Performance Characteristics; Internal Drive Characteristics (Transparent To User); Scsi Performance Characteristics (Visible To User); Access Time - Seagate ST373405LW - Cheetah 73.4 GB Hard Drive Product Manual

Cheetah 73LP Product Manual, Rev. C
4.0

Performance characteristics

4.1

Internal drive characteristics (transparent to user)

Drive capacity
Read/write heads
Bytes/track
Bytes/surface
Tracks/surface (total)
Tracks/inch
Peak bits/inch
Internal data rate
Disc rotational speed
Average rotational latency
4.2

SCSI performance characteristics (visible to user)

The values given in Section 4.2.1 apply to all models of the Cheetah 73LP family unless otherwise specified.
Refer to Section 9.10 and to the SCSI Interface Product Manual, part number 75789509, for additional timing
details.
4.2.1

Access time [5]

ST373405
Average—Typical [2]
Single Track—Typical [2]
Full Stroke—Typical [2]
ST336605
Average—Typical [2]
Single Track—Typical [2]
Full Stroke—Typical [2]
4.2.2

Format command execution time (minutes) [1]

Maximum (with verify)
Maximum (no verify)
4.2.3

Generalized performance characteristics

Minimum sector interleave
Data buffer transfer rate to/from disc media (one 512-byte sector):
Minimum [3]*
Average [3]
Maximum [3]
ST373405 ST336605
73.4 36.7
8 4
397,385 397,385
12,100 12,100
29,549 29,549
38,000 38,000
474 474
399-671 399-671
10,041 10,041
2.99 2.99
Including controller overhead
(without disconnect) [1] [3]
Drive level
Read Write
msec
5.3 5.7
0.6 0.8
9.6 10.0
4.9 5.4
0.6 0.8
8.8 9.3
ST373405 ST336605
120 90
60 45
1 to 1
38.4 MByte/sec
52.0 MByte/sec
63.9 MByte/sec
GByte (formatted, rounded off values)
Bytes (average, rounded off values)
Mbytes (unformatted, rounded off values)
Tracks (user accessible)
TPI
KBPI
Mbits/sec (variable with zone)
r/min (+0.5%)
msec
Not including controller overhead
(without disconnect) [1] [3]
Drive level
Read
msec
5.1
0.4
9.4
4.7
0.4
8.6
Write
5.5
0.6
9.8
5.2
0.6
9.1
9