Virtual TapeServer 6.03.41 Installation Guide

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Reconfiguring and Validating Virtual Tape Connections
Virtual TapeServer (VTS) is preconfigured with virtual tape connections. Edit the virtual tape
connections, if necessary, to reflect exact connections between the hosts and virtual tape
drives in your environment. You can then validate that the NonStop server(s) in the
environment can back up data to all virtual tape drives configured in VTS.
Modifying virtual tape connections
When modifying a virtual tape connection in VTS, you must define a virtual tape’s properties.
The following table describes the properties and specifies whether each property is presented
to the NonStop server host when the virtual tape responds to a host’s query:
Property Description
Presented
to Host?
Bus ID The ID of the bus to which the host is connected Yes
Target ID The SCSI ID on which the virtual tape device responds Yes
Logical unit
number (LUN)
The sub-ID on the bus Yes
Initiator ID The SCSI ID of the host Yes
Name A user-friendly name for the virtual tape device Yes
Media type The type of tape drive that the virtual tape device
emulates
Yes
Host type The type of host (NonStop S-series server, NonStop
Integrity server, UNIX server, or Windows server)
No
Serial number The serial number or other string describing the virtual
tape device
Yes
The first four properties are collectively referred to as the BTLI of the virtual tape drive. The
BTLI enables the NonStop host to precisely identify the virtual tape drive; it provides an
exact address of the virtual tape drive’s location on the bus. Remember that the host is
connected to VTS by a single cable. The BTLI thereby enables you to multiplex the cable to
identify multiple virtual tapes over a single cable.