SplitSite Network Requirements
This topic describes the requirements for networks in a SplitSite configuration.
General Network Requirements
All network components in a SplitSite configuration must have more than 155 Mbps minimum capacity, end-to-end.
A‑Link Network Requirements
A-Link networks in a SplitSite configuration require the following:
- NICs must be at least 1 Gb and full-duplex; use 10 Gb, if possible.
- For systems running FT-protected virtual machines (VMs), A-Links require:
- A minimum bandwidth of 1 Gbps per VM
- A maximum inter-site latency of 2 ms, round-trip time
- For systems running only HA-protected VMs, A-Links require:
- A minimum bandwidth of 155 Mbps per VM
- A maximum inter-site latency of 10 ms, round-trip time
- Do not use a common card (multiport NIC) for both A-Links.
- A-Links can be dedicated point-to-point fiber connections. If they are not, they must be configured on a VLAN. The A-Links can share a single VLAN, or they can use separate VLANs. Multiple everRun systems can share the same VLAN(s) for use by the A-Links.
- When fault-tolerant SMP is used, the A-Link networks must be a minimum of 1Gbps.
Private Network Requirements
The private network in a SplitSite configuration requires the following:
- NICs must be at least 1 Gb and full-duplex; use 10 Gb, if possible.
- A minimum bandwidth of 155 Mbps per VM.
- A maximum inter-site latency of 10 ms, round-trip time. Switches and/or fiber-to-copper converters connected to the private network must be non-routed and non-blocking, with a round-trip latency that does not exceed 10 ms. Calculate latency at 1 ms for each 100 miles of fiber, plus any latency added by non-routed, non-blocking switches or fiber converters.
- The private network can be a dedicated point-to-point fiber connection. If it is not, it must be configured on a private VLAN. VLANs used to connect the private-network ports must not add any filtering on any of the network equipment between the two VLAN switch ports that are connected to the everRun PMs.
Business Network Requirements
Business networks in a SplitSite configuration require the following:
- Configure the network on a business VLAN. The business network for both nodes must be on this VLAN.
- The nodes must be in the same layer-2 multicast domain.
- Connect the business networks on each PM to a switch separate from the other PM’s switch.
- An everRun system requires at least one business network. All of these requirements apply to each business network.
Management Network Requirements
A management network in a SplitSite configuration requires the following:
Related Topics
SplitSite Configurations
Network Architecture Overview