RMAN and split mirrors

I'm currently working at a place where a year or so ago they went RMAN the whole hog, ie, all databases backing up via Rman thru NetBackup. It all works a treat - that is until now - we've just built a terabyte-ish system which rman takes a little too long to backup ...

.. Since we're in bed with EMC, the resolution has been deemed to be Timefinder, BCV etc - that is, a glorified version of split mirrors.

A peak thru the Rman doco indicates that using split mirrors with Rman is a case of (surprise surprise) "put tablespace in backup mode, split the mirror, take tablespace out of backup mode"...

Under this scenario - Rman hardly gives me anything that *not* using Rman would...Does anyone have anecdotes to dispute this conclusion ?

Cheers
Connor

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Connor McDonald

http://www.oracledba.co.uk

"Some days you're the pigeon, some days you're the statue..."