Maxtor STM380215AS, STM3160815AS, STM3160215AS Seek time, Start/stop times, Power specifications

2.6Seek 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.

	500-320 GB						160 - 80 GB
	STM3250820AS*		STM3250824AS		STM3250310AS**		STM340215AS**
Typical seek times (msec)	Read	Write	Read	Write	Read	Write	Read	Write
Track-to-track	<0.8	<1.0	<0.8	<1.0	<1.0	<1.2	<1.0	<1.2
Average	<8.5	<10.0	<8.0	<9.0	<11.0	<12.0	<11.0	<12.0
Average latency:	4.16

*Measured in performance mode. **Measured in quiet mode.

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.

2.7Start/stop times

			STM3250820AS
	500-320 GB	STM3250824AS	STM3250310AS	160 - 40 GB
Power-on to Ready (sec)	15 (max)	11 (max)	11 (max)	7.9 (max)
Standby to Ready (sec)	15 (max)	11 (max)	15 (max)	7.9 (max)
Ready to spindle stop (sec)	10 (max)	12 (max)	10 (max)	10 (max)

2.8Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 4 on page 30.

DiamondMax 21 Serial ATA Product Manual, Rev. C 19