We are considering switching to PowerHA from a logical replication product too. Our setup would also include IBM SVC's since our SAN storage is non-IBM, I'd be interested in comment on SVCs if anyone has any experiences with them also.
"At the spring Common Conference I attended a session that discussed adding a subset of Vision's replication product designed and "priced" to do just that..."
Kenneth, what session was that? I'd like to look over that presentation, I must not have attended that one.
Dana
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Graap, Kenneth
Sent: Monday, June 22, 2015 5:16 PM
To: Midrange Systems Technical Discussion
Subject: Power HA
I have been using PowerHA SystemMirror for IBM i for a couple of years now.
It isn't an object based replication product and therefore doesn't care what is in the iASP, it just makes an identical copy on the target system. The mirror on the target can be detached from the source and attached to the target for BU to tape processing. OR if you are using SAN storage a Flash Copy of the iASP can be created very quickly on the target, attached to another LPAR and a BU can run from there without interrupting the regular mirroring process for more than a few minutes.
It does have the ability to synchronize certain objects from *SYSBAS to *SYSBAS on the target system but it is not a solution for keeping DB in *SYSBAS in sync. It will sync things like *USRPRF, *SBSD, *JOBD etc..
Some people use PowerHA for the iASP mirroring and another mirroring product for *SYSBAS if they need to replicate library and IFS objects residing there. At the spring Common Conference I attended a session that discussed adding a subset of Vision's replication product designed and "priced" to do just that...
We originally wanted a solution that we could implement on a "shoestring budget" and PowerHA with Geographic Mirroring of an iASP on internal disk was not very expensive to set up.
All in all PowerHA has worked well for us but we did have to add more memory on both the source and target system and more bandwidth on the connection between the two systems to eliminate some performance issues.
We are looking at moving into SAN storage and a couple of Power8's in the near future so we can remove the overhead of PowerHA from the system (mirroring would be done at the SAN level) and to get the FLASH COPY feature (which won't work with internal disk).
Reply or Forwarded mail from: Kenneth E Graap
-----Original Message-----
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options,
visit:
http://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at
http://archive.midrange.com/midrange-l.
Attention: This electronic document and associated attachments (if any) may contain confidential information of the sender (SHAZAM Network) and is intended solely for use by the addressee(s). Review by unintended individuals is prohibited. If you are not the intended recipient: (i) do not read, transmit, copy, disclose, store, or utilize this communication in any manner; (ii) please reply to the sender immediately, state that you received it in error and permanently delete this message and any attachment(s) from your computer and destroy the material in its entirety if in hard copy format. If you are the intended recipient, please use discretion in any email reply to ensure that you do not send confidential information as we cannot secure it through this medium. By responding to us through internet e-mail, you agree to hold SHAZAM, Inc. and all affiliated companies harmless for any unintentional dissemination of information contained in your message. Thank you.
midrange.com
