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Scalability and redundant windows web environment

We have a number of .Net web applications that our clients use, all hosted on our servers.
We have a web site on a single Dell server running windows 2003 and a separate database server running windows 2003 and SQL Server 2000.
As well as the database there are also a lot of files being uploaded and downloaded via the .Net applications and these are stored on the file system of the web server currently.

We are growing in customers using our .Net applications on this environment and now want to add additional scalability and redundancy.
I have read different things about SAN, shared disk arrays, Network attached storage, clustering, replication, load balancing but to be honest I am confused as to the correct way to go.

I am looking for an expert in this field to suggest how to add redundancy so there is less chance of any down time and scalability so we can grow as our client base grows. I don’t have an exact budget on this but I am looking for a solution that won’t cost an arm and a leg now but we can add hardware as we grow.

Not sure if this is the right area for this question, if not please let me know where would be better.

Thanks
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galtee25
Asked:
galtee25
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mcp_jonCommented:
What we have here, where I work, is a Frontend / Backend Configuration, explained :

1 - SQL 2000 Enterprise CLUSTER attached to Storage Area Network.

10 Web Servers, going back to the Shared SQL Cluster to get data from the customers databases.

2 Alteon "Network Load Balancing" Hardware Based in order to split traffic among the WebServers., if this is too expensive, you can always go for the Windows NLB, Not fond of it myself, because it's much more cheaper. . .

Off course, we also have AD's, in another Vlan, The Exhange Servers, and so on . . .

Best Regards !
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galtee25Author Commented:
Thanks for the reply. I have heard that using a Storage Area Network can be the most expesive way to go. What hardware are ye using for this and any idea of costs?

Do you have replication for the file system or are the files also on the SAN?
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mcp_jonCommented:
Depending on your needs, you can go from the Dell /EMC CX300, with dual path Fiber channel, 2 Gbps, up to the Symmetrix DMX3000, also from EMC. Check for the CX300 at Dell 's Website, at :
http://www.dell.com/content/products/productdetails.aspx/pvaul_cx300?c=us&cs=555&l=en&s=biz " . (Don't Know the Price, Sorry :( )

The only replication I have for the File Systems is Mirror on EACH and EVERY Server, Clustered, Web Server, or AD. ( Everything is Mirrored, just to feel safe ! )

Best Regards !

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galtee25Author Commented:
Thanks a lot for you input to this question mcp_jon. I was hoping to get an alternative to SAN answer but think I may have posted this in the wrong area. I will ask to have it moved to Web Dev to see if I can get more help as I know there any many other alternatives.
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mcp_jonCommented:
No need to thank !

Best Regards !
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mcp_jonCommented:
Not much to say here  . . .

Best Regards !
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mcp_jonCommented:
Proceed !

Best Regards !
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Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

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