text: **Input/output group**
  A collection of volumes and canister relationships that present a common interface to host 
  systems. Each pair of canister is known as an I/O group. 
  
  **I/O throttling rate**
  The maximum rate at which an I/O transaction is accepted for a volume. 
  
  **iSCSI initiator**
  An initiator functions as an iSCSI client. An initiator typically serves the same purpose to a 
  computer as a SCSI bus adapter would, except that, instead of physically cabling SCSI 
  devices (such as hard disk drives and tape changers), an iSCSI initiator sends SCSI 
  commands over an IP network. 
  
  **iSCSI session**
  The interaction (conversation) between an iSCSI Initiator and an iSCSI Target. 
  
  **iSCSI target**
  An iSCSI target is a storage resource on an iSCSI server. 
  
  **Latency**
  The time interval between the initiation of a send operation by a source task and the 
  completion of the matching receive operation by the target task. More generally, latency is the 
  time between a task initiating data transfer and the time that transfer is recognized as 
  complete at the data destination. 
  
  **Least recently used**
  Least recently used (LRU) pertains to an algorithm used to identify and make available the 
  cache space that contains the data that was least recently used. 