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DB35 Serial ATA Product Manual, Rev. E
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 the
ST3400832SCE, ST3300831SCE, ST3250823SCE and ST3200826SCE models.
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.
Table 1: Drive specifications
Drive specification ST3400832SCE ST3300831SCE ST3250823SCE ST3200826SCE
Formatted Gbytes (512 bytes/sector)* 400 300 250 200
Guaranteed sectors 781,422,768 586,072,368 488,397,168 390,721,968
Bytes per sector 512
Default sectors per track 63
Default read/write heads 16
Default cylinders 16,383
Recording density in BPI (bits/inch max) 763,000
Track density TPI (tracks/inch avg) 120,000
Areal density (Mbits/inch
2
avg) 91,560
Spindle speed (RPM) 7,200
Internal data transfer rate (Mbytes/sec max) 95
Sustained transfer rate OD (Mbytes/sec) 65
I/O data transfer rate (Mbytes/sec max) 150
ATA data-transfer modes supported PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
SATA data-transfer modes supported 1.5 Gbits/sec
Cache buffer 8 Mbytes
Height (max) 26.11 mm (1.028 inches)
Width (max) 101.85 mm (4.010 inches)
Length (max) 146.99 mm (5.787 inches)
Weight (max) grams / lb. 635 / 1.39
Average latency (msec) 4.16