On Mon, 12 Jan 2004, Ricky Beam wrote:
I currently have a $250 eurologic fibre channel shelf (FC7 or FC9) with dual power supplies and 7 146G seagate (300$ each) heating my apartment :-) The shelf is easy to find. Wiki would want new drives vs. the OEM pulls I'm using which doubles the cost of the drives. (they aren't easy to find used anyway.) That's just under 1TB. Each drive can stream ~60MB/s. Yes, EACH. (all the way to bus saturation: 2Gb/s)
Yes, if one needs throughput, IDE or SCSI will hardly matter, and the former will be cheaper. But it seems that our disk subsystem is hampered by latency - lots of small reads looking for DB indexes, articles, things that got pushed out from the cache, all of them from multiple concurrent threads. Short of a pure ramdisk, SCSI raid is still the leader in this deparments :)
Alfio