HP MSA 2040 SAN Storage - Manual (Page 38)

38 Connecting hosts
Host ports and replication
MSA 2040 SAN controller modules can use qualified SFP options of the same type, or they can use a
combination of qualified SFP options supporting different interface protocols. If you use a combination of
different protocols, then host ports 1 and 2 are set to FC (either both16 Gbit/s or both 8 Gbit/s), and host
ports 3 and 4 must be set to iSCSI (either both 10GbE or both 1 Gb). Each host port can perform I/O or
replication. In combination environments one interface—for example FC—might be used for I/O, and the
other interface type—10GbE or 1 Gb iSCSI—might be used for replication.
Single-controller configuration
One server/single network/two switches
The diagram below shows the rear panel of two MSA 2040 SAN controller enclosures with both I/O and
replication occurring on the same network. Each enclosure is equipped with a single controller module.
The controller modules can use qualified SFP options of the same type, or they can use a combination of
qualified SFP options supporting different interface protocols.
Figure 25 Connecting two storage systems for Remote Snap: one server/two switches/one location
Host ports used for replication must be connected to at least one switch. For optimal protection, use two
switches, with one replication port from each controller connected to the first switch, and the other
replication port from each controller connected to the second switch. Using two switches in tandem avoids
the potential single point of failure inherent to using a single switch.
Dual-controller configuration
Each of the following diagrams show the rear panel of two MSA 2040 SAN controller enclosures
equipped with dual-controller modules. The controller modules can use qualified SFP options of the same
type, or they can use a combination of qualified SFP options supporting different interface protocols.
Multiple servers/single network
The diagram below shows the rear panel of two MSA 2040 SAN controller enclosures with both I/O and
replication occurring on the same physical network.
Figure 26 Connecting two storage systems for Remote Snap: multiple servers/one switch/one location
6Gb/s S S A 6Gb/s S S A
MSA 2040 SAN Storage system
I/O switch
(replication)
Switch
To host server
MSA 2040 SAN Storage system
IOM blank IOM blank
6Gb/s S S A
6Gb/s S
S A
6Gb/s S S A
6Gb/s S
S A
MSA 2040 SAN Storage system
Switch To host server(s)
MSA 2040 SAN Storage system