> Ok, the two 72GB drives are set up RAID1, and the four 146GB drives are set up > striped, RAID0. The two 72's are on channel 1, and the four 146's are on > channel 2. Under CentOS 4 with the hardware RAID running, the four 146's > (hardware RAID0) have a raw read performance of abut 150MB/s, which I thought > was pretty good. > > Now, the box has dual 3GHz Xeons (it needs them for the pulsar dedispersion > algorithm's FFT's, particularly when we refine it to do dedispersion in > real-time). With FC5 installed, and the four 146's running software RAID0, I > am getting nearly 240MB/s throughput (with other processes running). The box > feels significantly more responsive; the GNUradio build with the PERC running > in hardware RAID mode took about thirty minutes; with it running in LSI MPT > SCSI mode it's taking half that time to build and install. > Just thought I drop this data point in. /me wonders whether that Dell RAID system was using Intel i960 cpus :P