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10 Cheetah 15K.5 SCSI Product Manual, Rev. J
5.0 Performance characteristics
5.1 Internal drive characteristics (transparent to user)
* One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
** Rounded off value.
5.2 SCSI performance characteristics (visible to user)
The values given in Section 5.2.1 apply to all models of the Cheetah 15K.5 SCSI family unless otherwise spec-
ified. Refer to the Parallel SCSI Interface Manual for additional timing details.
ST3300655LW
ST3300655LC
ST3146855LW
ST3146855LC
ST373455LW
ST373455LC
Drive capacity 300.0 146.8 73.4 GBytes (formatted)*
,
**
Read/write heads 8 4 2
Tracks/surface (total) 74,340 74,340 74,340 Tracks (user accessible)
Tracks/inch 125,000 125,000 125,000 TPI
Peak bits/inch 890k 890k 890k BPI
Areal Density 110 110 110 Gbits/inch
2
Internal data rate 960 to 1607 960 to 1607 960 to 1607 Mbits/sec (variable with zone)
Disc rotational speed 15k 15k 15k rpm
Average rotational latency 2.0 2.0 2.0 msec