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Barracuda XT Series SATA Product Manual, Rev. C 3
2.0 Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For con-
venience, the phrases the drive and this drive are used throughout this manual to indicate the following drive models:
The specification summaries listed in the following tables are for quick reference. For details on specification measure-
ment or definition, see the appropriate section of this manual.
Table 1: Drive specifications summary for 2000GB models
ST32000641AS
Drive specification ST32000641AS
Formatted capacity (512 bytes/sector)* 2000GB
Guaranteed sectors 3,907,029,168
Heads 8
Disks 4
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density 1421 kb/in
Track density(avg) 240 ktracks/in
Areal density (avg) 347Gb/in
2
Spindle speed 7200 RPM
Internal data transfer rate (max) 1300Mb/s
Sustained data transfer rate OD(max) 138MB/s
I/O data-transfer rate (max) 600MB/s
ATA data-transfer modes supported PIO modes: 0 to 4
Multiword DMA modes: 0 to 2
Ultra DMA modes 0 to 6
Cache buffer 64MB
Height (max) 26.1mm / 1.028 in
Width (max) 101.85mm / 4.010 in
Length (max) 146.99mm / 5.787 in
Weight (typical) 700g / 1.543 lb
Average latency 4.16ms
Power-on to ready (typical) 15s
Standby to ready (typical) 15s
Startup current (typical) 12V (peak) 2.8A