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As I understand it you should care about journalling as in the event of a
failure it will help the DB recovery process when you start HA instance.

It's not required for the replication side of things but it is recommended
for the database recovery/integrity aspect.

On Thu, Mar 10, 2016 at 7:54 AM, Tsvetan Marinov <tsetso.marinov@xxxxxxxxx>
wrote:

Aaron,

Since PowerHA includes implementation of iASP, doesn't matter if you you
use external storage or internal, as long as you migrate the IFS folders to
the iASP, PowerHA will replicate everything in the iASP, using storage
block-page level, so you shouldn't care about journaling.

На ср, 9.03.2016 г. в 16:12 Nathan Andelin <nandelin@xxxxxxxxx> написа:

My understanding is that PowerHA doesn't require journaling for its
"replication". But IBM still strongly recommends journaling for such
mishaps as say batch updates that were posted incorrectly and need to be
backed out. PowerHA couldn't help with such mishaps.
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Tsvetan
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