Storage Virtualisation

Storage virtualisation is the pooling of physical storage from multiple network storage devices into what appears to be a single storage device that is managed from a central console.  Storage virtualisation is commonly used in a storage area network (SAN)


Virtualised environments can stretch traditional storage to the breaking point in the areas of performance, availability, efficiency and manageability.  Addressing these requirements is key to achieving the full business benefits from virtualisation.


Problems associated with traditional physical storage (non-virtualised) include:


  • Managing multiple islands of storage
  • Uneven utilisation – data is unevenly spread across separate disk systems
  • Complex backup procedures
  • Management complexities and inefficiencies  –  requiring more administration
  • Expensive continuity – any storage high availability solution needs to be repeated for each separate storage system
  • The requirement for more physical space, power and cooling
  • A need to commit to the amount of physical storage at acquisition


A SAN environment offers a number of benefits:


  • A single storage island that maximises utilisation
  • Simple backup
  • Reduced complexities requiring less administration
  • Affordable continuity
  • Optimised efficiencies
  • Reduced space, power and cooling requirements
  • A ‘pay as you grow’ storage solution


Vendors and Products

  • HP
  • NetApp