5.0Performance characteristics
5.1Internal drive characteristics (transparent to user)
| ST3300655LW | ST3146855LW | ST373455LW |
|
| ST3300655LC | ST3146855LC | 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/inch2 |
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 |
*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.
5.2SCSI 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.
10 | Cheetah 15K.5 SCSI Product Manual, Rev. J |
