SE9990 Shared Memory or Cache Memory maintenance can cause Microprocessor blockades and lead to a total system outage.

Asset ID:	1-73-1000485.1
Update Date:	2010-09-10
Keywords:

Solution Type FAB (standard) Sure

Solution 1000485.1 : SE9990 Shared Memory or Cache Memory maintenance can cause Microprocessor blockades and lead to a total system outage.

Related Items


Sun Storage 9990 System

Related Categories


GCS>Sun Microsystems>Sun FAB>Standard>Reactive

PreviouslyPublishedAs
200623

Product
Sun StorageTek 9990 System

Part

Part No: 370-7101-01
Part Description: Cache PCB
Part Model: ALL

Part

Part No: 370-7103-01
Part Description: Shared Memory PCB
Part Model: ALL

Part

Part No: 370-7105-01
Part Description: CM DIMM
Part Model: ALL

Part

Part No: 370-7104-01
Part Description: SM DIMM
Part Model: ALL

Part

Part No: 370-7100-01
Part Description: Shared Memory PCB
Part Model: ALL

Xoption

Xoption Number: SE9990
Xoption Description: Sun StorEdge 9990 Array

Impact

A logical inconsistency was discovered after SM recovery from a SM blockade. This logical inconsistency causes the micro-program to refer to the wrong control information written by the hardware. This causes multiple microprocessors to block and can lead to loss of data availability. The problem may occur when 1) and 2) below, as well as the conditions listed in the Product Affected section are all satisfied.

1) One of the following two conditions is occurring:

a. I/O is present.

b. TrueCopy (HRC/HORC), ShadowImage (HMRCF/HOMRCF/HIHSM) or Hitachi Universal Replicator (HUR) pairs exist the problem may occur with or without any I/O occurring.

AND

2) One of the following maintenance activities is being performed:

a. Maintenance replacement of SM board or SM DIMM.

b. Addition or de-installation of Shared Memory for all reasons including the addition or de-installation of CU and/or PDEV etc. or the addition or de-installation of the additional SM feature.

c. Addition or de-installation of Cache Memory.

Resolution

To prevent this, install microcode 50-03-37 or 50-03-71 or any version of microcode higher than 50-03-71 prior to any Cache or shared memory maintenance:

If this situation has already been encountered, please escalate to PTS for recovery procedures.

Modification History
Date: 21-MAR-2007

Changed Product from KASP (Any System) to SE9990.

Previously Published As
101781
Internal Comments

None.

Related Information

Manual: Maintenance Manuals for the 99xx series arrays.
URL: http://pts-americas.west/nws/products/T99x0/documentation.html
Other: HDS ALERT USP_039330

Internal Eng Business Unit Group
KE Authors

Internal Services Knowledge Engineer
[email protected] (as of 3/21/07)

Internal Kasp FAB Legacy ID
101781

Internal Sun Alert & FAB Admin Info
Critical Category:
Significant Change Date: 2005-06-21
Avoidance: Upgrade
Responsible Manager: null
Original Admin Info: WF - chgd Product from KASP to SE9990. - Joe 3/21/07

Product_uuid
15644879-f179-11d8-ab63-080020a9ed93|Sun StorageTek 9990 System

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