8 Product Manual - Hawk 1LP Family SCSI-2 (Volume 1), Rev. A
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5.0
Performance characteristics
5.1
Internal drive characteristics (transparent to user)
ST31200N/ND/NC ST3620N/NC
Drive Capacity
1258.8
651.8
MByte (UNF)
Read/Write Heads
9
5
(Max)
Bytes/Track
51803.0
48283
Bytes (Avg)
Bytes/Surface
139.8
130.4
Mbytes (UNF)
Tracks/Surface, Total
2700
2700
Tracks (user accessible)
Tracks/Inch
3000
3000
TPI
Servo Heads
1
1
Internal Data Rate
47.2 - 26.8
42.4 - 24.4
Mbits/sec (variable with zone)
Disc Rotational Speed
5411+ 0.5%
5411+ 0.5%
r/min
Average Rotational Latency
5.54
5.54
ms
5.2
SCSI Seek, Read and Write performance characteristics (visible to user) [8]
Refer to Section 11.7 and to the SCSI-2 Interface Product Manual 77738479 for additional timing details.
5.2.1
Seek time
Drive Level
Drive Level
ST31200N/ND/NC
ST3620N/NC
Read
Write
Read
Write
ms
ms
Average
-
Typical*[3]
9.3
10.5
9.3
10.5
Max.
[2]
11.0
12.5
11.0
12.5
Single Track
-
Typical [3]
1.2
1.7
1.2
1.7
Max.
[2]
3.0
3.5
3.0
3.5
Full Stroke
-
Typical [3]
19.4
20.4
19.4
20.4
Max.
[2]
22.9
23.9
22.9
23.9
Including Controller Overhead
(without disconnect)
[1] [4]
Drive Level
Drive Level
ST31200N/ND/NC
ST3620N/NC
Read
Write
Read
Write
ms
ms
Average
-
Typical [3]
10.2
11.4
10.2
11.4
Max.
[2]
11.9
13.4
11.9
13.4
Single Track
-
Typical [3]
2.1
2.5
2.1
2.5
Max.
[2]
3.8
4.3
3.8
4.3
Full Stroke
-
Typical [3]
20.4
21.4
20.4
21.4
Max.
[2]
23.9
24.9
23.9
24.9
