Storage is an important part of any computer. For example, hard drives and USB keys are devised to hold the data produced by individuals on their computers. But when these types of local storage fail, that data is lost, no matter how important it may be. Moreover, it can be a time-consuming process to share local data with other computers, and mostly the amount of local storage that is available is not enough to store all the data desired. A system that cultivates copies of digital data across high-speed LAN (Local Area Network) connections is called a network storage. It is a phrase most generally associated with enterprises and data centers. It is used by IT departments to connect various types of storage devices with data servers for a greater network of users. As the number of storage devices increases, all these devices also become accessible from any server in the network. Designed to back up files, databases and various other data to a central location, its main function is to access all that storage easily via standard network protocols and tools.
Storage networking addresses the problems of local storage by supplying a reliable, external data repository on LAN for all the computers to share effectively. Other than emptying out local storage space, storage networking systems also usually support automated backup programs to avoid critical data loss.
Difference From Network Systems
Storage networking is not all that a lot different from networked systems. It provides storage aid over a network. Just as you can have as little as two machines connected together in a networked system, similarly you can have a storage and server connected together in the networked storage. You can even have hundreds or thousands of computers hooked to hundreds or even thousands of storage systems, both locally or over WANs (Wide Area Networks). Common storage networking systems are as follows:
NAS: Network Attached Storage
FCoE: Fibre Channel over Ethernet
SAN: Storage Area Network
SCSI: Small Computer System Interface
SATA: Serial Advanced Technology Attachment
SAS: Serial Attached SCSI
iSCSI: Internet SCSI
RAID: Redundant Array of Independent (or Inexpensive) Disks
NAS vs. SAN
The two standard types of storage networking are called Network Attached Storage (NAS) and Storage Area Network (SAN). SAN is usually based on business networks. It uses high-end servers with top-notch speed, high capacity disk arrays and Fibre Channel interconnection technology. While NAS is typically used in home networks, which includes installing hardware called NAS devices onto the LAN via TCP/IP. The administrator of a small or home business may connect one NAS device to their LAN (Local Area Network). The NAS acquires its own IP address comparable to the PC and other TCP/IP devices. While administrators of larger enterprise networks need several terabytes of centralized file storage, or a very high-speed file transfer operation service.
Filed in: Networking