Shmuel Metz (Seymour J.) wrote:
But there must be something  canonical across systems that is  unique
to the device for a cross-system ENQ involving devices to work.

The volume serial number.

When duplicates volsers exist, you get prompted at IPL time to indicate which device should remain offline. There's nothing stopping an operator from responding differently as different systems are IPLed. Even without an IPL, you can vary one device offline and then vary another one online with the same volser. Two different physical devices. Same volser.

--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[EMAIL PROTECTED]
http://www.phoenixsoftware.com/

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