[dba-SQLServer] Running two copies of the same database

Francisco Tapia fhtapia at gmail.com
Thu Jan 3 23:21:31 CST 2008


look into database mirroring from Sql Server 2005, this is a pretty cool
feature, and allows you to have 2 db's synched at all times. you can even
specify how the system should behave should you have a failover.



On Jan 3, 2008 8:58 PM, jwcolby <jwcolby at colbyconsulting.com> wrote:

> I have two servers Stonehenge and Azul, so called for the desktop
> wallpaper
> they run so that I can tell them apart when on my KVM.  Each is running
> Windows Server 2003 and SQL Server 2005.  These machines are essentially
> identical and have a large raid array.  Stonehenge has been the main
> machine
> and I have been backing up the databases from Stonehenge to Azul in case
> of
> corruption or other problems that Raid 6 doesn't cover.  With the advent
> of
> WHS and the possibility of using it as a backup tool, I am wanting to do
> something to get actual use out of the second server.  I actually have
> done
> some "research" kind of stuff such as the previously mentioned "vertical
> vs
> horizontal vs cover index" on Azul but the main server is Stonehenge.
>
> The problem as you might imagine is that due to the size of these
> databases
> (several over 100 gb and one over 200 gb) and the fact that I can and do
> mount the copies on Azul and use them in the research, it becomes tough to
> figure out which is "the latest".
>
> What I am wondering is whether there is a way to "mirror" the databases on
> two different machines such that they actually can be run on either
> machine
> and any changes made to one get written to the other in the background.
>
> Probably this weekend I am also about to try to bring up a Windows 2003
> x64
> and SQL Server 64 machine (as yet unnamed since I haven't picked the
> wallpaper).  If I succeed then it may very well become the main workhorse
> since it will be able to access a full 8 gigs of ram, and I will move the
> quad core processor over there.  Due to the expanded ram and quad
> processors
> I may also start doing virtual machines on that new server as well.
>
> So, any thoughts on organization matters here?
>
>
> John W. Colby
> Colby Consulting
> www.ColbyConsulting.com
>
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-- 
-Francisco
http://sqlthis.blogspot.com | Tsql and More...



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