OSI/FTAM Programming Reference Manual

Glossary
HP NonStop OSI/FTAM Programming Reference Manual—528611-001
Glossary-30
user abort.
user abort. An association abort initiated by the application. An abort leaves the status of
any interrupted operations undefined. FTAM provides the F-U-ABORT service to allow
applications to request a user abort. Contrast with provider abort.
VFS (virtual filestore). A virtual interface for FTAM requests to a file storage system. The
NonStop FTAM responder implements a VFS that translates requests into Guardian
file-system operations. Files accessible via the Guardian file system can also be
accessed via the VFS component of the NonStop FTAM responder. This includes all
files on the Expand network to which the responder process’ system belongs. The
NonStop FTAM responder uses the VFS to access the Guardian file system in
servicing requests from a remote FTAM initiator.
VFS profile. A NonStop FTAM profile used as a template to configure multiple responder
processes. This is the only valid profile type for NonStop FTAM.
VideotexString. The character-string type of strings conforming to CCITT Recommendation
T.100. These strings contain format effectors.
ViewPoint operations console application. An extensible interactive application for
operators of NonStop systems. The ViewPoint application allows a system or network
to be controlled from a single terminal. It includes several block-mode display screens
for event messages, a block-mode display for system or network status, a
conversational TACL screen, and a facility called Define Process to maintain sessions
with multiple subsystems at the same time.
virtual filestore. See VFS (virtual filestore).
VisibleString. The character-string type of strings containing any of the 94 graphic
characters and the space character, as defined in ISO 646. These strings do not
contain format effectors. Also called ISO646String.
wait mode. In Guardian file-system operations and some APS operations, the mode in
which the called procedure waits for the completion of an I/O operation and then
returns a condition code to the caller. Contrast with nowait mode.
warning. An information-only message returned by the system, indicating a possible
problem. A warning can be significant, but does not cause the command or operation
to fail. A warning is less serious than an error. Contrast with error.
write functional unit. A functional unit that allows the following activities on an association:
•
Establishing the file-open regime
•
Transferring data from the initiator to the responder
•
Releasing the file-open regime
X25AM (X.25 Access Method). A NonStop product that implements the services of the
Network Layer and the Physical Layer for WANs.