Need to set up a catalog backup to write two sets of tapes

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Hi,

Are you able to point me to a KB article or even another thread that describes setting up a catalog backup to write two sets of tapes in two different sites and records the details of both sets of tapes in the DR file?

We have a clustered master server configuration across two sites and wish to protect the catalog to a remote site no matter which site the master server is active from.

Our media servers in site one have no access to tape drives in site two and vice versa.

I've tried searching, reviewing the admin guides and even experimented locally without much success.

Many thanks,

Alun.