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    What's the best way to benchmark maxCache 3.0 with SSDs?

    Firstly, thanks in advance to anyone who finds time to look at this.

    We're a software development company and previously outsourced the HW side of business but now we're looking into building our own private cloud. We recently purchased a few servers, one of which is supposed to act as a central storage. The specs are as follows:

    Chassis: CSE-826BE16-R920LPB
    Motherboard: Supermicro X10SLL-F CPU E3-1200v3,Intel C222, 2GbE, Up to 32GB DDR3 ECC,2xSATA3,4xSATA2, 4xDDR3 IPMI sn: ZM13AS016829
    1x CPU Intel Xeon E3-1220v3 - 3.1GHz, 8MB cache, 4core, HT, LGA1150, 80W
    1x heatsink SNK-0046A4 Activ 2U
    4x 8GB Samsung M391B1G73QH0-CK0 1600MHz DDR3 ECC Unbuffered 2R8
    2x SSD 80GB Intel DC S3500 Series 2,5" SATA3, read 340 MB/s, write 100 MB/s
    10x HDD 2TB Seagate Constellation ES.3 ST2000NM0023 3,5" SAS2, 7200rpm, 128MB

    The Seagate drives are set up as RAID 6 array. The SSDs are in RAID 1 and act as maxCache container which we turn on and off using maxView Storage Manager.

    My first question - does this configuration make sense for a central storage of a private cloud where we plan to have other 3 compute nodes with two CPUs and lots of RAM on them?

    My second question - would a similar configuration with less HDDs make sense for a MySQL database server for a reporting system with many concurrent requests?

    My third question - I tried to measure performance of this server with and without SSD cache (maxCache). The best tool I came across was iozone which produced the attached charts (iozone -a -g 8G). I am totally puzzled as it looks like the performance with maxCache is in most cases lower than without it.

    I was wondering if iozone is a good way to test for real-life scenarios or if I'm doing this all wrong.

    Any help would be much appreciated!
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