![]() Another way to create a third copy is to rotate a third disk into the RAID1 setup, allowing the RAID system to rebuild and create another identical copy of the data. To make a third copy, save the contents of the drive onto a BluRay disc, DVD, or another disk drive every few days or so, and take the third copy home. With RAID1 setup, creating two identical copies of the same set of data is effortless. The RAID1 setup creates a real-time copy of the working disk. ![]() Using a 2-bay hard disk enclosure in a RAID1 configuration is a good primary storage option. In this case, using a cloud service as an offsite backup may be a good choice, too. The idea is to spread out the risk of losing all backups. This might mean keeping a copy with an IT consultant, taking one to a business owner/manager’s home, keeping it in a bank safe deposit box, or with a trusted family member. Maintain one copy of the business’s data away from the location where the primary backups are stored. Keep One Data Copy at a Different Location ![]() Note that it’s a good idea to test these forms of backup occasionally since technologies that seem like they’re permanent are really not (CDs and DVDs, for example, lose their ability to maintain data after a few years). The idea with using different types of storage for extra copies is to protect against different types of technology failures, obsolescence, or environmental hazards. “Media” means hard disks, CDs, tapes, thumb drives, DVDs, Blu-ray disks, etc. Maintaining at least three copies of data may seem like it increases cost–in the form of purchasing more hard disks or cloud storage–and require more effort to keep everything organized-but the payoff is priceless. This way, should one disk fail, it won’t take the only copy of that file along with it. This diagram helps illustrate this concept.Ĭopy the same data files to different disks. Hard disk backup is a key component of this system, utilizing disk enclosures to allow for expandable disk space and multiple backup copies. Retaining multiple, easily accessed physical copies of business data, on disks that the business possesses and knows the location of, helps recover quickly from data theft or loss.ĬRU recommends the 3-2-1 backup rule to protect data. How to Prepare for Data Loss using the 3-2-1 Data Backup Solution
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