I should like an archival file server -- data integrity, not speed, is the paramount goal. ZFS seems like the optimal foundation for such a server, but I've a number of concerns. Foremost are the hardware requirements. Most enthusiasts will urge a capable cpu and 8+ GB of memory to run ZFS, but are these strictly necessary? I don't really care about superfast data transfers and responsiveness (though I do want sufficient bandwidth to play HD video on a client). I realise without 6+ GB of memory, ARC won't do me much good, but I'm not employing ZFS for that feature. What exactly would happen to a ZFS file server that only has, oh, 2 GB of RAM? I am concerned with data integrity, and ZFS's checksums could use a respectable cpu, but would they completely overwhelm, say, an AMD K8 cpu, eg the Athlon X2 4800+? As you can probably guess by now, my preference would be to recycle obsolescent tech in this server. Running ZFS pools of RAIDZ arrays will increase the cpu load even more, but again, how bad will it really be if it's a light use home server? At most this system is going to serve 1-3 clients (the vast majority of the time it will be serving 0!). Additionally, is it still inadvisable to run ZFS on 4K-sector hard drives? Note: if this discussion is better hosted under a different forum category, please migrate or advise as necessary.