[root@smart-serv] (/dev/fd) %diskinfo -vt ad4
ad4
512 # sectorsize
80026361856 # mediasize in bytes (75G)
156301488 # mediasize in sectors
155061 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
Seek times:
Full stroke: 250 iter in 5.785304 sec = 23.141 msec
Half stroke: 250 iter in 4.043090 sec = 16.172 msec
Quarter stroke: 500 iter in 6.447212 sec = 12.894 msec
Short forward: 400 iter in 2.396722 sec = 5.992 msec
Short backward: 400 iter in 3.256960 sec = 8.142 msec
Seq outer: 2048 iter in 0.455031 sec = 0.222 msec
Seq inner: 2048 iter in 0.595476 sec = 0.291 msec
Transfer rates:
outside: 102400 kbytes in 2.485421 sec = 41200 kbytes/sec
middle: 102400 kbytes in 1.991625 sec = 51415 kbytes/sec
inside: 102400 kbytes in 3.260551 sec = 31406 kbytes/sec
[root@smart-serv] (/dev/fd) %diskinfo -vt ad0
ad0
512 # sectorsize
80060424192 # mediasize in bytes (75G)
156368016 # mediasize in sectors
155127 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
Seek times:
Full stroke: 250 iter in 7.736239 sec = 30.945 msec
Half stroke: 250 iter in 7.946960 sec = 31.788 msec
Quarter stroke: 500 iter in 16.618445 sec = 33.237 msec
Short forward: 400 iter in 12.306547 sec = 30.766 msec
Short backward: 400 iter in 12.791753 sec = 31.979 msec
Seq outer: 2048 iter in 8.237969 sec = 4.022 msec
Seq inner: 2048 iter in 8.885010 sec = 4.338 msec
Transfer rates:
outside: 102400 kbytes in 36.944848 sec = 2772 kbytes/sec
middle: 102400 kbytes in 29.587663 sec = 3461 kbytes/sec
inside: 102400 kbytes in 19.844300 sec = 5160 kbytes/sec