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Magnetic tape is the standard for storing large amounts of backup data. For larger organizations with an IT infrastructure in place, tapes are a solid option for local backups.
Disk-based storage includes dedicated backup and file-storage servers, as well as external hard drives.
Network Attached Storage (NAS) is a type of device that offers disk-based storage like a dedicated file server or backup server, but in a small and efficient chassis. While specific features such as scheduled backup or FTP access depend on the model, all NAS implement some form of hardware RAID that makes them a reliable form of backup hardware. For larger networks and disk space requirements, a storage area network (SAN) is a network of storage devices accessed and shared using standard network communications.
CDs, DVDs, and flash drives are convenient and cost-effective. But they can’t be your organization’s primary local backup solution. They are less secure than other backup solutions, and they are not conducive to best backup practices, such as conducting incremental backups. However, they can be great for:
- Creating quick, easy, redundant backups of super-critical files. If you store critical files on a CD, DVD, or flash drive, you’ll be able to easily access your files without specialized backup hardware or software, and without an Internet connection.
- Transferring files from one computer to another.
- Archiving old data. CDs and DVDs are appropriate for storing data that you won’t need to modify, such as photos and finished printed materials. Plus, disks make your archives portable, making it easy to store a copy off-site.
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