[DRBD-user] disaster recovery failover

[John S Little]

Hi all,

I saw the below post from "Subject: Re: [DRBD-user] 3 simple questions for 
a nifty setup" and it makes me wonder if I need to rethink part of our 
disaster recovery plan.

We are building a disaster recovery center connected by fiber about 20 
miles from our location.  Where drbd is concerned I had planned on the 
primary here and the secondary at the dr site.  From what I read below 
this may not be such a hot idea.  Please let me know comments, insights 
and opinions..


> buy it, and I'll tell you :->
> well, basically, in case they'd need the "tertiary", what would happen 
is,
> they phone us, and we do the tricky bit. *g*
> 
> as I said, the "tertiary" is for desaster recovery, not for "high"
> availability, so in case it is needed, there already has been a
> desaster, and the additional latency of getting us involved is ok
> compared to everything else.

So we're looking at high availability with two machines locally and 
disaster recovery with a third at the dr site?

What is the response time from the phone call?  Even though it is a file 
server server 90% of the documents are on it. We could stand some latency 
but as a hospital we would need to be up rather quickly.


> 
> you really do not want to have automatic failover to a distant data 
center
> just because heartbeat feels like it...

Point taken..
 
> cheers,
> 
> -- 
> : Lars Ellenberg                                  Tel +43-1-8178292-0  :
> : LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
> : Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :


Regards,

John Little
Hendricks Regional Health IS Department
317-718-4752
jslittl at hendricks.org
http://www.hendrickshospital.org