Designing Routed Fibre Channel SANs Using the HP StorageWorks FC Multi-Protocol Routers and Blades, and HP StorageWorks 1606 SAN Extension Switch and Extension Blade
Source: Hewlett-Packard (HP)
Storage Area Networks (SANs) are networks primarily intended to provide connectivity between hosts and storage devices such as disks, RAID arrays, and tape libraries. SANs, unlike LANs, simply cannot lose data. Applications and operating systems are generally tolerant of dropped packets and variable performance on the LAN, because software that relies on the LAN is built with an understanding that LANs sometime run slowly and drop data. However, these same software components are designed with the assumption that their storage would be fast and reliable.