text: (cid:2) The following options are available for setting up virtual storage on your VIO servers: 
  
  – Shared Storage Pool (SSP) 
  
  These pools allow a single physical volume on any supported storage controller to be 
  shared across a cluster of Virtual I/O Servers. Those Virtual I/O Servers share 
  accesses to aggregated physical volumes and divide that aggregated volume into 
  storage volumes instead of interacting with external storage controllers or fabric 
  switches. 
  
  A cluster consists of up to 16 Virtual I/O Servers with a shared storage pool that 
  provides distributed storage access to the Virtual I/O Servers in the cluster. Each 
  cluster requires one physical volume for the repository physical volume and at least 
  one physical volume for the storage pool physical volume. The shared storage pool can 
  be accessed by all the Virtual I/O Servers in the cluster. All the Virtual I/O Servers 
  within a cluster must have access to all the physical volumes in a shared storage pool. 
  
  – Virtual SCSI (vSCSI) adapters 
  
  These adapters provide one logical partition with the ability to use storage I/O (disk, 
  CD, and tape) that is owned by the Virtual I/O Server partition. Virtual SCSI is based on 
  a client and server relationship; the Virtual I/O Server owns the physical resources and 
  has one Virtual SCSI server adapter that communicates with a logical partition Virtual 
  SCSI client adapter. 