Currently our office has not been running any form of backup of our database and file servers. In response i came up with a quick and dirty solution using robocopy and some 1TB external drives with robocopy running as a scheduled task at night doing a differential backup. Each week the drive is swapped with the 2nd drive and and is stored as a weekly archive while one is a daily archive.
Should i be doing anything else to secure the backup and to test the data reliability of the backups?