Difference between concurrent and enhanced concurrent VG

UNIX AIX
1

Hi,

What are the differences between concurrent and enhanced concurrent VGs.?

Any advantages of enhanced concurrent VG over normal concurrent vg

Regards,
Siva

2

Never heard of them, but the latter seem much preferred, like the former is a 32 bit compatibility thing: IBM Knowledge Center

3

enhanced concurrent VGs are mostly used on hacmp/powerHA systems. In a two node system, this VG works active for one node and passive for the other. All changes made on LVs on node1 are update on node2 (lazzy update)..

concurrent VGs can not be shared with teo or more nodes..

A good explanation is here:

http: //unix.ittoolbox.com/groups/technical-functional/ibm-aix-l/concurrent-and-enhanced-concurrent-vgs-4089500