Every user at some point of time or the other experiences a system crash wherein the computer stops working and all the information stored in it is inaccessible either because it has been wiped out or it has been corrupted. Such a situation calls for data recovery but prevention being better than cure, efforts should be dedicated towards avoiding its incidence through application of the RAID storage concept.
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RAID stands for Redundant Array of Independent/Inexpensive disks and is a strategy wherein data is stored into a number of hard disk drives as a result of which the risk of losing it is greatly minimized. There are different configurations of RAID storage ranging from 0 to 6, an additional alternative being JBOD RAID which is slightly different but equally effective.
JBOD, an acronym for Just a Bunch of Disks/Drives, is a non redundant configuration which attaches more number of drives to the existing system. Although it does not make any difference to the performance, the main advantage of JBOD RAID is that it can bunch together all types of drives, no matter how odd-sized they might be, into a single volume and treat them as an entity.
Another variety of storage option which is strongly recommended by computer experts is NAS RAID wherein NAS stands for Network Attached Storage. Installing a NAS RAID implies that data from multiple computers is consolidated into a single device which in turn is automatically linked to an online back-up service. Hence, even though implementation of NAS RAID might cost a little more than usual, the advantages far outweigh the expenditure.
Originally designed to overcome problems associated with NAS RAID, SAN or Storage Area Network is a device network which connects the various storage resources to a variety of servers. In spite of being segregated from the LAN and WAN, the structure of SAN storage enables every user of LAN and WAN to access the storage space and devices.
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