Hawk 4XL Product Manual, Rev. A
9
4.0
Performance characteristics
4.1
Internal drive characteristics (transparent to user)
4.2
SCSI Seek performance characteristics (visible to user) [6]*
The values given in Section 4.2.1 apply to all models of the Hawk 4XL family unless otherwise specified. Refer
to Section 9.10 and to the
SCSI Interface Product Manual
(part number 77738479) for additional timing details.
4.2.1
Access time [8]
*[ ] All notes for Section 4.2 are listed at end of Section 4.2.3.
ST34555
Drive Capacity
6.5/4.55
GByte (unformatted/formatted)
Read/Write Heads
8
Bytes/Track
124,000
Bytes (average, unformatted)
Bytes/Surface
812.5
Mbytes (unformatted)
Tracks/Surface, Total
6,311
Tracks (user accessible)
Tracks/Inch
6,800
TPI
Peak Bits/Inch
139,209
BPI
Internal Data Rate
72-115
Mbits/sec (variable with zone)
Disc Rotational Speed
7,200
r/min
Average Rotational Latency
4.17
ms
Including Controller Overhead
(without disconnect) [1] [4]
Drive Level
Read
Write
ms
Average
–
Typical
[3]
9.1
10.1
Maximum [2]
10.8
11.9
Single Track
–
Typical
[3]
1.3
1.4
Maximum [2]
1.8
1.9
Full Stroke
–
Typical
[3]
17.5
19.5
Maximum [2]
19.7
20.2
