RE: DR, HA and remote journaling from a non-iSeries perspective

Eric and Rob,

Thanks for the vendor links. I try not to query this list without doing at
least some homework and have spent considerable time researching the iSeries
products. I was hoping for a quick overview of how some other platforms
handle data replication without arranging yet another con-call with the
sales rep, supervisor and support tech! Did it anyway, though...

In case anyone else is interested, it turns out that other database systems
use a process similar to iSeries 'journaling', but each platform has its own
terminology. SQL Server calls them 'log files', Oracle refers to 'redo logs'
and mySql uses 'binary logs'. In all cases, a vendor-supplied monitoring
program runs on the source machine and forwards database updates to the
target machine(s).

The iSeries provides an enhanced feature called 'remote journaling' that
reduces the load on the source machine. From the brief con-call this morning
I was unable to determine whether other platforms provide a similar
enhancement.

JK

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-
bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Sunday, December 23, 2007 7:28 AM
To: Midrange Systems Technical Discussion
Subject: Re: DR, HA and remote journaling from a non-iSeries perspective

John,

You know, Mimix has a product that not only runs on the iSeries, but runs
on other platforms as well. Who better to help explain it than someone
who has a vested financial interest in getting a product to you? Call
them. We are using the Mimix HA Lite on our iSeries. Actually we have
two pairs of lpars. Production on the 570 is replicated to the 520 and
development on the 570 is replicated on the 520. We have purchased the
Mimix for PC's stuff also but have not yet implemented it. That might
wait until we migrate many of our servers to blades. But I am not sure
exactly what the hold up is. (Not my "area of concern".)

Rob Berendt
--
Group Dekko Services, LLC
Dept 01.073
PO Box 2000
Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com


"JK" <johnking@xxxxxxx>
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Subject
DR, HA and remote journaling from a non-iSeries perspective

To satisfy requirements at our new parent company our division will be
required to upgrade our current DR process and I've been asked to research
iSeries DR and HA products.

From reading whitepapers and talking to sales reps I have a yeoman's
understanding of the current technologies - enough to provide a
management-level overview in January. What I lack, though, is knowledge of
how the current iSeries processes compare with others. These folks are all
SQL-server types and can barely spell "iSeries" so I'd like to be able to
explain things in their terminology.

Is anyone aware of literature that compares the current IBM technologies
(journal harvesting and remote journaling) with what is being done on
other platforms?

Many thanks, JK