Enterprise Storage Systems A Efficient Repository For...

Enterprise class storage Earlier many organizations placed storage and backups at the bottom of the IT Priority list. Only organizations in the World Trade Center that had robust data backup systems in place managed to survive. Today, storage, backup, and disaster recovery is a high priority for every organization. The two levels of storage system is live storage and backup where backup is increasingly becoming more and more critical. Enterprise storage is the computer data storage designed for large-scale, high-technology environments of modern enterprises. Enterprise storage is a centralized repository for business information that provides common data management and protection, as well as data sharing functions, through connections†¦show more content†¦Through the SAN, multiple paths are created to all data, so that failure of a server never results in a loss of access to critical information. Enterprise data storage has the story of transitions from one medium to anothe r as the IT industry searched for ways to hold data and deliver access to it fast enough to keep processors busy. Here, the following are the statistics of earlier storage devices. STORAGE DEVICE FROM TO Paper Tape 1950s 1990s Magnetic Tape 1951 Present Rotating Disk 1956 Present Flash Memory 1990s Present Storage is required by a computer because its memory loses all its data when it s switched off; DRAM is volatile. When a computer is first switched on its memory is empty and both code, which tells the computer what to do, and data, the information that is processed, needs loading into memory from a persistent - non-volatile – store. Direct attached storage (DAS), storage area network (SAN), and network attached storage (NAS) are the three basic types of storage. DAS is the basic building block in a storage system, and it can be employed directly or indirectly when used inside SAN and NAS systems. NAS is the highest layer of storage and can be built on top of a SAN or DAS storage system. SAN is somewhere between a DAS and a NAS. Direct Attached Storage (DAS) the most basic storage subsystem that provides block-level storage and it s the building block for SAN and NAS. The performance of a SAN or NAS is ultimately dictated by the