About Cluster Path
Cluster Path (CP) mirrors, comprised of virtual volumes, provide seamless measures that ensure data availability and drastically reduce data downtime. CP mirrors are designed to work in conjunction with cluster-aware application servers to allow continued access in the event of any one component failing in the paths between application servers and storage servers. CP is used when SANsymphony software is mapping virtual volumes to application servers with cluster management software, such as HACMP. Cluster Path software is installed on application servers. Virtual volumes are created in the standard manner reflected in this Help, but you must specify the mirror path type of your virtual volumes as Cluster Path (CP).
All cluster servers must share (access) at least one SCSI or Fibre Channel disk. With CP, a single virtual volume may be mapped to many cluster servers. However, it is important to note that each application server will access the virtual volume via separate, redundant paths.
There may be some special configuration necessary for your application server depending on your specific operating system. It is very important to refer to our Technical Support Web site for detailed FAQs about instructions pertaining to your specific operating system and your high availability products.
When using CP, you must map to two or more application servers.
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Here is an illustration of CP: |
Here is an illustration of CP with multipathing: |
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