paduck - The main difference in energy consumption between a DIY unit and a off the shelf unit would be the greater CPU heat generated - what does a Core 2 Duo consume? 30 more watts maybe? At $.1 / kwh that is $26.28 per year. The other difference would be additional fans, which if you ask me, is far worth the price, and I'm sure it wouldn't be large anyways. The real cost IMO is, how much is it worth to you to not lose your data if you lose the SINGLE fan on one of those nas-in-a-box devices and then drop a couple hard drives? Fans, power supplies & hard drives seem to be the most common computer hardware failures in my experience. But I see no reason why 4 hard drives in a ReadyNAS would consume less energy than 4 hard drives in a NasLite DIY setup.
I agree, performance is not a major issue for most folks, but if I spent $1k+ on a NAS setup and was getting 30 MBps, I'd be irritated.... on my 24" core 2 duo imac, copying over gigabit to my nas is far quicker than copying to local disk, not the other way around.
Killerbob - NASlite I'm sure has some support tho I doubt they would go as far as what your Infrant guys did. I've found the Linux community to be very helpful, almost all the time a few googles will turnup the answer to your question.
It is definitely more work going the DIY route, IMO it's well worth it if ones tech skills are up to par - if not, it'd be a great learning project, but for sure not everyone has the time or inclination.
But the main benefits IMO are greater reliability, redundancy, expandability, parts availability, ability to do RAID-6 or RAID-Z2 in the future (hopefully), and peace of mind knowing if my mobo goes out I didn't just lose my raid config. Huge performance gains are just icing on the cake. You can do hot swap SATA with linux, the supermicro chassis has 15 hot swap bays...
Now if you are max'ed out on a RAID-5 with 4 (5?) disks in a ReadyNAS, and you want to upgrade to larger disks, is that possible w/o having to backup all your data (onto what? another readynas?), rebuild the RAID with new drives and restore? So how do you upgrade your ReadyNAS? Thats when 10 bays comes in handy...
BTW - I see 1.5 TB ST31500341AS are not on the ReadyNAS compatibility list (
http://www.readynas.com/?page_id=82), so if you use them, assuming they work, you may not get support...yet another non-issue w/ DIY.
Rob