ZFS on Windows Server
After doing an exhaustive series of benchmarks I came to the conclusion that Storage Spaces parity schemes are practically useless. Even with 24 SSDs they provide negligible performance that makes them an unworthy alternative even for archiving purposes. You can see the numbers here:
Therefore I suggest Microsoft to join the OpenZFS project and incorporate RAID-Z in a future release of Windows Server Storage Spaces. I know it sounds totally ridiculous at first, but after checking out the benchmarks I'm pretty sure you'll consider the numbers much more ridiculous.
In my humble opinion, this awesome feature would render Storage Spaces pretty much the best available storage solution available.
The tests quoted are almost five years old. Storage Spaces Direct performance has dramatically improved and we demonstrated 13.7 Million IOPs. Details here: https://blogs.technet.microsoft.com/filecab/2018/10/30/windows-server-2019-and-intel-optane-dc-persistent-memory/
Storage space write performance in parity mode is absolutely catastrophic. It don’t really get over 70MB/s sequential write on ws2019 where I get over sustainable 300MB/s with a hardware RAID5. It may have improved from earlier versions but it is still unusable.
Except that performance is still garbage (except for some people after an incredible amount of fine tuning it's barely ok). See here for example: https://social.technet.microsoft.com/Forums/windowsserver/en-US/64aff15f-2e34-40c6-a873-2e0da5a355d2/parity-storage-space-so-slow-that-its-unusable?forum=winserver8gen&prof=required
My own experiements on different systems with different hardware and different usecases back this. Performance is nowhere near where it should be.
Read the Whole Thing commented
QWERTY keyboard existed for good reasons at the time.
Dan Cook commented
I've tested ZFS (via Freenas) on very old hardware. It is considerably faster than 'storage spaces' (Even on Server 2016TP4)