yes you do. and not only on production. if your dev box with mongo is rebooted unexpectedly, there goes your data.. you'll have to do a db.repairDatabase() or r

yes you do. and not only on production. if your dev box with mongo is rebooted unexpectedly, there goes your data.. you'll have to do a db.repairDatabase() or restore completely, which can take hours if you have a lot of data.