Upgraded AIX433 to AIX52. Removed HA441 and installed HA51 w/fixes.
With HA441 I used tmssa in our 2 node cluster. The cluster is very
basic with little configuration. The vg on the SSA drives is not used
concurrently. With HA51 the tmssa config says the SSA vg needs to be
enhanced concurrent mode and asks which disk the heartbeat will write
to. Am I right that this is totally different than 441? I don't want
to make the vg concurrent mode. Should I continue with tmssa? What
would a better option be?

Try serial or ethernet

g. doogle wrote:
> Upgraded AIX433 to AIX52. Removed HA441 and installed HA51 w/fixes.
> With HA441 I used tmssa in our 2 node cluster. The cluster is very
> basic with little configuration. The vg on the SSA drives is not used
> concurrently. With HA51 the tmssa config says the SSA vg needs to be
> enhanced concurrent mode and asks which disk the heartbeat will write
> to. Am I right that this is totally different than 441? I don't want
> to make the vg concurrent mode. Should I continue with tmssa? What
> would a better option be?

"g. doogle" <gdoogle@yahoo.com> schrieb im Newsbeitrag
news:2eafbe56.0405241128.73fab8eb@posting.google.c om...
> Upgraded AIX433 to AIX52. Removed HA441 and installed HA51 w/fixes.
> With HA441 I used tmssa in our 2 node cluster. The cluster is very
> basic with little configuration. The vg on the SSA drives is not used
> concurrently. With HA51 the tmssa config says the SSA vg needs to be
> enhanced concurrent mode and asks which disk the heartbeat will write
> to. Am I right that this is totally different than 441? I don't want
> to make the vg concurrent mode. Should I continue with tmssa? What
> would a better option be?

Tmssa on 5.1 does not need shared vg in (enhanced) concurrent mode. I think
two things got mixed up in your configuration/error messages. Make sure that
you configured your tmssa devices and node_number correctly before you let
hacmp detect this tmssa net.
Sending hearbeats over harddisks would require enhanced concurrent vg. This
is a new feature (and should not be used if you don't have to (slows cluster
down)) but it has nothing to do with tmssa. Tmssa should work as with the
previous hacmp versions.
If you want to use enhanced con. vg you probably want to speed up takeover
of the vg.

HTH,
andreas