Maxtor 10K III Timing Specifications for Maxtor Atlas 10K, Typical, Temperature, nominal supply

Specifications

￿￿￿￿￿$￿￿$Data"￿￿#￿￿"￿"￿is transferred $from￿#the disk to the read buffer at a rate of up to 55 MB/s in bursts. Data is transferred from the read buffer to the SCSI bus at a rate of up to 6 MB/s in the asynchronous mode, or at up to 160 or 320 MB/s in the synchronous mode. For more detailed information on interface timing, refer to Chapter 6.

￿￿￿6+/+0)Table￿52'%+(+%#6+1054-3illustrates the timing specifications of the Maxtor Atlas 10K III hard disk drive.

Timing Specifications for Maxtor Atlas 10K III

Sequential2#4#/'6'4Head Switch Time2			≤6;2+%#.27/#:614ms.typical￿01/+0￿#6(read).#.51￿￿￿-￿		+++￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿/#:+/7/N/A )$
			≤
Sequential Cylinder Switch Time3			≤ .	(read)		N/A
			≤
Random Average Seek (Read)			<4.5 ms			5.1 ms
Random Average Seek (Write)4			5	ms		5.5 ms
Average Rotational Latency			3 ms			3 ms
1/3 Stroke Seek (Read)5			<4 ms			4.5 ms
Full-Stroke Seek6			≤ 11.	ms		13.0 ms
SCSI “Hard Reset Time”7			20 ms			20 ms
Power On to Drive Ready8			22 seconds			25 seconds
Power On to Selection			.5 seconds			3 seconds
Table4-3
1. Typical		specifications a sume 25° C ambient			temperature, nominal supply
	voltages, and no applied sho k or v bration. Maximum specifications
	assume worst case extremes of ope ating temperature, humidity, and
	supply voltages.
2.	Sequential Head Switch Time is the time from the conclusion of the last
	sector of a track to.73the beginning of the first logical sector on the next
	track of the same cylinder.
3.	Sequential Cylinder.8mstypicalSwitch Time(write)is the time from the conclusion of the
	last sector of a cylinder to the first logical sector on the next cylinder.
4.	Random LBA.
5.	1/3 Stroke Seek is defined as any seek of maximum length cylinder/3. 1/
	3 stroke seek may include one head switch.
6.	Full Stroke Seek is defined as a seek from cylinder 0 to maximum cylinder
	or vice versa. Full stroke may include one head switch.
7.	SCSI “Hard Reset Time” is the time from Reset to Selection.
8.	At power on, startup error algorithms are used and may extend the
	time to Drive Ready to as long as 30 seconds.

4-4 Maxtor Atlas 10K III