Performance Characteristics; Internal Drive Characteristics (Transparent To User); Scsi Performance Characteristics (Visible To User); Access Time - Seagate ST34501N Product Manual

Cheetah 4LP Product Manual, Rev. B
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
Bits/inch (minimum)
Bits/inch (maximum)
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 4LP family unless otherwise specified.
Refer to Section 9.10 and to the SCSI Interface Product Manual, P/N 77738479 for additional timing details.
4.2.1

Access time [6]

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)—variable with zone/cylinder:
Minimum [3] 122
Maximum [3] 177
Data buffer transfer rate to/from disc media (< 1 track):
Minimum [3] TBD
Average [3] TBD
Maximum [3] TBD
*[ ] All notes for Section 4.2 are listed at end of Section 4.2.3.
5,591 Gbyte (unformatted) (rounded-off values)
8
115,078 Bytes (average) (rounded-off values)
751.0 Mbytes (unformatted) (rounded-off values)
6,526 Tracks (user accessible)
6,932 TPI
94,001 BPI
135,401 BPI
122-177 Mbits/sec (variable with zone)
10,033 ±0.5% r/min
2.99 msec
Including controller overhead
(without disconnect) [2] [3]
Read Write
msec
7.7 8.7
0.98 1.24
18.2 19.2
ST34501
< 1 hours
< 0.6 hour
1 to 1
Mbits/sec
Mbits/sec
Mbytes/sec divided by (interleave factor)
Mbytes/sec divided by (interleave factor)
Mbytes/sec divided by (interleave factor)
9