Seagate 5400.2 SATA Physical characteristics, Seek time, Start/stop times, Power specifications

2.6Physical characteristics

Drive specification
Height	(mm)	24.50	+/-0.2
	(inches)	0.965	+/-0.0078
Width	(mm)	85.70	+/-0.3
	(inches)	3.374	+/-0.0118
Length	(mm)	112.28 +/-0.3
	(inches)	4.420	+/-0.0118
Typical weight	(grams)	172
	(pounds)	0.379

2.7Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table 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.

Typical seek times (msec)	Read	Write
Track-to-track	1.0	1.5
Average	12.5	14.5
Full-stroke	22.0	24.0
Average latency	5.56	5.56

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 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 specifications.

2.8Start/stop times

Time to ready	Typical	Max @ 25°C
Power-on to Ready (sec)	3.5	8
Standby to Ready (sec)	3.0	8

2.9Power specifications

The drive receives DC power (+5V) through a native SATA power connector.

2.9.1Power consumption

Power requirements for the drives are listed in the table on page 6. Typical power measurements are based on an average of drives tested, under nominal conditions, at 25°C ambient temperature, after 25 minutes of oper- ation.

6 Momentus 5400.2 SATA Removable Drive Cartridge Product Manual, Rev. C