Chapter 3. Operating NetView FTP V2.2.1 MVS - IBM

File-Transfer Requests
You use NetView FTP V2.2.1 MVS by creating file-transfer requests and submitting
them to NetView FTP V2.2.1 MVS for processing. After you submit a request,
NetView FTP V2.2.1 MVS puts it in a VSAM file, called the request queue, where it
waits to be processed. Request processing takes place independently of request
queuing.
To process requests, NetView FTP V2.2.1 MVS uses components called servers.
For transfers between nodes in an SNA network, it uses NetView FTP SNA servers
(abbreviated to SNA servers in this book). For transfers within an OSI network, it
uses NetView FTP OSI servers (abbreviated to OSI servers in this book).
Each SNA server has its own logical unit (LU) name and runs independently of any
other server. An SNA server obtains a request from the queue and initiates a conversation
with an SNA server at the remote location specified in the request. The
two SNA servers work together to transfer the file specified in the request, and then
terminate the conversation.
An OSI server is registered as an end user of OSI/File Services. An OSI server
obtains a request from the queue, and passes it to OSI/File Services, which conducts
the file transfer. An OSI server does not transfer files itself.
How transfers are handled is described in more detail in “How NetView FTP V2.2.1
MVS Works” on page 6.
4 NetView FTP V2 MVS Installation, Operation, and Administration