Crucial MX500 have a known issue with FreeNAS.
hmm. tnx for pointing this out.
reading this thread...
Good day, I have a feeling I might be missing around 1TB of usable space on my CIFS Share. I am running Freenas 9.10. I got 4 x 4TB drives running in RaidZ1. when looking at Storage -> Volume , it looks like this: The top volume has 3.4TB available, but the second volume only has 2.2TB...
www.ixsystems.com
... I must confess that I have forgotten about that 50% rule (for mirrors) and other general considerations like block size.
With 47% usage our current storage pool (of 4TB) is scratching on that limit, but doing no snapshots and basically adding data, overwriting* only a small amount of working files at the moment I don't think we would be affected by any performance loss going over 70% but that's a wild guess only.
* I learned zfs will not overwrite but choose a new location for the data block then because of its copy-on-write behavior.
typical folder is looking like that, it's really mixed, doing 3d stuff, single files can to be larger (up to 2Gb):
As I understand MIRRORs are better in handling such data?
AND/BUT:
The plan to use snapshots will fragment the drive because of the releasing will force me to stick to that 50% rule for mirrors, right?
so: maybe I better stick with the spinning drives and get more raw space for the money.