I have a storage pool setup with to spaces configured. One with is setup with Parity and one is a Simple space. Everything was running fine for a couple weeks, but then suddenly the performance dropped to an unusable speed. Oddly enough the performance drop impacts reads on the Simple Space, not writes. The read speed on the Parity Space is OK, but the write speed is a little slow, but not unbearable. I had not officially tested the speed before, so I don't have the exact measure of performance degradation, but it is clear from the test that it is sub-par. Streaming movies from the server (they are in my simple space) is not even possible as a movie will buffer many times throughout. Below are performance tests on both the Simple and Parity spaces. The only change in config is one of my drives failed, which was primarily serving a third Simple Space, which is now offline. Should I look to move my data to another drive, and start the storage pool over from scratch? This is not ideal, but now that I have all of my drives with bigger sizes I don't see me expanding much more beyond that.
Simple Space :
Parity Space :