Dell PERC5/E and MD1000 performance tweaks
I fought for days, literally, to get an external SAS enclosure, the Dell MD1000, working with decent performance on RHEL5 x86_64 (PowerEdge 1950 III w/ two quad cores and 16GB RAM) . It’s a 15 disk enclosure, and this one is stuffed with 15 Hitachi 1TB SATAII drives which deliver a raw linear read speed [...]