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Cabling Your Cluster Hardware
Cabling a SAN-Attached Cluster to a Dell|EMC Storage System
The supported Dell|EMC storage systems are configured with one storage
processor enclosure (SPE), at least one disk array enclosure (DAE) enclosure,
and two standby power supplies (SPSs).
The cluster nodes attach to the storage system using a redundant switch
fabric and Fibre optic cables with duplex LC multimode connectors.
The switches, the HBA ports in the cluster nodes, and the SP ports in the
storage system use duplex LC multimode connectors. The connectors consist
of two individual fibre optic connectors with indexed tabs that must be
inserted and aligned properly in the small form-factor pluggable (SFP)
module connectors on the Fibre Channel switches and the connectors on the
cluster nodes and storage systems.
See "Cabling Your Cluster for Public and Private Networks" on page 19 for
more information on the duplex LC multimode fibre optic connector.
Each HBA port is cabled to a port on a Fibre Channel switch. One or more
cables connect from the outgoing ports on a switch to a storage processor on a
Dell|EMC storage system.
NOTE:
Dell|EMC CX3-20f, CX3-40f, and CX3-80 storage systems have more than two
fibre-channel ports per SP. You can also connect the additional ports to the
redundant fabrics to achieve higher availability.
Table 2-3 provides information for cabling your storage system to the Fibre
Channel switch.
Figure 2-10 and Figure 2-11 illustrate methods for cabling a SAN-attached
cluster to the CX3-20 and CX3-40c storage systems, respectively.
Figure 2-12 illustrates a method for cabling a SAN-attached cluster to a
CX3-80 storage system.
Table 2-3.
Storage System Cabling Description
Storage System
SP Ports
Fibre Optic
Cables Required
Cabling
Description
CX3-10c, CX3-20/c,
CX3-40/c
Two ports per SP
4
Attach one cable
from each storage
processor port to
the Fibre Channel
switch.
CX3-40f, CX3-80
Four ports per SP
At least 4 and up to 8
CX3-20f
Six ports per SP
At least 4 and up to 12
