Seagate Medalist ST31082A, Руководство по эксплуатации продукта

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Specifications Chapter 2
Technical Reference Manual Page 7
Performance Characteristics
Seek Times (typical)* :
•
Track to track: 3.0 ms
• Average: 12.5 ms
• Maximum: 24 ms
•
The timing is measured through the interface with the drive operating at nominal DC input voltage
and nominal operating temperature. The timing also assumes that:
•
BIOS and PC system hardware dependency have been subtracted from timing measurements
•
the drive is operated using its native drive parameters
•
the controller overhead is the time it takes to HOST IRQ after the host writes the
command register with a READ instruction, for the case where the data already resides in the
buffer
* The average seek time is determined by averaging the seek time for a minimum of 1000 seeks of
random length over the surface of the disk.
Average Latency:
•
6.67ms
Rotation Speed:
•
4500 RPM (+ 0.25%)
Controller Overhead:
•
<1.0ms
Start Time at Power-Up: *
•
0 RPM to 4500 RPM
-
Typical: 6 seconds
- Maximum: 10 seconds
• 0 RPM to Ready
-
Typical: 10 seconds
- Maximum: 20 seconds
* These numbers assume spin recovery is not invoked. If spin recovery is invoked, the maximum
could be 40 seconds. Briefly removing power can lead to spin recovery being invoked.
Stop Time at Power-Down:
•
Typical: 10 seconds
• Maximum: 20 seconds
Interleave:
•
1:1