We currently only have one system at primary site, we use iTERA for replication to the hot site only.

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Monday, August 31, 2015 9:05 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: PowerHA evaluation

Why are you having such long downtime for PTF's and whatnot in your iTera setup?

We are using Mimix. Once a quarter we do PTF's and whatnot on the 'backup' lpar and no one notices. Then, that weekend we do a switch from primary to backup. It takes more time quiescing the applications than to do the actual switch. About an hour to an hour and a half in all. We run on the 'backup' for the weekend. Then we switch back on Sunday night.

Heck, even my bank (and it's no local yokel) publishes system outages in advance.


Rob Berendt

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