When to use resource groups
A storage system can connect to multiple hosts and be shared by multiple divisions in a company or by multiple companies. Many storage administrators from different organizations can access the storage system. Managing the entire storage system can become complex and difficult. Potential problems are that private data might be accessed by other users, or a volume in one organization might be accidentally destroyed by a storage administrator in another organization.
To avoid such problems, use Resource Partition Manager to set up resource groups that allow you to manage one storage system as multiple virtual private storage systems. The storage administrator in each resource group can access only their assigned resources. Resource groups prevent the risk of data leakage or data destruction by another storage administrator in another resource group.
Resources such as LDEVs, parity groups, iSCSI targets, external volumes, ports, and host groups can be assigned to a resource group. These resources can be combined to flexibly compose a virtual private storage system. You should plan and create resource groups before creating volumes.