Enterprise RAID solutions and other redundant SAN-based technology is not cost-effective for small companies with relatively few employees, but tape backup and low-cost NAS (network-attached storage) systems can do the trick in most cases. An accounting firm or medical office may need immediate restore capability, for instance, while a service business--an office cleaning company, say--may be able to survive longer without instant data access.
Large companies with hundreds or thousands of employees typically need significantly more robust--and more expensive--storage systems that comprise a variety of technologies. A RAID array can suffer a hard-drive failure without losing any data, but it won't do much good when data loss stems from fire, theft, virus or user error. Here again, tape-backup solutions are essential in providing recallable static storage that can reside on- or off-site.
Comparing Storage Options
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