PRIMECLUSTER Global Disk Services Configuration and Administration Guide 4.1 (Linux)

A.1.7 Exception to Proxy Configuration

Although a pair of volumes or a pair of groups can be related as the master and the proxy, there are the following exceptions:

• Objects that belong to different classes cannot be related as the master and the proxy.
• Objects that belong to the same group cannot be related as the master and the proxy.
• Stripe type objects cannot be related as the master and the proxy. However, a mirror group to which a lower level stripe group is connected, or a mirror volume within that mirror group, can be related as the master and the proxy. For example, to stripe a master volume, connect a stripe group to a mirror group and create the master volume in the mirror group.
• Concatenation type objects cannot be related as the master and the proxy. However, a mirror group to which a lower level concatenation group is connected, or a mirror volume within that mirror group, can be related as the master and the proxy. For example, to concatenate disks to create a large-sized master group, connect a concatenation group to a mirror group and create the mirror group the master group.
• For a proxy that is already related to a master, another proxy cannot be related.
• A master to which a proxy is already related cannot be related as a proxy to another master.
• Shadow class objects cannot be related as the master and the proxy.