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                                MODEL  XT-4230E
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              Interface:  ESDI                 RLL 1,7 Encoding

Capacity, Unformatted                Capacity, Formatted ESDI Compatible

Per Drive (Mbytes)    :  230.67      Per Drive (Mbytes)    :  203.04
Per Surface (Mbytes)  :  25.64       Per Surface (Mbytes)  :  22.56
Per Track (Bytes)     :  20,940      Per Track (Bytes)     :  18,432
                                     Per Sector (Bytes)    :  512

Parameters                           Performance Specifications

Cylinders     :  1224                Transfer rate, Mbits/sec    :  10.0
Data Heads    :  9                   Access Time (Average)       :  16msec  
Sector\Track  :  35/36               Access Time (Track-To-Track):  2.5msec
Pre-Comp         NONE                Access Time (Maximum)       :  29msec  
                                      
MTBF:  150,000 Hours (POH)            Dimensions(Inches): 3.25" x 5.75" x 8.20""

Power Requirements:  +12VDC +\- 5%. 1.5A Typical, 4.5A Maximum
                     + 5VDC +\- 5%. 1.7A Typical, 1.9A Maximum

NOTE:  The 2 most common ways to Low Level Format this drive are:  Method 1 is
       the debug utility.  Please follow the Controller Low Level Format
       instructions your Distributor has provided you.  Method 2 is Ontrack
       Corporation's Generic Disk Manager. Again,Please follow the instructions
       that Ontrack provides with this software package.