> and we're trusting to IBM's never-gonna-fail on the storage side.

If only! :)
Or you could get a leak in your data center which melts a piece of equipment :)

You may get by without hyperswap and use just PPRC if you can be down for a 
little bit after the primary storage fails.
Of course that means you purchase 2x the disk.
Or if you can get your storage team to give you space on 2 different DS8700's 
you can implement a good HA without Hyperswap and PPRC.


Marcy

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