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  3. February 2013

RE: Live Partition Mobility Question 'vs' POWER-HA.

How exactly does PowerHA Global Mirror interface with the SAN? I know there are command APIs that allow you to instigate flash copy from the IBM i, but I do not fully understand the role of PowerHA assuming SAN to SAN replication.

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-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Thursday, January 31, 2013 1:31 PM
To: Midrange Systems Technical Discussion
Subject: Re: Live Partition Mobility Question 'vs' POWER-HA.

Then I think your after the PowerHA that uses SAN storage and relies on that to replicate the data, and allows for two systems you can switch
back and forth with. The SAN and Global Mirroring are the pricey
parts, but if you need them, worth it.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 1/31/2013 1:23 PM, Jack Kingsley wrote:
SAN to SAN replication without the need for IASP if at all possible.
I need localized HA with remote side continuous. I don't mind IASP
but was trying to see where the comparisons go as well as the price.

On Thu, Jan 31, 2013 at 2:09 PM, Jim Oberholtzer<
midrangel@xxxxxxxxxxxxxxxxx> wrote:

What are you trying to accomplish? One provides for a separate
system and storage, the other common storage (that is replicated
by the storage
manager) and separate systems. One's aimed at High Availability
ones aimed at Continuous availability.

PowerHA is cheaper, but has the drawback of requiring iASPs.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 1/31/2013 12:20 PM, Jack Kingsley wrote:
> Has anyone installed this, pros/cons. I have been reading the
requirements
> and they seem lengthy as well as pricey. Is there any real
significant > gains to doing LPM 'vs' POWER-HA. A major
requirement for LPM is SAN
where
> POWER-HA could be either or from what I am reading.
> --
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