DiamondMax 21 PATA Product Manual, Rev. A 13
2.4 Recording and interface technology
2.5 Physical characteristics
320GB 300GB 250GB 200GB
Interface ATA
Recording method Perpendicular
Recording density, KBPI (kbits/inch max) 781 813 781
Track density, KTPI (ktracks/inch avg) 145
Areal density (Gbits/inch
2
avg) 114.4
Spindle speed (RPM) (± 0.2%) 7,200
Internal data transfer rate (Mbits/sec max) 1,030
Sustained data transfer rate (Mbytes/sec max) 72
I/O data-transfer rate (Mbytes/sec max) 100 (Ultra DMA mode 5)
Drive specification
Maximum height
(mm)
(inches)
26.1
1.028
Maximum width
(mm)
(inches)
101.6
4.000 +/- 0.010
Maximum length
(mm)
(inches)
146.99
5.787
Typical weight
STM3320820A
STM3300620A
STM3250620A
STM3250820A
STM3200820A
635 grams (1.4 lbs)
635 grams (1.4 lbs)
600 grams (1.32 lbs)
600 grams (1.32 lbs)
600 grams (1.32 lbs)
Cache Size
STM3320820A
STM3300620A
STM3250620A
STM3250820A
STM3200820A
8 Mbytes
16 Mbytes
16 Mbytes
8 Mbytes
8 Mbytes