XigmaNAS

This does not seem to be stable. I guess I will try it sometime down the road.
In searching.. another person posted with same issue.
http://ivoras.net/blog/tree/2013-02-22. ... 4free.html

I cannot use a main storage system if it's not going to be stable.
24x 1 TB Hitachi Drives
4x SSD
Tyan Motherboard
16GB Ram ECC Reg
3x Sat2Mv8 controllers
Broadcom and Intel Nics

that is a lot of stuff in which the instability can hide
one loose drive cable is all it takes

start by removing the 3 marvel controllers and use the onboard controllers to connect some hds.
then see if the system is stable.

if start adding the controllers one by one.
if not start removing other stuff. like ram sticks, backplane etc..

use zfskerntune, to tune your NAS to 16GB ( a lot of reboots must be due bad tuned RAM)