User talk:Vojiaku

SAN (STORAGE AREA NETWORK) A Storage Area Network (SAN) is an architecture which attaches storage devices (disk arrays etc) to server in such a way that it appears locally to the operating system. The storage is remote in this case. SAN is generally used to connect all storage devices to various servers. It consists of SAN hardware and SAN Software. The hardware has a high-connectivity between storage devices while the SAN Software monitors, manages and configures the SAN. It can also be defined as a high-speed sub-network of shared storage devices.

SAN architecture works in a way that makes all storage devices available to all servers on a LAN or WAN.

Most storage networks uses SCSI protocols to communicate between servers and disk drives.

Benefit:– •	You do not need to physically move storage device from one server to another server. •	It has the ability to allow servers to boot from SAN itself •	SAN can be configured to allow replacement of faulty server.

NAS (NETWORK-ATTACHED STORAGE) A Network Attached Storage (NAS) is a file-level data storage that is attached to a computer network providing data access to network users. NAS contains 2 or more hard disk arranged in redundant arrays of independent disk (RAID).

SAN versus NAS SAN is like having storage disk directly connected to the server, while NAS is a remote connection of storage disk to a server via a network connection.

By Valentine Ojiaku