We are shutting down our data center in a few months. All of our Oracle disgroups, etc, are on the cx-700. After logically removing the diskgroups from the servers(deport, unmount file systems), what are the steps I can take to unbind all luns at once within a storage group instead of doing them one at a time?
Short of having the array reinitialized, I don't think there is any way to "mass destroy" LUNs.
Probably your best bet would be to script something with NaviSecCLI that you can feed the LUN IDs to.
Is the array being completely decommissioned, or shipped elsewhere for reuse?
If it is a total decommission, you may want to consider just leaving it as is and engaging EMC to do a certified wipe of the array. That will certainly take care of it for you, as well as making it safe to dispose of however you like.
If it is going to a reseller I highly recommend getting it wiped clean and certified. If you don't you run the risk of your data being recovered and showing up where you least expect (or desire).
The secure data erasure services is a professional services engagement and you will have to purchase the serivces. That has been my experience, the service was not provided for free.