On 06/17/2010 10:39 AM, Eugen Leitl wrote: > On Thu, Jun 17, 2010 at 10:57:53AM +0200, Andre Timmermann wrote: > >>> Something which can be adressed with SSDs. >> >> Of course this can be addressed with SSDs. Unfortunately they are VERY >> expensive right now, so it is simply not economically advantageous. > > It is possible to have the both of the worlds with hybrid filesystems. > Btrfs could be one eventually, and there's a rudimentary zfs port > for Linux in the works. No idea which will make the cut first. > > Of course you could export a hybrid zfs pool as an iSCSI target, > but this runs contrary to my philosophy (achieving high peformance > and availability economically, by using lots of cheap, high-efficiency > hardware -- the current sweet spot is currently Supermicro/Atom, but > I'm hoping for ARM). Tell me about it. I really want a Cortex A9 *TX motherboard with DIMM sockets. There are a few out there that sport PCI/PCIe slots, but the closest I could find still only has soldered-on RAM (512MB) with no DIMM sockets for increasing it. :-( If you find some that tick that last box, I'd very much like to hear about it. I've actually considered seeing what it would cost to get a custom motherboard made in a small production run (say, 1,000 units), but to do it from scratch would take a lot of R&D (expensive), and I doubt the manufacturer of the 512MB board would consider producing a modified version for such a small run (most ARM stuff is built in mind-boggling volumes for the embedded market). Gordan