Keep the data secure with Offline storage

As the name suggests, Offline storage can be defined, where the data is physically removed from the network and cannot be accessed by the computer. It is commonly referred to as “archive” or “back up” storage and is typically a tape drive or low-end disk drive (virtual tape). Offline or disconnected storage is designed for storage of data for long periods of time, because data is archived, offline storage appliances focus on data accuracy, protection, and security. The medium is recorded, usually in a secondary or tertiary storage device, and then physically removed or disconnected. It must be inserted or connected by a human operator before a computer can access it again. Unlike tertiary storage, it cannot be accessed without human interaction. Optical discs and flash memory devices are most popular, and to much lesser extent removable hard disk drives. In enterprise uses, magnetic tape is predominant. Older examples are floppy disks, Zip disks, or punched cards.
Off-line storage is used to transfer information, since the detached medium can be easily physically transported. Additionally, in case a disaster, for example a fire, destroys the original data, a medium in a remote location will probably be unaffected, enabling disaster recovery. Off-line storage increases general information security, since it is physically inaccessible from a computer, and data confidentiality or integrity cannot be affected by computer-based attack techniques. Also, if the information stored for archival purposes is accessed seldom or never, off-line storage is less expensive than tertiary storage.
Backing up to tape is very useful in terms of data created online and then as it ages or becomes less important to the company. Many companies migrates the data to less expensive storage media like tape. When the tapes contain replicas of online data, or it simply needs to be kept for archive purposes, it is often shipped offsite and offline as part of the company's data migration plan. Offline storage meant exclusively tapes on shelves or carted off to vaults. Companies like tape because it's removable, relatively cheap, and has a long shelf life for archival. But many companies would like to see those same attributes apply to disk, and now they can.
Offline storage is very practical from the point of view of data transmission medium, can also serve as a good back-up device since it is remotely located, hence it will not be affected by any disaster that might hit the direct source of data. Offline storage also provides good security for data since you can't easily access it from a computer system.