SQL Server clustering : Resource Sharing

Hi,
1. What is shared nothing architecture under SQL server clustering?
2. Is each database at node replicated on other node fro failover?
3. If I have 4  nodes in a cluster, can I distribute the load for those databases across all nodes of the cluster? Under ORACLE RAC it works brilliantly. I read in docs I can't?
4. If that is the case then how does having more than 2 nodes in a cluster helps?


Thanks
crazywolf2010Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ChrisCommented:
you can't do this out of the box with SQL - at least automatically

If you set up a cluster the DB's sit on shared storage and that storage is failed over to a specific node
If you have mutiple nodes and multiple instances in the cluster then you can distribute the load among them by moving specific instances to each node i.e DB1 on instance 1 on SQL1 and DB2 on instance 2 on SQL2 -

be aware that this changes the licencing you need as it is no longer active-passive/failover clustering so you will need to licence each server.

By having a 2 or more node SQL cluster means you have automated resilience so that if one node has a hardware failure then databases and instances will fail over to the other node, you could have this multisite to give you geographical resilience as well
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2008

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.