HP Array Controller HSG V8.7 Software - Manual (Page 177)

Troubleshooting 4–23
Using VTDPY to Check for Communication Problems
Use the virtual terminal display (VTDPY) utility to get information
about the following communications:
n Communication between the controller and its hosts
n Communication between the controller and the devices in the
subsystem
n The state and I/O activity of the logical units, devices, and device
ports in the subsystem
Use the following steps to run VTDPY:
1. Connect a terminal to the controller. The terminal must support ANSI
control sequences.
2. Set the terminal to NOWRAP mode to prevent the top line of the display
from scrolling off of the screen.
3. Start VTDPY with the following command:
RUN VTDPY
Use the key sequences and commands liosted in Table 4–4 to control
VTDPY.
Table 4–4 VTDPY Key Sequences and Commands
Command Action
Ctrl/C Enables command mode; after entering Ctrl/C, enter
one of the following commands and press Return:
CLEAR
DISPLAY CACHE
DISPLAY DEFAULT
DISPLAY DEVICE
DISPLAY HOST
DISPLAY STATUS
HELP
INTERVAL seconds (to change update interval)
Ctrl/G Updates screen
Ctrl/O Pauses (and resumes) screen updates
Ctrl/R Refreshes current screen display
Ctrl/Y Exits VTDPY