IDS Forum

RE: ontape/on-bar compatibility between PA-RISC &

Posted By: Jeff Filippi
Date: Wednesday, 6 July 2011, at 8:26 a.m.

In Response To: ontape/on-bar compatibility between PA-RISC & IA64 (DAY BRAD)

Hi Brad,

Yes it is supported, see the below link to IBM describing it.
I had a client about 4 years ago that was running their primary Informix
instance on Itanium and HDR instance on PA-RISC using ontape to restore the
HDR.

https://www-304.ibm.com/support/docview.wss?dc=DB560&rs=630&uid=swg21255891&
context=SSGU8G&cs=UTF-8&lang=en&loc=en_US&rss=ct630db2

Jeff

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of DAY
BRAD
Sent: Tuesday, July 05, 2011 3:06 PM
To: ids@iiug.org
Subject: ontape/on-bar compatibility between PA-RISC & IA64 [24222]

We are currently running IDS 11.50.fc5 on HP-UX 11i v3, running on PA-RISC
(PA8900 chips). We are considering purchasing an Integrity (IA64 chip)
server for additional capacity, as HP is no longer producing new PA-RISC
servers. The other option is to purchase used PA-RISC servers, but the
current End-of-Life for support of those servers is 12/31/2013.

In the Machine-Specific notes for IDS on 64-bit HP-UX, it states that High
Availability Data Replication (HDR) between PA-RISC and IA64 machines IS
SUPPORTED, so long as both servers have the same release of IDS, and any
UDRs are compiled for each server (we don't have any UDRs except for SPL).

My understanding of HDR is that the secondary server is kept in sync with
the primary because the primary sends its logical logs to the secondary, and
the secondary runs in fast recovery mode until such time as the primary
fails, at which time the secondary finishes the fast recovery and switches
to online mode. That implies that the disk page size and layout are
compatibile between the two systems, and that there is no
big-Endian/little-Endian issue.

Given that, I want to see if anyone has any experience with ontape/on-bar
archive compatibility between PA-RISC and IA64. Ideally, you can point me to
some documentation that state that this is supported, but if not, I would
still like to hear from anyone who has experience working with these two
architectures (I HOPE I'm not the first to have to address this!) to see if
there is anything else that will cause potential problems with this
scenario.
Can ontape/on-bar archives from a PA-RISC instance be restored to an IA64
server? Can it work the other way, as well? Any issues with any other
utilities?

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Messages In This Thread

• ontape/on-bar compatibility between PA-RISC & IA64
  DAY BRAD -- Tuesday, 5 July 2011, at 4:05 p.m.
  • Re: ontape/on-bar compatibility between PA-RISC &
    Wiesiek Glod -- Tuesday, 5 July 2011, at 5:33 p.m.
  • RE: ontape/on-bar compatibility between PA-RISC &
    Jeff Filippi -- Wednesday, 6 July 2011, at 8:26 a.m.
    • Re: RE: ontape/on-bar compatibility between PA-RIS
      DAY BRAD -- Wednesday, 6 July 2011, at 9:19 a.m.

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