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  1. J

    ESXi 6.5 with ZFS backed NFS Datastore - Optane Latency AIO benchmarks

    Doing some benchmarking for reducing latency in AIO - ESXi 6.5 to OmniOS ZFS backed NFS datastore. The hardware is: Supermicro X10DRi-T 2 x Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz 128 GB RAM DDR4 (@ 1866 Mhz - cpu limited from 2133Mhz) 3 x 9211-8i in HBA IT mode /w P20.0.0.7 firmware 1 x...
  2. J

    ESXi VMDK on ZFS backed NFS - thin provisioning

    Just wondering what people have to say about Thin provisioned VMDK hard disks on NFS datastores, specifically is holepunching or some other similar function good to do after zeroing out free space in a VM? eg after running a SDelete -z to zero out free space I previously wasn't using...
  3. J

    AIO OmniOS 1500 vs 9000mtu open-vm-tools

    Couldn't figure out how to set MTU to 9000 in Omnios r151028 with ESXi 6.5 and open-vm-tools.. Started from older napp-it-san024 and upgraded to r151028. Already had the following set: TxRingSize=4096,4096,4096,4096,4096,4096,4096,4096,4096,4096...
  4. J

    New Lsi SAS9200-8E pciex8 card - 6Gbps external X2 SFF-8088 $65.00

    Just ordered one of these new cards off of Amazon: Lsi SAS9200-8E $65.00 & FREE Shipping (normally $389?)...
  5. J

    Dell S3700 SSDs - 3Gbps version

    Just a heads up as I recently purchased some 400GB versions: Check your versions, just found out the Dell part is 3Gbps, and the performance isn't as good as the regular Intel branded version.. grr. It was a Dell Part# 06XJ05 Device Model: INTEL SSDSC2BA400G3T SATA Version is: SATA 2.6, 3.0...
  6. J

    Intel i350 NIC and SR-IOV in ESXi5.5

    I was trying to enable the SR-IOV support on my Intel i350 dualport NIC built into my X10DRi motherboard but wasn't having much luck. SR-IOV is supported on the Motherboard i350 NIC, as I checked with Supermicro. Just a warning that as of this writing it's not supported in ESXi 5.5 up to the...
  7. J

    OpenZFS (OmniOS) write throttle tuning - NFS benchmarking 4k@QD32

    I just noticed something that may help others. ZFS write throttling can kick in to slow down your write performance. I ran into this while benchmarking when I reduced the memory given to my OmniOS VM from 16GB down to 13GB. The pool I was benchmarking is mirrored striped 2TB RE4 Drive pool...
  8. J

    ESXi 5.5 and ZFS - sync, async NFS + iSCSI powerloss data security

    Here's a table of safety for powerloss by datastore type for ZFS backed NFS and iSCSI storage, and also guest VM connected/mounted storage. Why you should care: Operating Systems filesystems, and databases will perform sensitive writes in "write through" mode in a synchronous manner, which...
  9. J

    ESXi 5.5 vswitch network setup - All-in-one

    I'm using this ESXI network setup in my test server running: - OmniOS as the NFS share - ESXi local vSwitch to connect OmniOS NFS share to ESXI for datastore - 9000 MTU for Jumbo Frame support on storagenet vswitch and 2nd OmniOS nic. - 1500 MTU for regular traffic to smb shares to other outside...