text: For example, for disk and I/O capacity, each retrieve requires that the data is obtained from 
  the archive (Tivoli Storage Manager, OAM, ASM, and cache). This data is on a disk or 
  another storage device. The storage device retrieval rate is part of the total response time that 
  is observed at the client, and both of them are affected by the following resources and system 
  demand: 
  
  (cid:2) Real memory: The data that is retrieved from disk must be stored in memory for it to be 
  
  processed. Virtual memory allows large amounts of data to be swapped in and out of real 
  memory, but it does not remove the need for real memory. 
  
  (cid:2) Processing: Any data transformations that are performed on the Content Manager 
  
  OnDemand server require available processing capability. If the capability is not available, 
  the server waits until it becomes available. This wait lengthens the total response time of 
  the client request. 
  
  (cid:2) Concurrent retrievals: Each retrieval requires resources on the server. The higher the 
  
  number of concurrent retrievals, the greater the amount of resources that are needed to 
  complete the work in an acceptable amount of time. 
  
  (cid:2) Network bandwidth: The retrieved data is sent to the clients over the Internet Protocol 
  network. If the network bandwidth is not wide enough to satisfy all of the concurrent 
  requests, the response time to the clients is slower and data is queued up in the server 
  buffers, further slowing down the system. 