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It is recommended that a front-end server access an OceanStor 9000 through the domain name of the OceanStor 9000. IP address mounting is not recommended.
Typically, one node externally presents two dynamic IP addresses and two static IP addresses. You can mount a dynamic IP address of a node so that if the node fails, the mounted IP address will be automatically floated to another node.
The following table describes the OceanStor 9000's requirements for the IP addresses of the front-end network.
Item | Quantity | Details |
Front-end service networks | Node quantity x 4 + 1 | Assign two IP addresses to each node. The two IP addresses act as static front-end IP addresses of the node. Assign n (n = Number of nodes x 2) dynamic front-end IP addresses to the IP address pool of InfoEqualizer. Allocate one InfoEqualizer DNS IP address. |
InfoEqualizer is a load balancing feature used to manage connections between clients and the OceanStor 9000. The feature provides the following functions to improve availability, performance, and reliability of the OceanStor 9000: A client can use a domain name to access the OceanStor 9000, simplifying the client connection process. When a client attempts to access the OceanStor 9000, InfoEqualizer implements load balancing to enable the client request to be sent to a relatively idle node, improving client access efficiency. When a node becomes faulty, InfoEqualizer implements failover to evenly distribute the services that run on the faulty node to other nodes, improving system reliability.
InfoEqualizer root domain names including the following two types:
l Dynamic domain name
A dynamic domain name returns a dynamic external IP address of a node to a client, supports failover, and is used for NFS sharing.
l Static domain name
A static domain name returns a static external IP address of a node to a client and is used for CIFS sharing.
The difference between a dynamic external IP address and a static external IP address is as follows:
l Dynamic external IP address
After a node fails, a dynamic IP address can be automatically assigned to another functional node, and a client can still access the OceanStor 9000 through the dynamic IP address.
l Static external IP address
After a node fails, a client cannot access the OceanStor 9000 through a static IP address.
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