A device is considered asymmetric if it is not attached to one or more systems in the STAM complex. To indicate that the T80 device is not available on system VMT2, specify it as follows:
T80 DEV 180,(180,X),280
CA VM:Tape marks the T80 device as unavailable so that STAM does not try to use it. If no CA VM:Tape DEVICE configuration file record exists for the device, you should still specify a device address for it on the DEV entry so that the device can be properly referenced in a STAM VARY or STAM DU command.
DEV entries can also be inserted for devices that have been logically defined but do not exist on any system. For example:
X90 DEV (490,X),(490,X),(490,X)
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