocked. If both sides of CACHE or SM are blocked, the array will experience a complete system outage and possibly DATA LOSS.

   MICRO-PROGRAM VERSIONS:

All Microcode Levels of SE9900 Series

Symptoms

Resolution

Ensure microcode level DKCMAIN 01-19-44-00/00 or above is on the subsystem prior to performing battery replacement. Do not perform scheduled battery maintenance at this time on the BASIC battery assemblies unless following the new replacement instructions. The new instructions require the removal of the corresponding BAT-CTR during battery replacement.

The new BASIC battery assembly replacement instructions are as per the details provided in HDS Alert: 9960#136G / 9910#110G. The alert is available for review via:

http://webhome.sfbay/sejsc/AL/9900_023715_04-20-2005.htm

These new instructions are MANDATORY.

Microcode has been modified to display the new battery replacement procedures on the SVP as a step by step procedure beginning with DKCMAIN 01-19-44-00/00.

Modification History
Date: 15-JUL-2005

Updated URL information in Corrective Action section.

Previously Published As
100561
Internal Comments



 Abbreviations used in this FIN.



 BAT-CTRXX	Battery Controller

 FCB             Field Change Bulletin

 ECN		Engineering Change Notification

 SM              Shared Memory

 SVP		Service Processor

 PCB             Processor Control Board

 DKC		Disk Controller



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Related Information

URL: http://webhome.sfbay/sejsc/AL/9900_023715_04-20-2005.htm
Other: HDS Alert: HDS 9960#136A, HDS 9910#110A; ECN: DKC410-H046

Internal Contributor/submitter
Ross.Keeley@sun.com

Internal Eng Business Unit Group
KE Authors

Internal Eng Responsible Engineer
Ross.Keeley@sun.com

Internal Services Knowledge Engineer
Joe Davis

Internal Kasp FAB Legacy ID
100561, I1037-1 (FIN)

Internal Sun Alert & FAB Admin Info
Critical Category:
Significant Change Date:
Avoidance: Patch
Responsible Manager: null
Original Admin Info: [WF 15-JUL-2005, Joe; updating per ross keely, pete on vacation]

Product_uuid
2a918ae2-0a18-11d6-834a-c679537eebe7|Sun StorageTek 9910
2a94fb3c-0a18-11d6-90a8-c9c08656284f|Sun StorageTek 9960 System

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