I recently had a bit of a scare with my software RAID 5 array becoming degraded. I was able to add the drive back into the array, but it got me thinking about trying something different.
I am currently running the file server along with my DNS, web server, plex media server, some VM's, and some other stuff all on Ubuntu 12.04 and I'm using mdadm for the software RAID 5. My hardware is an AMD FX-4100 quad core, 8 GB of RAM, and 3 x 1.5TB "green" drives. Recently, however, I have been looking into FreeNAS and the Z-RAID options. Another possibility is for me to just upgrade my RAID 5 array to RAID 6, but keep the OS and everything else the same.
This is for home use, but most of the data on there is not replaceable (home videos and pictures) we keep other backups, but that is a manual solution, I would rather keep everything automatic.
One concern I have with Z-RAID is with the performance. I have read that the performance is quite a bit lower than with regular RAID... is this true if the hardware is sufficient, as I assume mine is?
Building a dedicated FreeNAS system would obviously require building another box so I can continue to run my other server applications, and I'm trying to determine if it is worth it from a data integrity standpoint.