# diskinfo -t /dev/amrd0
/dev/amrd0
512 # sectorsize
110849163264 # mediasize in bytes (103G)
216502272 # mediasize in sectors
13476 # Cylinders according to firmware.
255 # Heads according to firmware.
63 # Sectors according to firmware.
Seek times:
Full stroke: 250 iter in 1.614163 sec = 6.457 msec
Half stroke: 250 iter in 3.750013 sec = 15.000 msec
Quarter stroke: 500 iter in 4.191080 sec = 8.382 msec
Short forward: 400 iter in 1.083575 sec = 2.709 msec
Short backward: 400 iter in 3.375540 sec = 8.439 msec
Seq outer: 2048 iter in 0.892792 sec = 0.436 msec
Seq inner: 2048 iter in 0.938676 sec = 0.458 msec
Transfer rates:
outside: 102400 kbytes in 6.334387 sec = 16166 kbytes/sec
middle: 102400 kbytes in 6.364501 sec = 16089 kbytes/sec
inside: 102400 kbytes in 6.312508 sec = 16222 kbytes/sec