• currym (6/6/2011)


    Brad,

    I appreciate your work! I do have a question though.

    With respect to monitoring SAN activity via an OS source (perfmon/sysmon), a while back I was discouraged from relying on anything but expensive proprietary SAN software - likely by a vendor. As a government DBA managing a couple thousand SQL instances, I'm always trying to save your money. 🙂 If you have a moment, would you mind speaking or linking to that apparent misdirection?

    Again, many thanks,

    Patrick

    Not all of the built-in IO-related performance monitor counters work well if SQL Server is using a SAN for data storage, although some of them do. Two articles that discuss this topic (and their are many more) include:

    http://msdn.microsoft.com/en-us/library/cc966412.aspx

    http://www.sqlskills.com/BLOGS/PAUL/post/How-to-examine-IO-subsystem-latencies-from-within-SQL-Server.aspx

    Brad M. McGehee
    DBA