I've put together one of those Backblaze Storage Pods populated with 45 3-TB drives. Have installed 64bit FreeNAS 8.3.0-RELEASE-p1. and 8 GB ECC UDIMMs. Then I hear that zfs needs about a gig/TB of disk in the zfs pool(s). Followed by the zfs wikipedia writeup saying that's old news and its not really true at more recent versions. The super micro X8SIL MB has an intel core i3 CPU 540, limiting the UDIMM max to 16 GB in its 4 slots. Is the 8 GB I've already got sufficient for this amount of zfs storage? Will 16 GB make that much of a difference? Should I swap the CPU for a Xeon so as to get the larger 32Gb max?