text: **2.5 IBM Storwize V7000 components**
  
  The IBM Storwize V7000 is a modular, midrange virtualization RAID storage subsystem that 
  uses the IBM Spectrum Virtualize software engine. It has the following benefits: 
  
  (cid:2) Brings enterprise technology to midrange storage 
  (cid:2) Specialty administrators are not required 
  (cid:2) Client setup and service are simplified 
  (cid:2) The system can grow incrementally as storage capacity and performance needs change 
  (cid:2) Multiple storage tiers are in a single system with nondisruptive migration between them 
  (cid:2) Simple integration can be done into the server environment 
  
  The IBM Storwize V7000 consists of a set of drive enclosures. Control enclosures contain 
  disk drives and two nodes (an I/O group), which are attached to the SAN fabric or 10-gigabit 
  Ethernet (GbE) fast Ethernet. Expansion enclosures contain drives and are attached to 
  control enclosures. 
  
  The simplest use of the IBM Storwize V7000 is as a traditional RAID subsystem. The internal 
  drives are configured into RAID arrays, and virtual disks are created from those arrays. With 
  IBM Spectrum Virtualize software, this usage is extended by the deployment of distributed 
  RAID arrays, which shrink the reconstruction time of failed drives. 