SQL with no downtime

Posted on 2013-06-25
Medium Priority
Last Modified: 2013-07-02
I have a Server 2008 r2 machine running SQL 2008. I have one database that I want as much up time as possible. I do not have any shared storage. I have 4 servers that are running ESXi 5.1.

Is it possible to have more SQL up time (HA)  without a cluster?

Also when people use a cluster with shared storage isn't the shared storage a major vulnerability? So when the SAN goes down it takes down every single server? Right now when a server goes down only 25% of services are affected.
Question by:Biofilminc
LVL 85

Expert Comment

by:David Johnson, CD, MVP
ID: 39276226
For what you want you need clustered sql instances running on clustered storage pools. 1# removes the sql server dependency and #2 removes the storage dependency.  None of this comes free.. Double the storage costs (including the subsystem) plus double the server costs.

Author Comment

ID: 39276248
I found this

SQL Server 2012 AlwaysOn Availability Groups –  an AlwaysOn Availability Group is created between several standalone SQL Server instances. At least you need 2 different SQL Server instances. All instances that participating in an AlwaysOn Availability Group don’t need any Shared Storage

Would this work?

I have lots of space and servers so that is no cost. Adding shared storage is a big cost.
LVL 16

Assisted Solution

EvilPostIt earned 1000 total points
ID: 39277501
This should work as the database would kept in multiple instances and there would be no need to update the connection string on failover as this is taken care of as part of the Always on Availability Groups.
A proven path to a career in data science

At Springboard, we know how to get you a job in data science. With Springboard’s Data Science Career Track, you’ll master data science  with a curriculum built by industry experts. You’ll work on real projects, and get 1-on-1 mentorship from a data scientist.

LVL 75

Accepted Solution

Anthony Perkins earned 1000 total points
ID: 39280121
SQL Server 2012 AlwaysOn Availability Groups
You may want to look into the licensing cost, as that may be a determining factor.

Assisted Solution

Biofilminc earned 0 total points
ID: 39281498
Good point. Need an expensive license.

Author Closing Comment

ID: 39292536
The group will work but will cost too much

Featured Post

Build your data science skills into a career

Are you ready to take your data science career to the next step, or break into data science? With Springboard’s Data Science Career Track, you’ll master data science topics, have personalized career guidance, weekly calls with a data science expert, and a job guarantee.

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.

Join & Write a Comment

When you see single cell contains number and text, and you have to get any date out of it seems like cracking our heads.
Ready to get certified? Check out some courses that help you prepare for third-party exams.
The viewer will learn how to use a discrete random variable to simulate the return on an investment over a period of years, create a Monte Carlo simulation using the discrete random variable, and create a graph to represent the possible returns over…
Viewers will learn how the fundamental information of how to create a table.

627 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question