Currently configuring a 10 drive (2GB spindles) array with a 960GB NVMe SSD for L2ARC and 400GB Intel 750 NVMe SSD for SLOG. 128GB ram, 8 core Intel (forget which one.) 10gbE.
This will be used primarily for Vmware/Vsphere storage, using NFS. (IIRC, iSCSI is only faster because use uses unsafe async writes by default? Enabling sync on iSCSI makes it the same or slower than NFS when used with Vmware?)
I see it recommended often that Raid 10 is preferred over RaidZx for Vmware, however since everything will be written synchronously, going through the SLOG/ZIL, is there really any noticeable performance improvement over RaidZ2? Isn't the SLOG device (or network interface if SLOG is fast enough) the bottleneck for sync writes? What am I missing?
This will be used primarily for Vmware/Vsphere storage, using NFS. (IIRC, iSCSI is only faster because use uses unsafe async writes by default? Enabling sync on iSCSI makes it the same or slower than NFS when used with Vmware?)
I see it recommended often that Raid 10 is preferred over RaidZx for Vmware, however since everything will be written synchronously, going through the SLOG/ZIL, is there really any noticeable performance improvement over RaidZ2? Isn't the SLOG device (or network interface if SLOG is fast enough) the bottleneck for sync writes? What am I missing?