6
Barracuda ATA III Family Product Manual, Rev. B
1.2 Physical organization
1.3 Recording and interface technology
Drive Model
Read/Write heads
(GMR)
Number of discs
ST340824A
4
2
ST330620A
3
2
ST320414A
2
1
ST315310A
2
1
ST310215A
1
1
Interface
ATA
Recording method
16/17 EPRML
Recording density BPI (bits/inch)
470,000
Track density TPI (tracks/inch)
31,700
Areal density (Mbits/inch
2
max)
14,900
Spindle speed (RPM) (
±
0.2%)
7,200
Internal data-transfer rate
(Mbits/sec max)
500
I/O data-transfer rate
(Mbytes/sec max)
16.6 (PIO mode 4)
100 (Ultra DMA mode 5)
Interleave
1:1
Cache buffer
2 Mbytes
