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2 Sun StorEdge T3 and T3+ Array Configuration Guide • August 2001
The array can be used either as a standalone storage unit or as a building block,
interconnected with other arrays of the same type and configured in various ways to
provide a storage solution optimized to the host application. The array can be placed
on a table top or rackmounted in a server cabinet or expansion cabinet.
The array is sometimes called a controller unit, which refers to the internal RAID
controller on the controller card. Arrays without the controller card are called
expansion units. When connected to a controller unit, the expansion unit enables you
to increase your storage capacity without the cost of an additional controller. An
expansion unit must be connected to a controller unit to operate because it does not
have its own controller.
In this document, the Sun StorEdge T3 array and Sun StorEdge T3+ array are
referred to as the array, except when necessary to distinguish between models.
Note – The Sun StorEdge T3 and T3+ arrays are similar in appearance. In this
document, all illustrations labeled Sun StorEdge T3 array also apply to the Sun
StorEdge T3+ array, except when necessary to distinguish specific model features.
In these instances, the array model is specified.
Refer to the Sun StorEdge T3 and T3+ Array Installation, Operation, and Service Manual
for an illustrated breakdown of the array and its component parts.
Controller Card
There are two controller card versions that are specific to the array model. Both
controller cards provide the connection ports to cable the array to data and
management hosts, but the type of connectors vary between models.
The Sun StorEdge T3 array controller card contains:
■ One Fibre Channel-Arbitrated Loop (FC-AL) port, which provides data path
connectivity to the application host system. This connector on the Sun StorEdge
T3 array requires a media interface adapter (MIA) to connect a fiber-optic cable.
■ One 10BASE-T Ethernet host interface port (RJ-45). This port provides the
interface between the controller card and the management host system. An
unshielded twisted-pair Ethernet cable (category 3) connects the controller to the
site’s network hub. This interface enables the administration and management of
the array via the Sun StorEdge Component Manager software or the command-line
interface (CLI).
■ One RJ-11 serial port. This serial port is reserved for diagnostic procedures that
can only be performed by qualified service personnel.
FIGURE 1-1 shows the location of the controller card and the connector ports on the
Sun StorEdge T3 array.