• Right, so the TempDB usage is not due to the reorg using TempDB, it's the snapshot isolation and the row version store.

    To be honest, I'm not 100% sure how the row version store interacts with multiple files.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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