Xsan can have up to 64 clients all sharing up to eight volumes. Remember that metadata controllers also count as client systems accessing the SAN. Realistically, that means up to 62 editors can be editing material, and two Xserve G5 metadata controllers will be hosting the volume(s).
There are two general ways to build your SAN:
In this implementation, client nodes are locally authenticated. This means that clients log in to their local directory, and each individual system is in charge of granting access to its own CPUs. The benefit to this implementation is that it is fairly easy to configure, but it is viable only on small SANs of up to six clients. As the SAN grows in size, a NetInfo-configured SAN ...