/dev/da4
	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-68N	# Disk descr.
	WD-WCC7K6KHX69A	# 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      0.059797 sec	=    0.003 msec/sector
	time to read 20480 sectors   1.536897 sec	=    0.075 msec/sector
	calculated command overhead			=    0.072 msec/sector

Seek times:
	Full stroke:	  250 iter in   6.864577 sec =   27.458 msec
	Half stroke:	  250 iter in   4.727622 sec =   18.910 msec
	Quarter stroke:	  500 iter in   7.871223 sec =   15.742 msec
	Short forward:	  400 iter in   2.458081 sec =    6.145 msec
	Short backward:	  400 iter in   3.543042 sec =    8.858 msec
	Seq outer:	 2048 iter in   0.163557 sec =    0.080 msec
	Seq inner:	 2048 iter in   0.159794 sec =    0.078 msec

Transfer rates:
	outside:       102400 kbytes in   0.611220 sec =   167534 kbytes/sec
	middle:        102400 kbytes in   0.749145 sec =   136689 kbytes/sec
	inside:        102400 kbytes in   1.468844 sec =    69715 kbytes/sec