Seagate ST930813AM manual Recording and interface technology, Physical characteristics, Seek time

2.5Recording and interface technology

Technology	Specification
Interface	Parallel ATA
Recording density BPI	540.1k bits/inch typical
Track density TPI	119k tracks/inch typical
Areal density	64.3 Gbits/inch2 max
Spindle speed	5,400 RPM (± 0.2%)
Internal data-transfer rate	321.1 Mbits/sec max
I/O data transfer rate	100 Mbytes/sec max
Interleave	1:1
Cache buffer	8 Mbytes (8,192 kbytes)

2.6Physical characteristics

Height	(mm)	9.5 +/–0.2
	(inches)	0.374	+/–0.008
Width	(mm)	69.85	+/–0.25
	(inches)	2.750	+/–0.010
Length	(mm)	100.2	+/–0.25
	(inches)	3.945	+/–0.010
Typical weight	(grams)	100
	(pounds)	0.22

2.7Seek time

Seek measurements are taken with nominal power. All times are measured using drive diagnostics. The spec- ifications below are defined as follows:

•Track-to-track seek time is an average of all possible single-track seeks in both directions.

•Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.

Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet or exceed the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these speci- fications.

EE25 Series Product Manual, Rev. E 9