Originally posted by: vanguard_0812
1.I think that there are not many differences between V7.1.3 and V7.1.0
Please refer to the following.
[PowerHA for AIX Version Compatibility Matrix]
http://www-01.ibm.com/support/docview.wss?mhq=PowerHA%20Upgrade%206.1%207.1.0&mhsrc=ibmsearch_a&uid=tss1td101347
[Guide to IBM PowerHA SystemMirror for AIX Version 7.1.3]
http://www.redbooks.ibm.com/abstracts/SG248167.html?Open&mhq=PowerHA%20Upgrade%206.1%207.1.0&mhsrc=ibmsearch_a
[Checklist for migrating PowerHA SystemMirror 6.1 to 7.1.3 and Later]
http://www-01.ibm.com/support/docview.wss?mhq=PowerHA%20Upgrade%206.1%207.1.0&mhsrc=ibmsearch_a&uid=isg3T1022047
2.Capacity of the CAA disk
The recommended value of the Cluster Repository Disk capacity as the CAA is like 10GB.
However, the description of reason about this 10GB is not found
When capacity of Cluster Repository Disk is short, an error should be output, but does not know what kind of message is output.
The Repository Disk preferred size of 2 node clusters becomes 1GB in latest PowerHA 7.2.0, 7.2.1 Redbook.
Please refer to the following.
http://www.redbooks.ibm.com/redbooks/pdfs/sg248278.pdf
V7.2.0
3.2 Cluster Aware AIX repository disk
Cluster Aware AIX (CAA) uses a shared disk to store its cluster configuration information. You must have at least 512 megabytes (MB) and no more than 460 gigabytes (GB) of disk space allocated for the cluster repository disk. This feature requires that a dedicated shared disk is available to all nodes that are part of the cluster. This disk cannot be used for application storage or any other purpose.
The amount of configuration information that is stored on this repository disk is directly dependent on the number of cluster entities, such as shared disks, number of nodes, and number of adapters in the environment. You must ensure that you have enough space for the following components when you determine the size of a repository disk:
Node-to-node communication
Cluster topology management
All migration processes
The advised size for a two-node cluster is 1 GB.