See here is the thing, as you say yourself many are using far lower powered units already, for example:
The c60 i listed in post #1 is very common place, i just can't find any clarification of whether it will also encrypt well and offer http/sftp function for external access.
The higher powered e450 obviously thus also performs well for a basic nas and is documented as such, it is likely the safer bet if i can't clarify the c60's ability for http/sftp/encryption. However once more i can get no clarification other than it can nas and play 1080p video.
Both above options should suffice, the posts i read where also using raid5, which needs cpu, i will be using either raid0 or raid10 with offsite backups at my folks house, so no parity calculations. Whether this balances out my extra needs i do not know for sure, i suspect yes but need to be sure as i am not made of £££'s.
It is not going to be used for anything other than i stated in post #1 at most, i have a pc and laptop for desktop activities.
Therefore i suspect the hp unit you listed is complete overkill for my needs, which usually in a build would not matter except:
It must be low power usage, reliable, and flexible.
Low power is important to me, the turion in that hp has a tdp of 25 W, which is really good, and it's performance per watt is excellent. However compared to the 19 W of the e450 and 9 W of the c60 it no longer really competes unless these are too weak, i need to rule these out or confirm them before committing.
It is good to have the option, and thank you for pointing it out, should the e450 even be too small to cope with my needs then it becomes a real option, or rather it's turion chip on a custom build does. I am really looking to clarify if the equipment i listed will cope with it's intended use, or if other equipment can do a better job at a competetive or lower tdp. I was not entirely clear on that, i am sorry. I admit i am getting a bit lost in the planning of this, much more 'new information' to consider than a desktop build.
My needs are in this order:
Basic function > Reliabilty > Power > Additional function (routing, modem and torrents at most)
I have updated my original post to make this a bit more clear for new readers.
With regards to the router:
I am concerned a basic router wont be good enough, for starters i cant find a sensible price on a 10 Gb lan router which would remove NAS bottleneck, or rather redirect it to my disks (i think), so commercial router means gigabit LAN.
I am concerned too that an off the shelf unit may not cope running my NAS and ~whatever else~ i am doing on other pc's, unless i spend £££'s, which simply put i won't as i think i could build a dedicated c60 router for less in addition to the NAS, or circumvent my concerns below for less money.
I would love for the nas to deal with broadband connection and routing instead (purely as i love to muck around with things), however if it powers down when i am out i am in a pickle if i need files, it restricts me to an mATX motherboard (possibly a good thing, not sure), i also can't commit to the extra function until i know a low tdp chip can cope with my basic function intentions. However it would be fun to toy around with
What model d-link did you go for? I will consider using an external modem and a seperate switch too.
I had a look at freeNAS, i don't think it has enough appeal to pull me from a minimal debian installation though, unless it has function i ~need~ or should ~want~.