/dev/da3
	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-WCC4E2EKJ8A1	# 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      0.074399 sec	=    0.004 msec/sector
	time to read 20480 sectors   1.267045 sec	=    0.062 msec/sector
	calculated command overhead			=    0.058 msec/sector

Seek times:
	Full stroke:	  250 iter in   6.623574 sec =   26.494 msec
	Half stroke:	  250 iter in   5.422532 sec =   21.690 msec
	Quarter stroke:	  500 iter in   8.602372 sec =   17.205 msec
	Short forward:	  400 iter in   3.436417 sec =    8.591 msec
	Short backward:	  400 iter in   3.183365 sec =    7.958 msec
	Seq outer:	 2048 iter in   0.152304 sec =    0.074 msec
	Seq inner:	 2048 iter in   0.253791 sec =    0.124 msec

Transfer rates:
	outside:       102400 kbytes in   0.709416 sec =   144344 kbytes/sec
	middle:        102400 kbytes in   0.830429 sec =   123310 kbytes/sec
	inside:        102400 kbytes in   1.444175 sec =    70906 kbytes/sec