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Caching in Storage Spaces Direct

    Pergunta

  • I am evaluating a possible storage solution based on Storage Spaces Direct.
    On page https://docs.microsoft.com/en-us/windows-server/storage/storage-spaces/understand-the-cache I read that I can use different kind od SSD disks for caching.
    Is there any way to use RAM for even more efficient caching?
    Regards
    marius



    sábado, 14 de julho de 2018 10:43

Todas as Respostas

  • You can configure CSV cache on top of S2D managed virtual disks / CSVs. See: https://blogs.msdn.microsoft.com/clustering/2013/07/19/how-to-enable-csv-cache/ Bad news are - it’s read-only so don’t expect much of it... There’s no RAM-based write-back cache @ block level in Windows.

    Cheers,

    Anton Kolomyeytsev [MVP]

    StarWind Software

    Profile:   Blog:   Twitter:   LinkedIn:   

    Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

    domingo, 15 de julho de 2018 09:39
  • There is only CSV in-memory read cache, indeed:

    https://docs.microsoft.com/en-us/windows-server/storage/storage-spaces/csv-cache

    Honestly speaking, its usability is very much in question. Plus, it works for some read-intensive workloads, but not for others.

    If you really wanna play with caching, I would recommend checking Starwind free:

    https://www.starwindsoftware.com/starwind-virtual-san-free

    In addition to being a truly feature-rich solution (server-side memory write-back cache, iSER, to name only a few), it doesnt require Datacenter licenses for building up a clustered storage. IMHO, this is the best alternative to s2d so far.

      



    • Editado LaMerk quarta-feira, 18 de julho de 2018 07:27
    quarta-feira, 18 de julho de 2018 07:15