boon@geac.UUCP (10/20/87)
I have a hard disk controller which will accept the following hard disk according to an appendix page I got. ------------------------------------------------------------------------- | Manufacturer | # cylinders | # heads | capacity | dip switch | Avg Acc | |---------------|-------------|---------|----------|------------|---------| | Seagate ST212 | 306 | 4 | 10 Meg | 1,7,8 | 85 ms | | Seagate ST213 | 612 | 2 | 10 Meg | 1,3,7 | 85 ms | | Seagate ST412 | 306 | 4 | 10 Meg | 1,7,8 | 65 ms | | Seagate ST425 | 306 | 8 | 20 Meg | 1,3,8 | 65 ms | | ** 1323 | 1024 | 4 | 30 Meg | * 1,7,8 | 28 ms | | ** 1324 | 1024 | 6 | 50 Meg | * 1,7,8 | 28 ms | | ** 1325 | 1024 | 8 | 70 Meg | * 1,7,8 | 28 ms | | | | | | | | ------------------------------------------------------------------------- * Vfeature ( trademark of Golden Bow Systems ) required. ** No manufacturer given There are 2 chip with plastic suckers, one with the marker BXD5 1983 DTC, the other has KIM11. I was using the controller with the CDC WREN 40 Meg drive. After a low level format I got 60 Meg. How come ?? and Why ??. The low level format was done with the utilities given with the CDC drive with switch settings 1,3,7. After using the hard drive for about 18 months, it suffered a head crash I think ( grinding sound on boot ). My questions are :- 1) What kind of hard drive can I used besides those specified, especially those with higher access times and different cylinder and head settings ? 2) How can I get a complete manuel for this controller ? 3) What are the meanings of the dip switch settings ? How about switches 2,4,5,6 - what are they used for ? 4) Can I used Vfeature or Speedstor* in conjunction with any hard disk ? 5) Do Speedstor and Vfeature serve the same purpose ? And if so which is better ? All reply via email please. Thanks to all involved. * Speedsor - trademark of Storage Dimensions