2.1.2Function specifications
Table 2.1 shows the function specifications of the IDD.
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| Table 2.1 | Function specifications |
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| Item |
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| Specification |
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| MAA3182xx |
| MAB3091xx |
| MAB3045xx |
| MAC3091xx |
| MAC3045xx |
Formatted capacity/device (*1) | 18.2 GB |
| 9.1 GB |
| 4.55 GB |
| 9.1 GB |
| 4.55 GB | ||||
Unformatted capacity/device | 23.9 GB |
| 11.9 GB |
| 5.95 GB |
| 11.8 GB |
| 5.90 GB | ||||
Number of disks |
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| 10 |
| 5 |
| 3 |
| 5 |
| 3 | |
Number of heads |
| 19 |
| 10 |
| 5 |
| 10 |
| 5 | |||
Number of cylinders (*2) | 9,041 |
| 8,491 |
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| 8,691 | ||||||
Unformatted capacity/track | 81,920 to |
| 85,504 to 126,976 |
| 79,872 to 126,976 | ||||||||
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| 126,976 |
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Number of rotations (rpm) |
| 7,200±0.5% |
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| 10,033±0.5% | |||||||
Average latency time |
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| 4.17 ms |
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| 2.99 ms | ||||||
Seek time (*3) |
| Minimum | 0.9 ms (Read)/ |
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| 0.8 ms (Read)/ |
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(Read/Write) |
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| 1.1 ms (Write) |
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| 1.0 ms (Write) |
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| Average |
| 8.0 ms (Read)/ |
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| 7.5 ms (Read)/ |
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| 9.0 ms (Write) |
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| 8.5 ms (Write) |
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| Maximum | 17.0 ms (Read)/ |
| 16.0 ms (Read)/ |
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| 18.0 ms (Write) |
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| 17.0 ms (Write) |
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Start/stop time |
| Start time |
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| 30 s typ. (60 s max.) |
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(*4) |
| Stop time |
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| 30 s typ. |
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Recording mode |
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| PR4ML |
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Recording density |
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| 121,000 to 159,000 bpi |
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| 116,093 to 159,084 bpi | |||||||
Track density |
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| 9,620 TPI |
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| 9,200 TPI | ||||
External dimensions |
| Height | 41.3 mm |
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| 25.4 mm |
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| Width | 101.6 mm |
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| 101.6 mm |
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| Depth | 146.0 mm |
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| 146.0 mm |
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Weight |
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| 1.0 kg |
| 0.65 kg |
| 0.70 kg | |||||
Power |
| 13 W |
| 9 W |
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| 14 W | |||||
consumption (*5) |
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Interface |
| Fast SCSI |
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| Cable length: 6 m max |
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| Fast 20 SCSI |
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| Cable length: 3 m max (*6) |
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| Cable length: 1.5 m max (*7) |
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Data transfer |
| Disk drive | 12.3 to |
| 13.2 to 19.5 MB/s |
| 17.2 to 27.2 MB/s | ||||||
rate (*8) |
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| 19.5 MB/s |
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| SCSI |
| Asynchronous |
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| 12 MB/s max. |
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| Synchronous |
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| 40 MB/s max. |
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Logical data block length (*1) |
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| 512 to 528 byte (Fixed length) |
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SCSI command specification | ANSI |
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Data buffer |
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| 512 KB FIFO ring buffer, |
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| count 1 to 16, |
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2 - 2 |
