Boxee box power supply voltage1/4/2024 That gives great efficiency because it avoids a second dc-dc conversion to provide the regulated 12v rail for the board but it also means that the 12v input to the dc-dc psu must be very well regulated. They pass it unaltered to the motherboard. The 12v input dc-dc psu's don't regulate the 12v rail. Interesting idea but that would be very, very bad. I'd probably do a cheap AMD sempron based system now, as I could do the motherboard, proc and ram for just over $100. I bought a micro ATX atom 330 board, but those are basically gone these days. I would recommend doing a linux software raid5 (MD RAID) and back up important data (family photos etc.) through an Amazon cloud storage service like Jungledisk or simp[ly to some external USB hard drives. Openfiler cannot currently handle new hard drivers with 4K sectors correctly. Unraid cost some money ($80-$120) is too slow for multiple streams of high-def media because it only is reading off of one drive at a time. When btrfs becomes a true replacement for ZFS in a couple of years, we won't be having these discussions so much anymore. FreeNAS is moving from FreeBSD for this reason (and the presence of some other toolschains for software development, which will help in adding / fixing features. Hardware support for a bunch of popular sata / raid cards is not there. Opensolaris is dead, FreeBSD has much more limited hardware support and slower pace of innovation. If you planning on building a NAS type box with expandability (eventually a bunch of drives as your media collection grows), I wouldn't pidgeon hole yourself by doing an ITX case (unless you factor in the price of later doing eSATA port multiplier and expansion chassis) or a DC - DC power supply.Īlso, while ZFS / RAIDZ has some very cool features, there are a few gotchas. You introduce one more point of failure, and lose efficiency with each conversion. Why take 120 v AC, then convert it to DC< then once again go DC-DC, without any sort of line conditioning I think its a waste to do it that way. If this where an automotive based project where 12v DC is readily available I could see the viability of a DC-DC supply. From a tinkerers and an electronics students perspective, youre either gonna have to buy a premade, or spend a decent amount or sacrifice somewhere. I looked into diy battery powered backups. 1) Who wants a lead acid battery just laying about ?ġC) Awesome so now you got 40$ in a dc-dc PSU, another 40 in a battery that wasnt designed to be used that way and probably wont last long like that, another 40 in an el cheapo battery charger thats absolutely killing any hope of efficiently using that wall outlets power and whatever the enclosure costs.ĢB ) Nice, so youre gonna spend a good chunk of change on a good battery and kill it with a crap chargerģA) Heck no Ill buy one of those sweet chargers to go along with it.ģB) Congratulations, you just went from a $20 dollar ac-dc power supply to a $250 dc-dc solution.
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