[dsp1234]

or reliability

If our company had to delete all customer data for a particular customer, then I would need to:

restore 6 months of database backups individually, remove the data, then run then take and store each backup again.

have 3 years worth of tape backups shipped back to us from our data protection company. Restore the databases off of them, delete the data, store them back on tape, and have them shipped back to the long term storage facility.

[estebank]

Backup users' data encrypted with a recovery key. Delete the key, presto, the users' data is no longer accesible.