Deployment Guide

Series 5U storage systems for replication – multiple servers, one switch, and one network on page 87 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

Figure 37. Connecting two ME4 Series 2U storage systems for replication – multiple servers, multiple switches, one network on page 88

shows the rear panel of two 2U enclosures with I/O and replication occurring on the same network. Figure 38. Connecting two ME4

Series 5U storage systems for replication – multiple servers, multiple switches, one network on page 88 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.

• 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.

Cabling for replication