Fabric Topology Limits; Factors To Consider When Implementing A Fabric Topology - HP Surestore 64 - Director Switch Planning Manual

Fabric Topology Limits

Operation of multiple directors in a fabric topology is subject to the following topology
limits. Consider the impact of these limits when planning the fabric.
•
Fabric Elements
Up to 16 interconnected directors are supported in a single fabric. Each fabric element
is defined by a unique domain identification (domain ID) that ranges between 1 and 15.
A domain ID of 0 is invalid.
•
Inhomogeneous fabric
Vendor interoperability in the fabric environment is supported, therefore fabric
elements can include directors, other managed products, and products supplied by
other OEMs. To determine if interoperability is supported for a product, or if
communication restrictions apply, refer to the supporting publications for the product
or contact your local HP sales office for the latest configuration information.
•
Number of ISLs
The maximum number of ISLs per director is 32 (one-half of the number of director
ports).
•
Hop count
The supported limit of ISL connections traversed (hop count) in a single path through
the fabric is two, not to exceed 10 kilometers.
Note The hop count is equal to the number of ISL connections traversed in a single
path, not the total number of ISL connections between devices. As shown in
Figure 19, the number of ISL connections between switch S
while the number of hops is one.

Factors to Consider When Implementing a Fabric Topology

Director-based fabrics offer scalable, high-performance, and high- availability connectivity
solutions for the enterprise. To enable a multiswitch fabric, directors must be defined to
the HP EFC Manager application, and must be physically cabled to form the requisite ISL
and S is four,
1 2
Multiswitch Fabric Support 75