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4-4 Maxtor Atlas 10K V
4.3 DATA 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.
4.4 TIMING SPECIFICATIONS
Table 4-3 illustrates the timing specifications of the Maxtor Atlas 10K V hard disk
drive.
Table 4-3 Timing Specifications for Maxtor Atlas 10K V
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.
PARAMETER
MAXTOR ATLAS 10K V 73.5/147.1/300 GB
TYPICAL NOMINAL
1
MAXIMUM
1
Sequential Head Switch Time
2
0.3 ms typical (read)
0.5 ms typical (write)
N/A
Sequential Cylinder Switch Time
3
0.3 ms typical (read)
0.5 ms typical (write)
N/A
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
1/3 Stroke Seek (Read)
5
<3 ms 4.5 ms
Full-Stroke Seek
6
11.0 ms 12.0 ms
SCSI “Hard Reset Time”
7
20 ms 20 ms
Power On to Drive Ready
8
25 seconds 30 seconds
Power On to Selection 2.5 seconds 3 seconds