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HomeHomeDevelopment and...Development and...SQL and SQL Ser...SQL and SQL Ser...Looking for sql server replication consultant...Looking for sql server replication consultant...
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6/23/2010 1:34 AM
 
Joe Baranauskas


Joined: 12/23/2007
Posts: 30
Hi Everyone.

We are running some large DNN sites on Amazon in a web farm environment. These servers use shared IIS configurations and shared content using AD DFS.

Our web sites and file servers are fault tolerant and load balanced.

Our current weakness is sql server. We have tried a load balancer fronting 2 sql servers.

Our problem is that we need to run real-time sql replication between the 2 servers for load balancing and fault-tolerance to work. The replication model we have tried is real-time transactional replication with updatable subscriber model.

The problem is this....DNN db is using some ntext, image fields that cannot be replicated from an updatable subscriber. NText and Image fields not being updatable is a well documented MS SQL issue.

We are looking for a consultant that has done sql replication supporting DNN sites.

If you have this experience, we want to talk to you as soon as possible....

Please contact me directly at joe@contestfactory.com

Thank you for reading this post....cheers!

~Joe
Warm regards,
Joseph J. Baranauskas
Systems Architect
joe@curbkicked.com
 
New Post
8/26/2010 3:05 AM
 
Darivian

Joined: 8/25/2010
Posts: 1
Hey Joe,

Did you end up getting anywhere with this? I was looking at setting up mirroring on the DNN database to give us some sort of redundency but then i came across your post.

Are you able to link me to any SQL doco that documents the issue?

Cheers,

Dave 
 
New Post
8/26/2010 3:54 AM
 
Sergiy Velychko


Sergiy Velychko's Avatar

forDNN.com
Joined: 7/10/2005
Posts: 376
Joe

We had the same problem with replication and ntext in SQL 2000. And have not tried after this fail. What about SQL 2008? I have heard problem has been fixed in 2008. Any news on it?

Sergey

forDNN Team is DotNetNuke Partner 

 
New Post
8/26/2010 4:25 AM
 
Sebastian Leupold


Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

Sebastian Leupold's Avatar

www.dnnwerk.de
Joined: 3/8/2004
Posts: 46212
There are still a number of nText columns, which haven't been switched to nVarchar(Max) yet. Did you try to increase caching and optimizing tables and indexes, using filebased logging and external search store, instead of trying to solve it "the system way"?
Cheers from Germany,
Sebastian Leupold

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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