Seagate ST340014A Barracuda 7200.7 PATA Product Manual - Page 14

Physical organization, Recording and interface technology - ata

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2.4 Physical organization Model ST3200822A ST3200021A ST3160023A ST3160021A ST3120026A ST3120022A ST380013A ST380011A ST340014A Read/write heads 4 4 3 2 1 Number of discs 2 2 2 1 1 2.5 Recording and interface technology Interface Recording method Recording density BPI (bits/inch max) Track density TPI (tracks/inch max) Areal density (Gbits/inch2 max) Spindle speed (RPM) (± 0.2%) Internal data-transfer rate OD (Mbytes/sec max) Sustained data transfer rate OD (Mbytes/sec max) I/O data-transfer rate (Mbytes/sec max) Interleave Cache buffer ST3200021A, ST3160021A, ST3120022A, ST380011A, and ST340014A ST3200822A, ST3160023A, ST3120026A, and ST380013A ATA 16/17 EPRML 595,000 (671,500 for ST3200822A and ST3200021A models) 94,600 (98,000 for ST3200822A and ST3200021A models) 56.3 (68.5 for ST3200822A and ST3200021A models) 7,200 85.4 58 100 (Ultra DMA mode 5) 1:1 2 Mbytes (2,048 kbytes) 8 Mbytes (8,192 kbytes) 6 Barracuda 7200.7 Product Manual, Rev. N

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6
Barracuda 7200.7 Product Manual, Rev. N
2.4
Physical organization
2.5
Recording and interface technology
Model
Read/write heads
Number of discs
ST3200822A
ST3200021A
4
2
ST3160023A
ST3160021A
4
2
ST3120026A
ST3120022A
3
2
ST380013A
ST380011A
2
1
ST340014A
1
1
Interface
ATA
Recording method
16/17 EPRML
Recording density BPI (bits/inch max)
595,000 (671,500 for ST3200822A and
ST3200021A models)
Track density TPI (tracks/inch max)
94,600 (98,000 for ST3200822A and
ST3200021A models)
Areal density (Gbits/inch
2
max)
56.3 (68.5 for ST3200822A and
ST3200021A models)
Spindle speed (RPM) (
±
0.2%)
7,200
Internal data-transfer rate OD (Mbytes/sec max)
85.4
Sustained data transfer rate OD (Mbytes/sec max)
58
I/O data-transfer rate (Mbytes/sec max)
100 (Ultra DMA mode 5)
Interleave
1:1
Cache buffer
ST3200021A, ST3160021A, ST3120022A,
ST380011A, and ST340014A
2 Mbytes (2,048 kbytes)
ST3200822A, ST3160023A, ST3120026A, and ST380013A
8 Mbytes (8,192 kbytes)