HP P2000 G3 MSA Array Systems - Manual (Page 38)

38 Connecting hosts
8Gb per second. The P2000 G3 FC MSA System controller enclosures can also be cabled to support the
Remote Snap replication feature (licensed option) via the FC ports. These models support Fibre Channel
Arbitrated Loop (FC-AL or “loop”) topology by default. Connection mode can be set to loop or
point-to-point. Loop protocol can be used in a physical loop or in a direct connection between two devices.
Point-to-point protocol is used to connect to a fabric switch. P2000 G3 FC MSA System controllers employ
FC ports in either of two capacities:
• To connect two storage systems through a Fibre Channel switch for use of Remote Snap replication.
• For attachment to FC hosts directly, or through a switch.
The first usage option requires valid licensing for the Remote Snap replication feature, whereas the second
option requires that the host computer supports Ethernet, FC, and optionally, multipath I/O.
Connecting direct attach configurations
P2000 G3 FC MSA System LFF and P2000 G3 FC MSA System SFF support up to four direct-connect
server connections, two per controller module. Connect appropriate cables from the servers’ HBAs to the
controller host ports as described below, and shown in the following illustrations.
To connect the P2000 G3 FC MSA System controller to a server or HBA switch — using the controller’s FC
host ports — select Fibre Channel cables supporting 2/4/8Gb data rates, that are compatible with the
controller module’s host port SFP connector. Such cables are also used for connecting a local storage
system to a remote storage system via a switch, to facilitate use of the optional Remote Snap replication
feature.
The table below maps SFP transceiver data rates to relative fiber optic cable characteristics (i.e., cable
length, multimode fiber type (MMF), and ISO/IEC optical multimode cable performance standards). When
transferring data through FC connections, cable lengths should not exceed the lengths listed for each given
fiber type and performance code within the applicable data rate (2/4/8Gb) class.
Single controller configuration
One server/one HBA/single path
Table 5 Maximum cable lengths for 850nm Fibre Channel SFP transceivers
SFP data Representative FC cable types Cable performance code
Data rate MMF FC cable length designators OM1 OM2 OM3
8Gbps 21m with 62.5μm fiber type X
50m with 50μm fiber type X
150m with 50μm fiber type X
4Gbps 70m with 62.5μm fiber type X
150m with 50μm fiber type X
380m with 50μm fiber type X
2Gbps 150m with 62.5μm fiber type X
300m with 50μm fiber type X
500m with 50μm fiber type X
6Gb/s
Server