4.3DATA TRANSFER RATES
Data is transferred from the disk to the read buffer at a rate of up to 89 MB/s in bursts. Data is transferred from the read buffer to the SCSI bus at a rate of up to 6 MB/s in the asynchronous mode, or at up to 320 MB/s in the synchronous mode. For more detailed information on interface timing, refer to Chapter 6.
4.4TIMING SPECIFICATIONS
Table
Table
PARAMETER | MAXTOR ATLAS 10K V 73.5/147.1/300 GB | ||
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TYPICAL NOMINAL1 | MAXIMUM1 | ||
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Sequential Head Switch Time2 | 0.3 ms typical (read) | N/A | |
| 0.5 ms typical (write) |
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Sequential Cylinder Switch Time3 | 0.3 ms typical (read) | N/A | |
| 0.5 ms typical (write) |
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Random Average Seek (Read)4 | <4.0/ 4.2 / 4.4 ms | 4.8 ms | |
Random Average Seek (Write)4 | 4.5 / 4.7/ 4.9 ms | 5.3 ms | |
Average Rotational Latency | 3 ms | 3 ms | |
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1/3 Stroke Seek (Read)5 | <3 ms | 4.5 ms | |
11.0 ms | 12.0 ms | ||
SCSI “Hard Reset Time”7 | 20 ms | 20 ms | |
Power On to Drive Ready8 | 25 seconds | 30 seconds | |
Power On to Selection | 2.5 seconds | 3 seconds | |
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1.Typical specifications assume 25°C ambient temperature, nominal supply voltages, and no applied shock or vibration. Maximum specifications assume worst case extremes of operating temperature, humidity, and supply voltages.
2.Sequential Head Switch Time is the time from the conclusion of the last sector of a track to the beginning of the first logical sector on the next track of the same cylinder.
3.Sequential Cylinder Switch Time is the time from the conclusion of the last sector of a cylinder to the first logical sector on the next cylinder.
4.Random LBA.
5.1/3 Stroke Seek is defined as any seek of maximum length cylinder/3. 1/ 3 stroke seek may include one head switch.
6.Full Stroke Seek is defined as a seek from cylinder 0 to maximum cylinder or vice versa. Full stroke may include one head switch.
7.SCSI “Hard Reset Time” is the time from Reset to Selection.