October 2019
Beginner
426 pages
10h 44m
English
As you can see from the descriptions of DAS and NAS, they are storage technologies that are distinguished by their features. Therefore, SAN, like DAS and NAS, is a storage technology too. However, unlike DAS and NAS, SAN is a standalone infrastructure. If we refer to the designation, then SAN is almost identical to LAN. While LAN connects computers on a local computer network, SAN connects storage devices in the area network. As such, a SAN cannot be accessed by other LAN devices. Just because of that, proprietary protocols or Simple Network Management Protocols (SNMPs) provide management for a SAN (see Figure 9.5). Usually, Ethernet or FC is used to connect SAN to servers:
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