HP C2488A Technical Reference Manual page 17

Table 1·2. HP C2486A/88A/90A Operating Specifications (continued)
Internal Data Transfer Rates (Controller/Disk)
Burst Rates (for single sector transfers):
Inner Zone to Outer Zone .................... 4.2 to 7.1 Mbytes (34 to 57 Mbits) per second
Sustained Rates: (for continuous transfers; excludes controller overhead)
Inner Zone to Outer Zone ................. 2.1 to 3.7 Mbytes (17.1 tq 29.5 Mbits) per second
External Data Transfer Rate (Host/Controller)
N arrow Single-Ended/Differential
Asynchronous ....................................................... 2.5 Mbytes per second
Synchronous ................................................. up to 10.0 Mbytes per second
Wide Differential
Asynchronous ....................................................... 5.0 Mbytes per second
Synchronous ................................................. up to 20.0 Mbytes per second
Recoverable Data Error Rate
Less than ten (10) errors in 10
13
bits transferred when the disk drive is operated within the
specified environmental limits.
Note: A recoverable data error occurs when a read or write operation sucessfully completes
with the execution of a recovery algorithm. The recovery action is reported to the host with a
Sense Key of 1. (Refer to the Request Sense command in Appendix A.) Mode pages
must
be in
the factory default states.
Unrecoverable Data Error Rate
Less than ten (10) errors in 10 15 bits transferred when the disk drive is operated within the
specified environmental limits.
Note: An un-recoverable data error occurs when a read or write operation does not sucessfully
complete with the execution of a recovery algorithm. The unsuccessful operation is reported to
the host with a Sense Key of 3. (Refer to the Request Sense command in Appendix A.) Mode
pages
must
be in the factory default states.
Seek Error Rate
Less than ten (10) seek errors in 10 7 seeks when the drive is operated within the specified
environmental limits.
Note: A seek error occurs when the drive does not successfully locate the desired cylinder and
head.
Recording Density
Bit Density: .......................... : ............... 2303 bits per mm (58,500 bits per inch)
Track Density: ...................................... 108 tracks per mm (2750 tracks per inch)
Coding System ............................................ 1,7 Run Length Limited (RLL) Code
DRAFT Product Specifications 1·7
1/18/93 09:58