Hi,
Here is the output of an un-formatted 250GB WD RE3 drive.
Code:
ad12: 239429MB <WDC WD2502ABYS-01B7A0 02.03B02> at ata6-master SATA300
> diskinfo -c -t /dev/ad12
/dev/ad12
512 # sectorsize
251059544064 # mediasize in bytes (234G)
490350672 # mediasize in sectors
486459 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
ad:WD-WCAT1A421098 # Disk ident.
I/O command overhead:
time to read 10MB block 0.095959 sec = 0.005 msec/sector
time to read 20480 sectors 2.701192 sec = 0.132 msec/sector
calculated command overhead = 0.127 msec/sector
Seek times:
Full stroke: 250 iter in 4.623722 sec = 18.495 msec
Half stroke: 250 iter in 3.267142 sec = 13.069 msec
Quarter stroke: 500 iter in 5.422215 sec = 10.844 msec
Short forward: 400 iter in 2.438332 sec = 6.096 msec
Short backward: 400 iter in 1.147096 sec = 2.868 msec
Seq outer: 2048 iter in 0.341796 sec = 0.167 msec
Seq inner: 2048 iter in 0.291963 sec = 0.143 msec
Transfer rates:
outside: 102400 kbytes in 0.903144 sec = 113382 kbytes/sec
middle: 102400 kbytes in 1.016205 sec = 100767 kbytes/sec
inside: 102400 kbytes in 1.584498 sec = 64626 kbytes/sec