Deployment Guide

Table Of Contents
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.
Dual-controller module configuration for replication
Cabling two ME4 Series controller enclosures that are equipped with dual-controller modules for replication.
Multiple servers, one switch, one network
Connecting two ME4 Series 2U storage systems for replication multiple servers, one switch, and one network on page
92 shows the rear panel of two 2U enclosures with I/O and replication occurring on the same network. Connecting two ME4
Series 5U storage systems for replication multiple servers, one switch, and one network on page 92 shows the rear panel of
two 5U84 enclosures with I/O and replication occurring on the same network.
In the configuration, Virtual Local Area Network (VLAN) and zoning could be employed to provide separate networks for iSCSI
and FC. Create a VLAN or zone for I/O and a VLAN or zone for replication to isolate I/O traffic from replication traffic. Either
configuration would be displayed physically as a single network, while logically, either configuration would function as multiple
networks.
Figure 35. Connecting two ME4 Series 2U storage systems for replication multiple servers, one switch, and one
network
1. 2U controller enclosures
2. Switch (I/O, replication)
3. Connection to host servers
Figure 36. Connecting two ME4 Series 5U storage systems for replication multiple servers, one switch, and one
network
1. 5U controller enclosures
2. Switch (I/O, replication)
3. Connection to host servers
Multiple servers, multiple switches, and one network
Connecting two ME4 Series 2U storage systems for replication multiple servers, multiple switches, one network on page
93 shows the rear panel of two 2U enclosures with I/O and replication occurring on the same network. Connecting two ME4
Series 5U storage systems for replication multiple servers, multiple switches, one network on page 93 shows the rear panel
of two 5U enclosures with I/O and replication occurring on the same network.
For optimal protection, use multiple switches for host I/O and replication.
92
Cabling for replication