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    SATA on Nutanix. Some experimental data.

    Published: (Updated: ) in Nutanix, , , , by gary. Leave a Comment on SATA on Nutanix. Some experimental data..

    The question of  why  Nutanix uses SATA drive comes up sometimes, especially from customers who have experienced very poor performance using SATA on traditional arrays. I can understand this anxiety.  In my time at NetApp we exclusively used SAS or FC-AL drives in performance test work.  At the time there was a huge difference in performance between […]

    Impact of Paravirtual SCSI driver VS LSI Emulation with Data.

    Published: (Updated: ) in Storage Performance, , , , by gary. Leave a Comment on Impact of Paravirtual SCSI driver VS LSI Emulation with Data..

    TL;DR  Comparison of Paravirtual SCSI Vs Emulated SCSI in with measurements.  PVSCSI gives measurably better response times at high load.  During a performance debugging session, I noticed that the response time on two of the SCSI devices was much higher than the others (Linux host under vmware ESX).  The difference was unexpected since all the devices […]