text: The Storwize V7000 is designed to handle many paths to the back-end storage. 
  
  In most cases, the Storwize V7000 can improve performance, especially of mid-sized to 
  low-end disk subsystems, older disk subsystems with slow controllers, or uncached disk 
  systems, for the following reasons: 
  
  (cid:2) The Storwize V7000 can stripe across disk arrays, and it can stripe across the entire set of 
  configured physical disk resources. 
  
  (cid:2) The Storwize V7000 control enclosure 2076-524 has 32 GB of cache and 2076-624 has 
  32 GB of cache (upgradeable to 64 GB). 
  
  (cid:2) The Storwize V7000 can provide automated performance optimization of hot spots by 
  using flash drives and Easy Tier. 
  
  The Storwize V7000 large cache and advanced cache management algorithms also allow it 
  to improve the performance of many types of underlying disk technologies. The Storwize 
  V7000 capability to asynchronously manage destaging operations that are incurred by writes 
  while maintaining full data integrity can be important in achieving good database 
  performance. 
  
  Because hits to the cache can occur in the upper (Storwize V7000) and the lower (back-end 
  storage disk controller) level of the overall system, the system as a whole can use the larger 
  amount of cache wherever it is located. Therefore, Storwize V7000 cache also provides more 
  performance benefits for back-end storage systems with extensive cache banks. 