The MIB module for Third Party Copy(TPC):
Third Party Copy derives its name from the fact
that there are three entities involved in the 
process of copying data either for backup operations
or restore operations. The three entities:
- entity originating the copy commands
- data source for the copy
- data destination for the copy. 

The entity originating the copy commands to perform
the data transfer can use the SCSI Extended Copy 
(XCOPY).

The TPC feature exposes a disk target with
Logical Unit Number(LUN) 0 that is capable of 
processing the SCSI Extended Copy Command (XCOPY) 
to transfer data from a specified source to a 
specified destination. On receiving the XCOPY 
command, the TPC target performs the actual data 
transfer from the data source to the data 
destination on behalf of the entity issuing the 
XCOPY command.

The MIB provides an interface to configure the
TPC targets. The user specifies the module and
the VSAN on which the TPC feature needs to be 
configured. Once the feature has been configured
target ports are created on the specified module
and VSAN that are XCOPY capable. Any application
that can source a XCOPY command can use these 
targets to perform data movement.

Acronyms
The following acronyms are used in this document: 

XCOPY: 
   SCSI Extended Copy Command.
     
TPC:
   Third Party Copy.

LUN:
   Logical Unit Number. 
   
VSAN: 
   Virtual Storage Area Network.