Citrix Systems server 4 Manual Do Utilizador

Separate Storage Network

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• The Management Server cluster (including front-end load balancers, Management Server nodes,

and the MySQL database) is connected to the management network through a pair of load
balancers.

• Secondary storage servers are connected to the management network.

• Each pod contains storage and computing servers. Each storage and computing server should have

redundant NICs connected to separate layer-2 access switches.

In the large-scale redundant setup described in the previous section, storage traffic can overload the
management network. A separate storage network is optional for deployments. Storage protocols such
as iSCSI are sensitive to network delays. A separate storage network ensures guest network traffic
contention does not impact storage performance.

The CloudPlatform Management Server is deployed on one or more front-end servers connected to
a single MySQL database. Optionally a pair of hardware load balancers distributes requests from the
web. A backup management server set may be deployed using MySQL replication at a remote site to
add DR capabilities.

The administrator must decide the following.

• Whether or not load balancers will be used.

• How many Management Servers will be deployed.

• Whether MySQL replication will be deployed to enable disaster recovery.

The CloudPlatform platform scales well into multiple sites through the use of zones.

There are two ways to configure the storage network:

• Bonded NIC and redundant switches can be deployed for NFS. In NFS deployments, redundant

switches and bonded NICs still result in one network (one CIDR block+ default gateway address).

• iSCSI can take advantage of two separate storage networks (two CIDR blocks each with its own

default gateway). Multipath iSCSI client can failover and load balance between separate storage
networks.