
480 SAN Multiprotocol Routing: An Introduction and Implementation
17.5.1 Definitions
One or more SAN fabrics interconnected by a SAN router form a metro SAN, or
mSAN. An mSAN is characterized by low latency, high quality, and high
bandwidth ISLs. In our example, the left-side router and attached switch and disk
are a very small mSAN, and the right-side router is another very small mSAN.
An internetworked SAN, or iSAN, is a collection of mSANs connected over iFCP
by using two or more SAN routers, where at least one mSAN is at a distant
(non-metro) location. It is characterized by high latency and low bandwidth ISLs.
In our example, the whole ...