5190/5194 Modular Tape Subsystem Manual

Using TMDS or the TSM Package
5190/5194 Modular Tape Subsystem Manual—426878-002
5-4
TMDS Highlights (NonStop Himalaya K-Series
Servers)
TMDS Highlights (NonStop Himalaya K-Series
Servers)
The TMDS TAPE subsystem provides operational information on all supported tape
drives. The following information summarizes selected details that you should know
about the TMDS FLASH and STATUS commands.
The FLASH Command
The FLASH ON command flashes (on and off) the internal yellow locator LED inside
the tape drive BEB (the tape drive must be attached to a 3216 tape controller). This
command is useful when service providers need to verify the location of a faulty BEB.
The FLASH OFF command turns off the LED. For a description of each of the BEB
LEDs, see Replacing a BEB on page 6-2.
The 3216 controller can also light the locator LED, without flashing it, if the controller
detects an error.
For more information, enter the following command at the TAPE subsystem prompt:
The FLASH command syntax is:
[DRIVE] $drive
is the logical device number or name of the tape drive whose BEB locator LED is
affected by this command. There is no default value; you must enter a value for
this parameter.
[SWITCH] { ON | OFF }
specifies the action for the BEB locator LED. ON means to flash the LED on and
off. OFF means to turn off the LED. The default action is ON.
Specify OFF to turn off the BEB locator LED regardless of why it was lit. (The BEB
locator LED can be activated as a result of the FLASH command or by the 3216
controller when it detects an error.)
HELP FLASH
FLASH [DRIVE] $drive [, [SWITCH] { ON | OFF } ]