Storage area network

A storage area network (SAN) is a hardware device that contains a large number of fast disks, such as solid-state drives (SSDs), and is isolated from the LAN as it has its own network. A SAN typically has host bus adapters (HBAs) (https://searchstorage.techtarget.com/definition/host-bus-adapter) and switches (https://searchnetworking.techtarget.com/definition/switch) attached to storage arrays and servers. The disks are set up with some form of redundancy, such as RAID 5 and upward, so that the storage space is redundant:

Figure 16: Storage area network

Each switch and storage system on the SAN must be interconnected, ...

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