Virtual TapeServer 6.03.42 Installation Guide

Cabling and Connecting VTS | 27
The SCSI ports supported by VTS are Ultra160-LVD SCSI, with very high density connector
interface (VHDCI) connectors. High-voltage differential (HVD) SCSI is supported through the
SCSI converter. Connectors are labeled by bus number. Devices connected to different buses
can have the same SCSI ID.
The Fibre Channel ports on VTS support 4Gb Fibre Channel using LC-type connectors.
Connectors are labeled by port number. Devices connected to different ports can have the
same port ID.
Note Make a note of device IDs and the bus or port numbers to which they are connected.
You need this information to set up VTS.
Fibre Channel
Fibre Channel tape drives can be connected directly to the dual-channel fiber controller
included in some VTS models using a male LC type connector. The connector used on the
opposite end of the cable depends on the Fibre Channel tape drive used.
SCSI LVD
LVD tape drives can be connected to any SCSI port on the VTS server module that has not
been reserved for use as a virtual tape drive. The VTS server module uses a female VHDCI
connector, so a cable with a male VHDCI is required. Depending on the type of tape drive,
that end of the cable probably uses a male MD68 connector. Two drives can be daisy chained,
and an LVD external terminator is required on the last drive in the chain. SCSI cable length
for a single tape drive is limited to 25 meters (82 feet). If multiple devices are daisy-chained
on the bus, add the internal and external cable lengths between each device.
HVD SCSI
An HVD SCSI tape drive connection must be routed through a VTS SCSI converter to convert
the LVD SCSI signal to HVD SCSI. A 6-foot male MD68 to male 68 VHDCI SCSI cable
connects the VTS server module to the VTS SCSI converter. Use a male MD68 to male MD68
cable to connect the SCSI converter to the HVD tape drive. Up to two drives can be daisy