Table of Contents
Advertisement
8
_________________________________________________________________________________________
5.0
Performance characteristics
5.1
Internal drive characteristics (transparent to user)
Drive Capacity
Read/Write Heads
Bytes/Track
Bytes/Surface
Tracks/Surface, Total
Tracks/Inch
Servo Heads
Internal Data Rate
Disc Rotational Speed
Average Rotational Latency
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
Average
-
Typical [3]*
Max.
Single Track
-
Typical [3]
Max.
Full Stroke
-
Typical [3]
Max.
Average
-
Typical [3]
Max.
Single Track
-
Typical [3]
Max.
Full Stroke
-
Typical [3]
Max.
Product Manual - Hawk 2 Family SCSI-2 (Volume 1), Rev. C
ST12400N/ND/NC ST11900N/ND/NC
2537
19
50,945
131.3
2621
3000
1
26.8 to 45.6
5411 +0.5%
5.54
ST12400N/ND/NC
Read
ms
9.3
[2]
11.1
1.0
[2]
1.5
21.0
[2]
23.0
Including Controller Overhead
(without disconnect)
ST12400N/ND/NC
Read
ms
10.3
[2]
12.1
2.0
[2]
2.5
22.0
[2]
24.0
2003
MByte (UNF)
15
Data (Max)
50,945
Bytes (Avg)
131.3
Mbytes (UNF)
2621
Tracks (user
accessible)
3000
TPI
1
26.8 to 45.6
Mbits/sec
(variable with
zone)
5411 +0.5%
r/min
5.54
ms
Drive Level
ST11900N/ND/NC
Write
Read
10.8
9.3
12.6
11.1
1.7
1.0
2.0
1.5
22.5
21.0
24.0
23.0
[1] [4]
ST11900N/ND/NC
Write
Read
11.8
10.3
13.6
12.1
2.7
2.0
4.0
2.5
23.5
22.0
25.0
24.0
Write
ms
10.8
12.6
1.7
2.0
22.5
24.0
Write
ms
11.8
13.6
2.7
4.0
23.5
25.0
Advertisement
Table of Contents
