Ill borrow this topic for my own questions,
I've just decided to create my FreeNAS computer and been reading for the last two hours about ZFS.
As I see that this is something I want to invest in for my "digital home", cost is not directly an issue, but I always like to keep things most cost-effective and do not want things I will not use.
I'm looking to try to get around 8TB of storage, but want to be able to step this up to 12tb when need be.
For 8tb of storage with 2 parity discs, using 2tb hard drives we're looking at 6 disks (4*2+2) if Ive read things correctly.
I will want to have a case big enough to eventually hold up to 10 drives, and I have no problem going 19" instead of normal full-tower setup.
Regarding PSU, Chassi etc, I think I can find what suits me best myself, but the main question is really CPU and Memory, what do I really need?
This computer will _ONLY_ serve as a fileserver, I have other servers that does the rest of my linux need of compiling, web server, etc. This server will only serve files such as music, video, pictures, nothing else.
I would like to have faster write-speeds than what 1 drive is capable of by itself, latency is less of an issue, I would like, at least a small portion of the array to be able to write at around 120mb/s (since I have 1gbps internet at home). I will also like for the whole array to be encrypted, such as the way that when I boot the computer from being shut down I have to enter a password to mount the drive (for law purposes if something would have happened ;))
So this comes down to the choice of CPU + Memory. Go for a low-powered ATOM with 8gb ram to drive the whole shebang, or do you see it better to go for a low powered new XEON E3 (such as the E3-1220 with motherboards that can handle 12+gb of ECC ram.
I understand that ZFS is good with more ram, but will it be much difference for my home usage with 8gb ram (when using 8tb disk) and more ram when using > 8gb (I heard you should have around 1gb of ram/tb). maybe the low-powered atom/amd will drop off from choice because one of my requirements is encryption.
What's freenas' forums 5 cents on this?