Seagate ST9120821AS Momentus 5400.2 SATA Product Manual - Page 9
Drive specifications - ata
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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 ST9120821AS, ST9100824AS, ST98823AS, ST96812AS, ST94813AS and ST93811AS models. 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. Table 1: Drive specifications Drive specification ST9120821AS ST9100824AS ST98823AS Formatted Gbytes (512 bytes/sector) Guaranteed sectors Bytes per sector Default sectors per track Default read/write heads Default cylinders Physical read/write heads Discs Recording density in BPI (bits/inch max) Track density TPI (tracks/inch max) Areal density (Mbits/inch2 max) Spindle speed (RPM) Internal transfer rate (Mbytes/sec max) I/O data transfer rate (Mbytes/sec max) ATA data-transfer modes supported Cache buffer Height (max) Width (max) Length (max) Weight (typical) Average latency (msec) Power-on to ready (typical) Standby to ready (typical) 120 234,441,648 512 63 16 16,383 4 2 778k 100 195,371,568 4 2 80 156,301,488 3 2 126k 98.2 5,400 42 150 SATA 1.0, SATA II PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 8 Mbytes 9.5 +/- 0.2 mm (0.374 +/- .0078 inches) 69.85 mm (2.75 +/- 0.0098 inches) 100.5 +/- 1.6 mm (3.96 +/- 0.063 inches) 100 grams (0.22 lb) 5.56 3.5 sec 3.0 sec ST96812AS 60 117,210,240 2 1 ST94813AS 40 78,140,160 2 1 ST93811AS 30 58,605,120 1 1 Momentus 5400.2 SATA Product Manual, Rev. C 3