Caching inside the storage system

• Some systems go with the direction of placing the cache inside the storage system.
• The advantages:
  • easier management (the single management system notion).
  • Ease of provisioning the cache to different servers.
• The disadvantages:
  • high latency overhead of the RAID system on top of the SSD.
  • Requires a completely revamped new SSD part in the RAID system, to avoid killing the performance gain of SSDs.

Originally written by guy keren