No, 130 MB/sec is simply not achievable with a single disk.
Telcontar:~ # hdparm -tT /dev/sdc
/dev/sdc: Timing cached reads: 12930 MB in 2.00 seconds = 6471.97 MB/sec Timing buffered disk reads: 370 MB in 3.01 seconds = 123.02 MB/sec
Yes, the maximum I get is 126, I suppose better hardware can get more speed.
Not for SATA: According to Tom's Hardware the fastest SATA disk is 127 MB/SEC. http://www.tomshardware.com/charts/3.5-hard-drive-charts/Maximum-Write-Trans... But that is measured at the fastest part of the disk (the outer cylinders). As you move towards the center, you see a significant drop off because the rpms is fixed, but the data per rotation drops off significantly near the spindle. In the real world, I have never seen a drive run at faster than 6GB/min for any extended time. That's 100MB/sec. I suppose if you only need a few GB of capacity and you restrict your usage to the "start" of the disk then you might get close to 130MB/sec for real. ie. cylinder 0 is on the outer edge. ==> SAS Tom's says they are indeed faster: http://www.tomshardware.com/charts/enterprise-hard-drive-charts-2010/Streami... So the OP could look into a Cheetah and see if it will work. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org