Drive Specifications | www.seagate.com |
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 following drive models:
ST33000651ASST32000641AS
The specification summaries listed in the following tables are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.
Table 1 Drive specifications summary for 3000GB and 2000GB models
Drive specification | ST33000651AS | ST32000641AS |
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Formatted capacity (512 bytes/sector)* | 3000GB (3TB) | 2000GB (2TB) |
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Guaranteed sectors | 5,860,533,168 | 3,907,029,168 |
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Heads | 10 | 8 |
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Disks | 5 | 4 |
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Bytes per sector | 512 | 512 |
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Default sectors per track | 63 | 63 |
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Default read/write heads | 16 | 16 |
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Default cylinders | 16,383 | 16,383 |
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Recording density | 1941 kb/in | 1721 kb/in |
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Track density(avg) | 270 ktracks/in | 240 ktracks/in |
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Areal density (avg) | 488Gb/in2 | 347Gb/in2 |
Spindle speed | 7200 RPM | 7200 RPM |
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Internal data transfer rate (max) | 1900Mb/s | 1300Mb/s |
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Sustained data transfer rate OD(max) | 149MB/s | 138MB/s |
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I/O | 600MB/s | 600MB/s |
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ATA | PIO modes: 0 to 4 | PIO modes: 0 to 4 |
| Multiword DMA modes: 0 to 2 | Multiword DMA modes: 0 to 2 |
| Ultra DMA modes 0 to 6 | Ultra DMA modes 0 to 6 |
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Cache buffer | 64MB | 64MB |
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Height (max) | 26.1mm / 1.028 in | 26.1mm / 1.028 in |
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Width (max) | 101.85mm / 4.010 in | 101.85mm / 4.010 in |
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Length (max) | 146.99mm / 5.787 in | 146.99mm / 5.787 in |
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Weight (typical) | 700g / 1.543 lb | 700g / 1.543 lb |
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Average latency | 4.16ms | 4.16ms |
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18s | 15s | |
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Standby to ready (typical) | 18s | 15s |
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Startup current (typical) 12V (peak) | 2.0A | 2.8A |
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Voltage tolerance (including noise) | 5V + 5% | 5V + 5% |
| 12V + 10% | 12V + 10% |
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Operating temperature | 0° to 60°C | 0° to 60°C |
(Drive Case temperature) |
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Nonoperating temperature (Ambient) | ||
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Temperature gradient (max) | 20°C per hour max (operating) | 20°C per hour max (operating) |
| 30°C per hour max (nonoperating) | 30°C per hour max (nonoperating) |
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Relative humidity | 5% to 95% (operating) | 5% to 95% (operating) |
| 5% to 95% (nonoperating) | 5% to 95% (nonoperating) |
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Relative humidity gradient (max) | 30% per hour | 30% per hour |
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Wet bulb temperature (max) | 37.7°C max (operating) | 37.7°C max (operating) |
| 40.0°C max (nonoperating) | 40.0°C max (nonoperating) |
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10 | Barracuda XT SATA Product Manual, Rev. D |
