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Andy Galbraith reminds us to check database consistency:

At the end of the day you can’t afford *not* to run CHECKDB- you just can’t. ¬†Your database objects are only as reliable as your last clean CHECKDB (meaning your last CHECKALLOC + CHECKCATALOG + individual CHECKTABLE’s on all of your tables – but more on that in a moment).

If you are not running regular CHECKDB, you may have endless unknown corruption across your databases, and you won’t find out until someone tried to access the data.

Even if your production instance is running at 100% all the time (which is a good indicator that you need more resources), you can run CHECKDB against backups restored to a different server.