Seagate Barracuda 7200.7 ST3120025A, Руководство по эксплуатации продукта

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U Series 9 Product Manual, Rev. C 3
2.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient con-
ditions, at 25°C, and nominal power. For convenience, the phrases the drive
and this drive are used throughout this manual to indicate ST3160022A,
ST3120025A, and ST380012A model drives.
2.1 Specification summary table
The specifications listed in this table are for quick reference. For details on
specification measurement or definition, see the appropriate section of this
manual.
Drive specification ST3160022A ST3120025A ST380012A
Formatted Gbytes
(512 bytes/sector) 160 120 80
Guaranteed sectors 312,581,808 234,441,648 156,301,488
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Physical read/write heads 4 3 2
Discs 2 2 1
Recording density
BPI (bits/inch max) 595,000
Track density TPI
(tracks/inch max) 94,600
Areal density
(Mbits/inch
2
max)
56.3
Sustained data transfer rate OD (Mbytes/sec) 48
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 1 Mbytes
Height (mm max) 26.035 mm (1.028 inches)
Width (mm max) 101.6 mm (4.000 inches)
Length (mm max) 146.99 mm (5.787 inches)
Weight (typical) 635 grams (1.4 lb)