[BlueOnyx:07271] Re: Sata300 Disk Transfer Speeds

[Jeff Folk]

On May 11, 2011, at 10:42 PM, KA0JON wrote:
> 
> Looks like I might have it set right after all
> These are 7200 rpm Seagate drives
> 
> David

My 5400 RPM WD WD15EARS (3.5" 1.5 TB) Green drives don't fair as well...

[root at sme ~]# /sbin/hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   2232 MB in  2.00 seconds = 1114.95 MB/sec
 Timing buffered disk reads:  250 MB in  3.02 seconds =  82.89 MB/sec
[root at sme ~]# /sbin/hdparm -tT /dev/sdb

/dev/sdb:
 Timing cached reads:   2396 MB in  2.00 seconds = 1197.65 MB/sec
 Timing buffered disk reads:  282 MB in  3.02 seconds =  93.34 MB/sec
[root at sme ~]# /sbin/hdparm -tT /dev/sdc

/dev/sdc:
 Timing cached reads:   2216 MB in  2.00 seconds = 1107.41 MB/sec
 Timing buffered disk reads:  284 MB in  3.01 seconds =  94.38 MB/sec

This is RAID5... The other (with laptop drives) was RAID 1+0

Jeff