Phoenix International VF2-350-SCW-RHD, Technical Information

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Drive Software Configuration
Initially you will need to run a device setup program in order to configure the software and hardware to properly recognize
the drives on the VF2-350-SCW-RHD. You should consult the host/processor manual and/or operating system manuals
for a description of the utility required to properly format and use your mass storage subsystem.
Hard Drive Software Configuration
The hard disk drive can be installed as SCSI unit 0-15. The disk drive characteristics are described in detail in Chapter 4.
It operates using the Fast/Wide SCSI-2 interface and has to be configured by the host operating system software for
proper operation.
Terminator Power
Terminator power for the drives can be jumpered to route the Terminator Power from different sources. A jumper installed
at TERMPWR C to BRD supplies power from the on board circuitry. Jumper TERMPWR C to HOST allows the SCSI bus
Host to supply the Terminator Power to the unit and the P2 connector if they are so configured.(See Figure 1-2)
Termination
The active termination required for the SCSI-2 bus is on the VF2 module. The SensiTerm TM circuitry will automatically
configure the termination for the SCSI bus. It determines if the SCSI bus signals are received from the P2 connector or
from the 68 pin Micro-D connector on the front panel and sets the termination at the correct end of the SCSI bus. If the
module is in the middle of a SCSI bus route, the SensiTerm
TM circuitry automatically disables all on board termination.
Operation
The VF2-350-SCW-RHD module has a removable disk drive carrier/drive module installed from the factory. The front
panel keylock performs several functions. When the keylock is moved to the "Locked" (full counterclockwise)position, it
physically locks the hard disk carrier into the module. It also applies power to the disk drive using a "Soft Power" circuit.
This circuit applies voltage to the disk drive to activate its circuitry and then ramps the current to the drive to prevent a
high in rush current condition. While the disk drive is spinning to operating speed, the ID LED indicator flashes the
selected ID number. When the drive has reached operating speed and is ready to be accessed, the ID LED indicator
stops flashing. When the keylock is moved to the "Unlock" position, the ID LED flashes to notify the operator that the disk
is going into a non-operating mode. When the drive has spun down and can be safely removed from the module, the ID
LED shows a "u" to indicate that the drive is unlocked, spun down and safe to be removed.
Once the VF2-350-SCW-RHD has been configured properly and the software has been set up, operation is identical to
that of a standard SCSI storage subsystem. No specialized software is required.
Configuration, Installation, and Operation 3-4