What's new in SAS RAID controllers for AIX

Read about new or significantly changed information for the SAS RAID controllers for AIX® topic collection since the previous update of this topic collection.

May 2009

The following updates have been made to the content:

Added Viewing controller SAS addresses and Controller SAS address attributes.
Updated information about primary and secondary controllers for all High Availability (HA) RAID configurations at Multi-initiator and high availability.
Added new information about HA access characteristics to three topics: HA access optimization, Displaying HA access characteristics, and Configuration and serviceability considerations for HA RAID configurations.
Added battery replacement procedures for the 574E and 572F/575C card set concurrent maintainable battery packs.
Added a procedure for Separating the 572F/575C card set and moving the cache directory card.
Added five new adapters to the feature comparison tables for PCIe and PCI-X cards.

November 2008

The following updates have been made to the content:

Added the Migrating an existing disk array to a new RAID level topic.
Added information regarding the performance effect of RAID 5 and RAID 6 without cache for adapters CCIN 572A, CCIN 57B9 and CCIN 57BA to the feature comparison tables for PCIe and PCI-X cards.
Added a recommendation to reconstruct degraded disk arrays before processing the system verification action to MAP 3144, MAP 3146, MAP 3152, and MAP 3153.
Updated the AIX software requirements table.
Updated the RAID level summary table.
Added a note regarding errors logged when updating SAS expander microcode to Installing an HA two-system JBOD configuration.