RE: RAC node distance
- From: "Matthew Zito" <mzito@xxxxxxxxxxx>
- To: <tyfaniew@xxxxxxxxxxx>, "ORACLE-L" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 2 Apr 2010 21:16:43 -0400
Where do you put your third voting disk?
Matt
--
Matthew Zito
Chief Scientist
GridApp Systems
P: 646-452-4090
mzito@xxxxxxxxxxx
http://www.gridapp.com
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Tyfanie Wineriter
Sent: Fri 4/2/2010 7:29 PM
To: 'ORACLE-L'
Subject: RE: RAC node distance
I'm really not sure why everyone is responding that this would be an "odd
request." We are running a stretch rac with about 4 blocks in between our
rac servers, and it's running great. We do have a SAN with 2 storage
servers (one at each site, of course).. we run them with great load
balancing, no interconnect issues. It's a great answer for DR questions
like "What if one building has a tree fall on it" or "What happens if the
networks to one building gets chopped by a chainsaw" or even "What happens
if one center gets flooded".
I guess it depends on what your DR quest really is.
~ Tyfanie Wineriter ~
Database Administrator
University of Oregon
1212 University of Oregon
Eugene, OR 97402-1212
(541) 346-1366
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Ram Raman
Sent: Wednesday, March 24, 2010 8:21 PM
To: ORACLE-L
Subject: RAC node distance
Hi
We have a 2 node RAC for one of our new applications. There are 2 sets of
application/web servers; each set located on different building separated by
about 3 city blocks. But, both the RAC nodes are in one of the buildings.
The management seemed to be inclined to want to separate them in different
buildings. To me that does not sound like a great idea, with interconnect
traffic and such. Questions:
1) Are there any sites that use RAC 'geo-cluster' mode?
2) Would running the RAC in 'active-passive' mode help in case of geo
cluster type solution? What kind of interconnect is used by sites that have
geo cluster type RACs?
PS. I am aware that RAC is not a DR solution, going for a dataguard would be
a good DR solution.
Ram.
Other related posts: