RE: Symantec Storage Foundation for Oracle RAC

  • From: "Caviness, Jay A" <Jay.Caviness@xxxxxxxxxxxx>
  • To: ken_nguyen@xxxxxxxxxxx, tim@xxxxxxxxx
  • Date: Tue, 30 Oct 2007 10:22:11 -0500

It depends on the definition of "disaster proof" and how much money a
company is willing to spend on infrastructure.   For local recovery, up
to about 50km realistically, RAC can be used in what are known as
stretch clusters, but that requires very high bandwidth for both storage
and the interconnect.  I have worked with clients that separate nodes in
their clusters by blocks to remove them from the same building or place
them on opposite ends of a campus.  That protects them from more
localized events such as a building fire.  For major events, a standby
solution would be best either employing Oracle's logical or physical
standby (less of a bandwidth issue, but still some to ship archive logs)
or whatever the modern versions or the old EMC SRDF solutions for san
replication, which is quite expensive.   
Most anything can be automated, but that depends on the system.
It really comes down to how much playing the odds is worth compared to
normal data availability.







From: ken_nguyen@xxxxxxxxxxx [mailto:ken_nguyen@xxxxxxxxxxx] 
Sent: Monday, October 29, 2007 9:33 PM
To: tim@xxxxxxxxx
Cc: Tim Gorman; finn.oracledba@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: Re: Symantec Storage Foundation for Oracle RAC

I'm not sure what you're trying to get at, and don't really see why you
wouldn't come right out and say it, but anyway..
So, the particular solution that I'm looking at employs a Global
Clustering Option.  So, whatever happens at the primary site to cause a
failure (earthquake, wild fire, etc..) that the company deems as an
outage, would kick off the remote site to come online as the primary

-------------- Original message -------------- 
From: Tim Gorman <tim@xxxxxxxxx> 
Would an earthquake level just part of a data center?  Do wildfires only
burn the 3rd server in a rack and not the 4th, sparing the storage in
the next cabinet over?

In what way does RAC (or any clustering solution, such as SFOR) protect
against such threats?

ken_nguyen@xxxxxxxxxxx <mailto:ken_nguyen@xxxxxxxxxxx>  wrote: 

As Finn mentioned, I'm looking at this to provide HA.  This is for a
location in SoCal, so its prone to earthquakes, and most recently, wild

-------------- Original message -------------- 
From: "Finn Jorgensen"  <mailto:finn.oracledba@xxxxxxxxx>

RAC/SFOR/HACMP/VCS etc are for high availability. Not disaster recovery.
As such, it's for the type of "disasters" that involve losing 1 server.
Anything else you would need a DR setup to handle.

On 10/29/07, Tim Gorman < tim@xxxxxxxxx <mailto:tim@xxxxxxxxx> > wrote: 

Well......out of all the possible (and probable) range of faults and
failures, exactly what types of "disasters" does clustering such as RAC
or SFOR protect against?

ken_nguyen@xxxxxxxxxxx <mailto:ken_nguyen@xxxxxxxxxxx>  wrote: 

>It has to be a very selective disaster for clustering (i.e. RAC, HACMP,
etc) to provide much protection.
Sorry, I don't understand what that means.

-------------- Original message -------------- 
From: Tim Gorman  <mailto:tim@xxxxxxxxx> <tim@xxxxxxxxx> 
It has to be a very selective disaster for clustering (i.e. RAC, HACMP,
etc) to provide much protection.

ken_nguyen@xxxxxxxxxxx <mailto:ken_nguyen@xxxxxxxxxxx>  wrote: 

Dan, thanks for the feedback.
We're trying to protect more than just the Oracle DB.  While CRS and
Dataguard work well to provide HA, it doesn't take into account the
Siebel, IIS, etc installs that form the entire application stack.
With this solution, we're hoping to lower the TCO in the event of a

-------------- Original message -------------- 
From: Dan Norris  <mailto:dannorris@xxxxxxxxxxxxx>

I have used the SFOR previously, but not on the current versions and not
with 10g DB. I had no problems with the SFOR software.

If I were implementing a cluster today with 10g, I wouldn't use any
non-Oracle clusterware. Instead, I'd just use Oracle Clusterware as it
provides all the HA you'll need for the DB. Maybe you have other reasons
for using SFOR...I hope you do because I couldn't justify the investment
given the current architecture. 

Others have posted similarly on this list and in OTN forums as well. 


----- Original Message ----
From: Ken Nguyen  <mailto:ken_nguyen@xxxxxxxxxxx>
To: oracle-l@xxxxxxxxxxxxx <mailto:oracle-l@xxxxxxxxxxxxx> 
Sent: Monday, October 29, 2007 4:46:05 AM 
Subject: Symantec Storage Foundation for Oracle RAC

Wecre looking to implement Symantec Storage Foundation HA for Oracle RAC
to offer HA for our Oracle 10g RAC on RHEL.


Oracle has fully certified most of the components within this Symantec
solution, except for the automatic failover piece (GCO). 

This component is certified on all platforms except for Red Hat, could
have something to do with Oraclecs OEL initiative.


Is anyone using this or any other Symantec SF products without any





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