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A Storage Area Network (SAN) is an architecture to attach remote computer storage devices such as disk array controllers, tape libraries and CD arrays to servers in such a way that to the operating system the devices appear as locally attached devices. Although cost and complexity is dropping, as of 2007, SANs are still uncommon outside larger enterprises.

Komponen utama dari SAN mencakup :
– SAN Storage
– SAN Switch
– Tape Library
– Software pendukung misalnya Backup Software, Storage Management etc.
– Host Bus Adapter
– etc…

Principal pemasok SAN antara lain lho… (puyeng kalo nyebutin semua..)
– Storage : Hitachi Data System (HDS), EMC, IBM, HP etc
– SAN Switch : Cisco, Brocade etc..
– Tape Library : Sun Storagetek, ADIC, IBM etc..
– Software pendukung : HDLM, Veritas, AOS etc
– Host Bus Adapter : Qlogic, JNI etc..