Virtual TapeServer 6.04.03 Installation Guide

11
Creating Virtual Tape Drives
After Virtual TapeServer (VTS) is deployed, you must create virtual tape drives (VTDs). Up to
32 VTDs are supported per VTS server, and your VTD license determines how many VTDs
you can create. If you must modify a VTD after it is created, refer to the Virtual TapeServer
Operations and Administration Guide.
Creating a VTD
The following table describes the properties that you must set when defining a VTD. For each
property, this table provides a description and whether each property is presented to the host
server when VTS responds to a host’s query:
The bus ID, target ID, LUN, and initiator ID (not shown) are collectively referred to as the
BTLI. The BTLI enables the host server to precisely identify the VTD; it provides an exact
address of the VTD 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 VTDs over a single
cable (for Fibre Channel VTDs).
Property Description
Presented
to Host?
Name A user-friendly name for the VTD. Yes
Tape type The type of tape that the VTD emulates. Yes
Bus ID The ID of the bus on the VTS server to which the host is
connected. This ID is not presented directly to the host; the
host will see this bus numbered according to its numbering
scheme. If the connection is over Fibre Channel, the bus ID
is associated with a port WWN that is used by the host to
identify the VTS server. If the connection is over SCSI, the
bus ID on the VTS server has no significance to the host.
Indirectly
Target ID The SCSI ID on which the VTD responds. This ID is not
presented to the host if the connection is over Fibre
Channel.
Yes, for
SCSI only
Logical unit
number (LUN)
The sub-ID on the bus. This ID is used by the host for SCSI
and Fibre Channel connections.
Yes
Serial number The serial number or other string describing the VTD. Only
alphanumeric characters should be used.
Yes