Seagate ST310014ACE, Руководство по эксплуатации продукта

Страница: 13 / 40

ST310014ACE Product Manual, Rev. B 5
1.4 Physical characteristics
1.5 Start/stop times
1.6 Seek times
Seek measurements are taken with nominal power at 25°C ambient
temperature. All times are measured using drive diagnostics. Seek time
specifications 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.
•
Full-stroke seek time is one-half the time needed to seek from the first
data cylinder to the maximum data cylinder and back to the first data
cylinder. The full-stroke typical value is determined by averaging 100
full-stroke seeks in both directions.
I/O data-transfer rate
(Mbytes/sec max) 16.6 (PIO mode 4)
100 (Ultra DMA mode 5)
Interleave 1:1
Cache buffer (Mbytes) 2
Drive Specification ST310014ACE
Maximum height mm (inches) 19.99 (0.787)
Maximum width
mm (inches) 101.9 (4.01)
Maximum length mm (inches) 147.0 (5.78)
Typical weight grams (pounds) 455 (1.0)
Power-on to Ready (sec) 6.5 (typical)
Standby to Ready (sec) 6.5 (typical)
Ready to spindle stop (sec) 10 (typical)
Average seek time (msec typical) 12.7
Track-to-track seek time (msec typical) 1.2 (read) 2.0 (write)
Read/write seek time (msec typical) 18.0 (read) 24.9 (write)
Full-stroke seek time (msec typical) 36.8 (read); 42.0(write)
Power-on to ready (sec max) 7 sec