Hawk 2XL Family Installation Guide, Rev. C | 15 |
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Drive model "WC" plugs directly into a bulkhead or PCB mounted connector. Systems using these drives have made provisions for terminators and selecting most options, so only "Write Protect" and "Parity Disable" options (on J2) must be considered for possible setting by a person installing a replace- ment drive (usually no change is needed). Most systems using "WC" model drives use drives that have unique drive internal control firmware, so "off the distributor shelf" drives probably will not work in these installations. Firmware cannot be changed on these drives. If you are upgrading by installing an additional drive, consult the system documentation or system purchase source for help in setting up drive ID, options and getting termi- nation correct.
I/O line terminators
The SCSI I/O lines must be "terminated" at the drive connected to the end of the cable. If your new drive is a model "N" or "W" and is to be connected at the end of the cable, a jumper plug should be installed on J2 (one of the smaller plugs) at the loca- tion shown in Figure 3d where it says "Terminator Enable."
On J2, the "Terminator Power" (TP) jumper should be left in the "Term. Power From Drive" position, unless otherwise directed by your computer documentation.