Definition: A storage area network (SAN) is a type of local area network (LAN) designed to handle large data transfers. A SAN typically supports data storage, retrieval and replication on business networks using high-end servers, multiple disk arrays and Fibre Channel interconnection technology.SAN technology is similar but distinct from network attached storage (NAS) technology. While SANs traditionally employ low-level network protocols for transfering disk blocks, a NAS device typically works over TCP/IP and can be integrated fairly easily into home computer networks.
The term SAN can sometimes refer to system area networks instead of a storage area network. System area networks are clusters of high performance computers used for distributed processing applications requiring fast local network performance. Storage area networks, on the other, are designed specifically for data management.
The term SAN can sometimes refer to system area networks instead of a storage area network. System area networks are clusters of high performance computers used for distributed processing applications requiring fast local network performance. Storage area networks, on the other, are designed specifically for data management.
Also Known As: Storage Area Network, System Area Network
Definition:NAS allows files to be stored and retrieved across a computer network. A NAS includes a dedicated hardware device often called the head that connects to a local area network (usually via Ethernet). This NAS "server" authenticates clients and manages file operations in much the same manner as traditional file servers, through well-established network protocols like NFS and CIFS/SMB.
NAS systems attempt to reduce the cost associated with traditional file servers. Rather than utilize general-purpose computer hardware and a full-featured network operating system (NOS) like NetWare, NAS devices generally run an embedded operating system on simplified hardware. NAS boxes support hard drives, and sometimes tape drives, but lack peripherals like a monitor or keyboard. Designed specifically for network storage, a NAS tends to be easier to manage than a file server.The term "NAS" is often confused with the related term "SAN" (Storage Area Network). In a nutshell, NAS devices are just one type of entity that can exist on a SAN.
Also Known As: Network Attached Storage
Also Known As: Network Attached Storage
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