Techdocs Library > Flashes > HACMP Supports San Volume Controller (SVC) 4.1

Document Author:	Shawn Bodily		Document ID:	FLASH10587
Doc. Organization:	Advanced Technical Sales		Document Revised:	06/16/2007
Product(s) covered:	HACMP; HACMP/ES; SAN Volume Controller

Abstract: IBM High Availability Cluster Multiprocessing (HACMP*) for AIX 5L*, V5.3 and V5.4 updates support for the IBM System Storage SAN Volume Controller (SVC) Storage Software V4.1.

June 14, 2007 IBM High Availability Cluster Multiprocessing (HACMP*) for AIX 5L*, V5.3 and V5.4 updates support for the IBM System Storage SAN Volume Controller (SVC) Storage Software V4.1. Please refer to the following table for support details. Note: TL = Technology Level HACMP v5.3 HACMP v5.4 HACMP #IY94307 HACMP #IZ00051+ HACMP #IY87247 HACMP #IZ00050+ Multi-path driver AIX v5.2 TL 9 CSP AIX v5.3 TL 4 AIX v5.3 TL 5 AIX v5.3 TL 5 CSP or higher SDDPCM v2.1.1.0 AIX #IY95174 < not supported > AIX #IY95080 AIX #IY91487 <no APARs required> SDD v1.6.2.1 AIX #IY98568++ AIX #IY98751++ AIX #IY95080 AIX #IY98751++ AIX #IY98751++ + These APARs are not yet generally available. Please contact IBM Support to obtain Ifix packages for these APARs. ++ These APARs will not be made generally available for AIX 5.2 TL 9 and AIX 5.3 TL 5. Please contact IBM Support to obtain Ifix packages for these APARs. While not required for correct operation with SDDPCM, the configuration of Fast I/O Failure on fibre-channel devices is highly recommended. For information on configuring this feature refer to "StorageMultipath Subsystem Device Driver User’s Guide " http://www-1.ibm.com/support/docview.wss?uid=ssg1S7000303&aid=1 page 143 Additional requirement: The AIX OS error daemon parameters should be tuned to avoid lost log entries (See documentation APAR IY75323 athttp://www-1.ibm.com/support/docview.wss?uid=isg1IY75323) HACMP requires the buffer size be set to at least 1 MB and the log size to 10 MB. The following command can be used: "errdemon -B 1048576 -s 10485760" Restriction notes for Metro Mirror: An HACMP/XD and SVC Metro Mirror configuration with VIO is not currently supported. Although SVC Host Name Aliases are arbitrary, for HACMP's support of Metro Mirror, they must match the node names used in the defined HACMP sites. Resource Groups to be managed by HACMP cannot contain volume groups with both Metro Mirror-protected and non-Metro Mirror-protected disks. HACMP functions for resource group movement due to Selective Failover by the user is not yet supported across sites. HACMP does not support Global Mirror functions of SVC Copy Services. For specific HACMP C-SPOC restrictions, refer to the "HACMP/XD for Metro Mirror: Planning and Administration Guide", page 73. SDDPCM requires the configuration of Enhanced Concurrent Mode volume groups. Other notes SDD supports both Shared or Enhanced Concurrent Mode volume groups. Ensure your SVC is properly configured to support SDD/SDDPCM host multipathing. This involves adding all the WWWNs for a host's WWPN's into a single Host object on the SVC. For example, for an HACMP node name Node_A with 2 WWPNs of WWNN_1 and WWNN_2, run svctask mkhost -name Node_A -hbawwpn WWNN_1 WWNN_2 Request APARs from the IBM Electronic Fix Distribution site at: http://www14.software.ibm.com/webapp/set2/sas/f/genunix3/aixfixes.html For questions or concerns, please send a note to HA Feedback at: HA Solutions Feedback/Poughkeepsie/IBM or hafeedbk@us.ibm.com * Trademark or registered trademark of International Business Machines Corporation. Other company, product, and service names may be trademarks or service marks of others.

Classification:	Hardware; Software	Category:	Installation and Migration
Platform(s):	IBM System p Family
O/S:	AIX	Keywords:	HACMP, SVC, HACMP/XD, Metro Mirror