Seagate ST730212DE-30GB manual Recording and interface technology, Physical characteristics

2.4Recording and interface technology

Technology	Specification
Interface	IDE (Parallel ATA)
Recording method	Perpendicular Magnetic Recording
Recording density BPI (bits/inch average)	1,025,000
Track density TPI (tracks/inch average)	165,000
Areal density (Gbits/inch2 average)	169
Spindle speed (RPM) (± 0.2%)	3,600
Internal data-transfer rate OD (Mbits/sec max)	350
Sustained data transfer rate OD (Mbytes/sec max)	24.5
I/O data-transfer rate (Mbytes/sec max)	66.7 (UDMA 4)
Cache buffer (Mbytes)	2

2.5Physical characteristics

Height	(mm)	5.0 + 0.15
	(inches)	0.1968 + 0.006
Width	(mm)	54.0	+/-0.3
	(inches)	2.1260 +/-0.0118
Length	(mm)	71.0	+/-0.3
	(inches)	2.7953 +/-0.0118
Typical weight	(grams)	48.0	(typ)
	(pounds)	0.1058 lb. (typ))
Interface Connector		40-way ZIF

2.6Time to ready

Time to ready	Typical
Power-On to Ready (sec)	1.8
Standby to Ready (sec)	1.8

Lyrion Series IDE Product Manual, Rev. F 5