RE: High availability questions -- MIDRANGE-L

Expensive and not 100% reliable.  Remember, you have a network as part of
the solution, and these products don't help your network stay up.  In fact,
there's usually a lot of traffic which can hurt the network.  

Or, the network goes down for a few seconds, your replication product may
stop.

My advice (honest here, too).  Have them buy a new AS/400.  Take it home.
Next, take your current production AS/400, add another IP address and tell
folks that's the new machine.  Even better, set up another partition on the
machine.  Save while active, and you're done.  :)  

If that doesn't help, I guess we'd need to know more what type of
replication you'd be doing.  ie just data, or all objects.  And, if one goes
down, would you want it to automatiaclly "switch" over the other machine?

Well, there are flaws with those theories as well.  We tried it, and finally
decided that it was more trouble to try and replicate two AS/400s (at the
object level) than to just not worry about our machine going down.  If it
was a total catastrophy then it would take a max of 2 hours to load up
another AS/400 to take it's place.  That's not too much to ask.  24/7 is a
want, not a need.  Otherwise everyone would be out of business.  (ie they
were never 24/7 before it became a buzzword).  Not to mention, if your
business can't survive with a couple of hours of downtime, maybe it should
be re-evaluated if it's viable.  They say you should be able to run your
shop for 6 months on no income.  :)  

Did I stray off the subject?

Brad

> -----Original Message-----
> From: Art Tostaine, Jr. [mailto:art@link400.com]
> Sent: Friday, March 23, 2001 12:14 PM
> To: MIDRANGE-L@midrange.com
> Subject: High availability questions
> 
> 
> I've been asked by a customer what it would take to setup 
> another AS/400 for
> backup purposes.  They will need guaranteed 24/7/365 availability.
> 
> They currently have a 270 which will be moved to a 
> co-location like Exodus,
> then they will purchase another which will be at another 
> Exodus location.
> 
> I'm looking for general information about what we need to do. 
>  I know that
> we will need another AS/400 and  some softare to replicate the data.
> 
> I know of datamirror and lakeview technology.  Are there any others?
> 
> Last time I looked, these solutions were very expensive.  
> What we can expect
> to spend?
> 
> Thanks.
> 
> Art Tostaine, Jr.
> CCA, Inc.
> Jackson, NJ 08527
> 
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