In this larger implementation, we have six clients accessing a total of 7.28 TB of storage. The SAN's bandwidth availability is roughly 320 to 400 MB/s. This SAN is connected to an outer network, shown in green. Notice that all trivial Ethernet components are routed to this outer network, and only the nodes of the SAN are on the metadata network. Further, we have a standby metadata controller available to take over MDC duties if the primary MDC fails. For directory services, we have three choices:
Storage
Fibre Channel Switch
Metadata Controllers
Metadata Network
Client Workstations
Outer NetworkMac OS X Server running Open Directory to provide directory services, or a system running a similar service such as Microsoft Active Directory. |