Maxtor D540X-4K manual Mand Spindown Time, Power loss, Nominal conditions are as follows

Specifications

￿￿￿6+/+0)Table￿452'%+(+%#6+105-3illustrates the timing specifications of the Maxtor D540X-4K hard disk drives.

							Timing Specifications
Sequential2#4#/'6'4Cylinder Switch Time							01/6;2ms+%#0.1	91456%#5'3 ms2
Sequential Head Switch Time							ms	3 ms
				4			12 ms	15 ms
Random Average (Read or Seek)
Random Average (Write)						9	15 ms	18 ms
Full-Stroke Seek							24 ms	28 ms
Average Rotational Latency							5.56 ms	—
Power On			to Drive Ready				7.5 seconds	12 seconds
Standby to Interface Ready							seconds	12 seconds
Spindown Time, Standby Com-							seconds	15 seconds
mand
Spindown Time, Power loss							12 seconds	30 seconds8
			1. Nominal conditions are as follows:
			•Nominal temperature6CDNG￿￿￿￿￿￿￿77°F (25°C)
			•Nominal supply voltages (12.0V, 5.0V)
			•No applied shock or vibration
			2. Worst case conditions3				are as follows:
			•Worst case temperature extremes 41°F to 131°F (5°C to 55°C)
		5	•Worst case9	supply voltages (12.0V ±10%, 5.0 V ±5%)
			3. Sequential Cylinder Switch Time is the time from the conclusion of the last sector
			of a cylinder to the first logical sector on the next cylinder (no more than 6% of
	7		cylinder switches6		exceed this time).
			4. Sequential Head Switch Time is the time from the last sector of a track to the

beginning of the first logical sector of the next track of the same cylinder (no more than 6% of head switches exceed this time).

5. Power On is the time from when the supply voltages reach operating range to when the drive is ready to accept any command.

6. Drive Ready is the condition in which the disks are rotating at the rated speed,

and the drive is able to accept and execute commands requiring disk access without further delay at power or start up. Error recovery routines may extend the time to as long as 45 seconds for drive ready.

Maxtor D540X-4K 20.4/40.0/60.0/80.0 GB AT 4-5