RE: RAC Vs Standby Database between Primary and Secondary Data Centers

  • From: "Goulet, Dick" <richard.goulet@xxxxxxxxxxxxx>
  • To: "Jared Still" <jkstill@xxxxxxxxx>, <dannorris@xxxxxxxxxxxxx>
  • Date: Tue, 22 Jan 2008 10:02:29 -0500



            I'm sorry, but I have not had similar experience.  Most SAN
installs that I've worked on have mirrored disk, dual or better
interface cards as well as cabling so that there isn't just one path to
the drives.  I have tried NAS setups that have failed badly, but
thankfully those were in a testing mode.  Never trust a sales droid,
always push the "press-to-test" button.


Dick Goulet / Capgemini
North America P&C / East Business Unit
Senior Oracle DBA / Hosting
Office: 508.573.1978 / Mobile: 508.742.5795 /
Fax: 508.229.2019 /  Email: richard.goulet@xxxxxxxxxxxxx
45 Bartlett St. / Marlborough, MA 01752

Together: the Collaborative Business Experience 


From: Jared Still [mailto:jkstill@xxxxxxxxx] 
Sent: Monday, January 21, 2008 5:59 PM
To: dannorris@xxxxxxxxxxxxx
Cc: Goulet, Dick; mssql_2002@xxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: Re: RAC Vs Standby Database between Primary and Secondary Data


On Jan 21, 2008 9:53 AM, Dan Norris <dannorris@xxxxxxxxxxxxx> wrote:

        Here's where I think we need to make clear what defines "high
availability" versus what becomes "disaster recovery". Many sites
want/need both. In my dictionary, I define high availability as a system
that can tolerate a failure of a single component without affecting the
application availability. 

The problem I have with that definition is the the HW duplicated is 
not the HW most prone to failure - the storage.

Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist 

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