The most interesting part will be, of course, to see how those stand against Storage Spaces.On FreeNAS (FreeBSD) theres no ATTO Disk Benchmark, obviously, but theres Iozone.Its not quite the same because it generates various request lenghts for each chunck size, so I had no better idea than to just average those values.If you think this needs to be improved, just let me know in the comments section.
For your reference, Ive also made the raw numbers available here. Of course, reads are the least of our problems so check out writes again. This chart also includes RAID-Z3, which has no Storage Spaces equivalent (its basically triple parity) so its missing from the previous comparisons. Some people on freenas even suggested that Im limited by one or more of the buses, but its hard to believe given that I connect to the 24 SSDs via 24 SAS ports, those are split between two SAS3 HBA cards, and those 2 cards both go to a PCI-E 3.0 x8 slot. I simply dont see a bottleneck here. I expressed in my previous post that the traditional parity levels are basically broken. I do believe that Microsoft should seriously consider the idea of incorporating the architecture of ZFS (if not itself) into a future release of Windows Server Storage Spaces. ![]() ![]()
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February 2021
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