Deployment Guide

● Connect two ports from each controller module in the left storage enclosure to the left switch.
● Connect two ports from each controller module in the right storage enclosure to the right switch.
● Connect two ports from the controller modules in each enclosure to the middle switch.
Use multiple switches to avoid a single point of failure inherent to using a single switch, and to physically isolate replication
traffic from I/O traffic.
Figure 37. Connecting two ME4 Series 2U storage systems for replication – multiple servers, multiple switches, one
network
1. 2U controller enclosures 2. Two switches (I/O)
3. Connection to host servers 4. Switch (Replication)
Figure 38. Connecting two ME4 Series 5U storage systems for replication – multiple servers, multiple switches, one
network
1.
5U controller enclosures 2. Two switches (I/O)
3. Connection to host servers 4. Switch (Replication)
Multiple servers, multiple switches, and two networks
Connecting two ME4 Series 2U storage systems for replication– multiple servers, multiple switches, two networks on page
94 shows the rear panel of two 2U enclosures with I/O and replication occurring on different networks. Connecting two ME4
Series 5U storage systems for replication – multiple servers, multiple switches, two networks on page 94 shows the rear panel
of two 5U enclosures with I/O and replication occurring on different networks.
● The switch that is on the left supports I/O traffic to local network A.
● The switch that is on the right supports I/O traffic to remote network B.
● The Ethernet WAN in the middle supports replication traffic.
If there is a failure at either the local network or the remote network, you can fail over to the available network.
The following figures represent two branch offices that are cabled for disaster recovery and backup:
Cabling for replication
93