On Mon, Feb 25, 2013 at 10:33 PM, Tiernan OToole <lsmart...@gmail.com>wrote:
> Thanks all! I will check out FreeNAS and see what it can do... I will also > check my RAID Card and see if it can work with JBOD... fingers crossed... > The machine has a couple internal SATA ports (think there are 2, could be > 4) so i was thinking of using those for boot disks and SSDs later... > > As a follow up question: Data Deduplication: The machine, to start, will > have about 5Gb RAM. I read somewhere that 20TB storage would require about > 8GB RAM, depending on block size... Since i dont know block sizes, yet (i > store a mix of VMs, TV Shows, Movies and backups on the NAS) I am not sure > how much memory i will need (my estimate is 10TB RAW (8TB usable?) in a > ZRAID1 pool, and then 3TB RAW in a striped pool). If i dont have enough > memory now, can i enable DeDupe at a later stage when i add memory? Also, > if i pick FreeBSD now, and want to move to, say, Nexenta, is that possible? > Assuming the drives are just JBOD drives (to be confirmed) could they just > get imported? > > Thanks. > > > Yes, you can move between FreeBSD and Illumos based distros as long as you are at a compatible zpool version (which they currently are). I'd avoid deduplication unless you absolutely need it... it's still a bit of a kludge. Stick to compression and your world will be a much happier place. --Tim
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