Short for 'Storage Area Network', a SAN is a network for block level storage. One or more controllers present logical drives (called LUNs) to one or more hosts through a switched fabric.

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SQL Server Database File Groups on a SAN: Relevant or Not?

I am about to build out a new SQL Server and I was planning to make extensive use of file groups. I expect heavy growth, and heavy read/write to 5 different databases on this server. I was planning on ...
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Slow SQL Server authentication, but fast SAN, fast querying?

I am asking you after days of research but I think I don't have required skills to understand what is happening. I have a slow authentication on a SQL Server 2008R2, which leads to a timeout for the ...
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VM SQL Data and Log drives have one Block Size, SAN another. Issues?

Setting up a new SQL VM. What happens if VM data and log drives have 64K (recommended) block size but SAN (IBM DS3500 Express) was configured with a different block size? I want to avoid IO issues ...