Specifications

Barracuda 7200.7 Product Manual, Rev. N 3
2.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate
ST3200822A, ST3200021A, ST3160023A, ST3160021A, ST3120026A, ST3120022A, ST380013A,
ST380011A, and ST340014A model drives.
2.1 Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or defi-
nition, see the appropriate section of this manual.
Drive specification
ST3200822A
ST3200021A
ST3160023A
ST3160021A
ST3120026A
ST3120022A
ST380013A
ST380011A ST340014A
Formatted Gbytes (512 bytes/sector)* 200 160 120 80 40
Guaranteed sectors 390,721,968 312,581,808 234,441,648 156,301,488 78,165,360
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Physical read/write heads 4 4 3 2 1
Discs 2 2211
Recording density, BPI
(bits/inch max)
671,500 595,000 595,000 595,000 595,000
Track density, TPI
(tracks/inch max)
98,000 94,600 94,600 94,600 94,600
Areal density,
(Gbits/inch
2
max)
68.5 56.3 56.3 56.3 56.3
Spindle speed (RPM) 7,200
Internal data transfer rate OD, (Mbytes/
sec max)
85.4
Sustained data transfer rate OD (Mbytes/
sec)
58
I/O data-transfer rate
(Mbytes/sec max)
100
ATA data-transfer modes
supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Cache buffer
ST3200021A, ST3160021A,
ST3120022A, ST380011A, and
ST340014A
ST3200822A, ST3160023A,
ST3120026A, and ST380013A
2 Mbytes (2,048 kbytes)
8 Mbytes (8,192 kbytes)
Height (mm max) 26.035 mm (1.028 inches)