Sun Microsystems Sun StorEdge T3 - Manual (Page 19)

Chapter 1 Array Configuration Overview 7
FIGURE 1-5 Enterprise Configuration
Note – Sun StorEdge T3 array workgroup and enterprise configurations require a
media-interface adapter (MIA) connected to the Fibre Channel port to connect the
fiber-optic cable. Sun StorEdge T3+ array configurations support direct FC-AL
connections. Refer to the Sun StorEdge T3 and T3+ Array Installation, Operation, and
Service Manual for specific information on cabling the arrays.
In an enterprise configuration, there is a master controller unit and an alternate master
controller unit. In all default enterprise configurations, the master controller unit is
the array positioned at the bottom of an array stack in either a rackmounted or
tabletop installation. The alternate master controller unit is positioned on top of the
master controller unit. The positioning of the master and alternate master controller
units is important for cabling the units together correctly, understanding IP address
assignments, interpreting array command-line screen output, and determining
controller failover and failback conditions.
Note – In an enterprise configuration, you can only interconnect array models of the
same type. For example, you can connect a Sun StorEdge T3+ array to another Sun
StorEdge T3+ array, but you cannot connect it to a Sun StorEdge T3 array.
Application host
FC-AL connection
Interconnect
cables
LAN
Ethernet port
Ethernet
connection
Management host
Host-bus adapters
Ethernet
connection
Master
Alternate
master
controller
unit
controller
unit