Reference Quorum Networks

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Reference Quorum Networks

In the active-active DC solution, it is recommended that a quorum server be deployed at a third site to perform arbitration. The quorum server and two DCs can be connected by a GE or 10GE network.

A storage system can use either an independent front-end port or a management port as the quorum port. The following describes their respective network connections.

Using a Front-end Port as a Quorum Port

Table 9-1 lists the quorum network diagrams when a front-end port is used as the quorum port.

Table 9-1 Quorum network diagrams (using a front-end port as the quorum port)

Scenario	Network Diagram	Description
Single-DC deployment		The quorum server connects to the storage systems via two Ethernet switches. Each controller on each storage system uses one GE/10GE port to connect to the quorum server. The quorum server uses two ports to connect to every controller on both storage systems.
	No switch is used. The storage systems and quorum server are connected directly. The quorum server can use a maximum of four ports (four IP addresses) to connect to the storage systems.
Cross-DC deployment		The quorum server is deployed at a third site. Ensure that the quorum site communicates properly with the active-active DCs. If access switches are deployed, the quorum network and HyperMetro replication network use the same access switches to connect to different NICs on the core switches for fault isolation. If access switches are not deployed, the quorum and HyperMetro replication networks directly connect to different NICs on the core switches for fault isolation.

Scenario

Network Diagram

Description

Single-DC deployment

The quorum server connects to the storage systems via two Ethernet switches.
Each controller on each storage system uses one GE/10GE port to connect to the quorum server. The quorum server uses two ports to connect to every controller on both storage systems.

No switch is used. The storage systems and quorum server are connected directly.

The quorum server can use a maximum of four ports (four IP addresses) to connect to the storage systems.

Cross-DC deployment

The quorum server is deployed at a third site. Ensure that the quorum site communicates properly with the active-active DCs.
If access switches are deployed, the quorum network and HyperMetro replication network use the same access switches to connect to different NICs on the core switches for fault isolation.
If access switches are not deployed, the quorum and HyperMetro replication networks directly connect to different NICs on the core switches for fault isolation.

Using a Management Port as a Quorum Port

Table 9-2 lists the quorum network diagrams when a management port is used as the quorum port.

Table 9-2 Quorum network diagrams (using a management port as the quorum port)

Product	Network Diagram	Description
Dorado 3000 V6		The management ports on all controllers can be used as quorum ports to connect to the quorum server.
Dorado 5000 V6 and Dorado 6000 V6		The management ports on all controllers can be used as quorum ports to connect to the quorum server.
Dorado 8000 V6 and Dorado 18000 V6		Only the management port 0 on each management module can be used as a quorum port to connect to the quorum server.

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Using a Front-end Port as a Quorum Port

Using a Management Port as a Quorum Port

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