/dev/da0
	512         	# sectorsize
	4000787030016	# mediasize in bytes (3.6T)
	7814037168  	# mediasize in sectors
	4096        	# stripesize
	0           	# stripeoffset
	486401      	# Cylinders according to firmware.
	255         	# Heads according to firmware.
	63          	# Sectors according to firmware.
	ATA WDC WD40EFRX-68W	# Disk descr.
	WD-WCC4E0RDYC8E	# Disk ident.
	mps0        	# Attachment
	No          	# TRIM/UNMAP support
	5400        	# Rotation rate in RPM
	Not_Zoned   	# Zone Mode

I/O command overhead:
	time to read 10MB block      0.200318 sec	=    0.010 msec/sector
	time to read 20480 sectors   1.269738 sec	=    0.062 msec/sector
	calculated command overhead			=    0.052 msec/sector

Seek times:
	Full stroke:	  250 iter in   6.977741 sec =   27.911 msec
	Half stroke:	  250 iter in   5.486468 sec =   21.946 msec
	Quarter stroke:	  500 iter in   8.152311 sec =   16.305 msec
	Short forward:	  400 iter in   3.416476 sec =    8.541 msec
	Short backward:	  400 iter in   2.476914 sec =    6.192 msec
	Seq outer:	 2048 iter in   0.146929 sec =    0.072 msec
	Seq inner:	 2048 iter in   0.153457 sec =    0.075 msec

Transfer rates:
	outside:       102400 kbytes in   0.671586 sec =   152475 kbytes/sec
	middle:        102400 kbytes in   0.802291 sec =   127634 kbytes/sec
	inside:        102400 kbytes in   1.479847 sec =    69196 kbytes/sec