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 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 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.
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)
78 Cabling for replication
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