text: **Oversubscription**
  Oversubscription refers to the ratio of the sum of the traffic on the initiator N-port connections 
  to the traffic on the most heavily loaded ISLs, where more than one connection is used 
  between these switches. Oversubscription assumes a symmetrical network, and a specific 
  workload that is applied equally from all initiators and sent equally to all targets. A 
  symmetrical network means that all the initiators are connected at the same level, and all the 
  controllers are connected at the same level. 
  
  **Over provisioned**
  See “Capacity” on page 771. 
  
  **Over provisioned ratio**
  See “Capacity” on page 771. 
  
  **Parent pool**
  Parent pools receive their capacity from MDisks. All MDisks in a pool are split into extents of 
  the same size. Volumes are created from the extents that are available in the pool. You can 
  add MDisks to a pool at any time either to increase the number of extents that are available 
  for new volume copies or to expand existing volume copies. The system automatically 
  balances volume extents between the MDisks to provide the best performance to the 
  volumes. 
  
  **Partnership**
  In Metro Mirror or Global Mirror operations, the relationship between two clustered systems. 
  In a clustered-system partnership, one system is defined as the local system and the other 
  system as the remote system. 