Hybrid array

A hybrid array is a form of hierarchical storage management that combines hard disk drives (HDDs) with solid-state drives (SSDs) for I/O speed improvements.

Hybrid storage arrays aim to mitigate the ever increasing price-performance gap between HDDs and DRAM by adding a non-volatile flash level to the memory hierarchy.[1] Hybrid arrays thus aim to lower the cost per I/O, compared to using only SSDs for storage. Hybrid architectures can be as simple as involving a single SSD cache for desktop or laptop computers, or can be more complex as configurations for data centers and cloud computing.


Some commercial products for building hybrid arrays include:

See alsoEdit


  1. ^ Rino Micheloni; Alessia Marelli; Kam Eshghi (2012). Inside Solid State Drives (SSDs). Springer. p. 62. ISBN 978-94-007-5145-3.
  2. ^ Charlie Demerjian (September 9, 2009). "Adaptec's MaxIQ caches RAIDs with SSDs". SemiAccurate. Retrieved October 10, 2016.
  3. ^ Larry Dignan (February 5, 2012). "EMC unveils VFCache, targets Fusion-io". Between the Lines. ZDNet. Retrieved October 10, 2016.
  4. ^ Chris Mellor (March 5, 2013). "One day later: EMC declares war on all-flash array, server flash card rivals: Rolls out XtremIO array, renamed VFCache". The Register. Retrieved October 10, 2016.
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  8. ^ The SSD Guy (2013-08-20). "IBM Adds Server-Side Caching". The SSD Guy. Retrieved 2013-12-23.
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  11. ^ "NetApp: Flash as a STORAGE tier? You must be joking". theregister.co.uk. Retrieved 2015-03-26.
  12. ^ Chris Mellor (September 30, 2014). "Oracle crashes all-flash bash: Behold, our hybrid FS1 arrays: Mutant flash/disk box a pillar of storage: It's axiomatic". The Register. Retrieved October 10, 2016.
  13. ^ Les Tokar (December 4, 2011). "NVELO Dataplex SSD Caching Software Review - Seven mSATA SSDs Prove An Amazing Concept". The SSD Review. Retrieved October 10, 2016.
  14. ^ Kristian Vättö (December 16, 2012). "Samsung Acquires SSD Caching Company NVELO". AnandTech. Retrieved October 10, 2016.
  15. ^ Ian Barker (2014-01-27). "AMI StorTrends 3500i offers high performance storage for smaller enterprises". BetaNews. Retrieved 2014-10-17.
  16. ^ "Mutant array upstarts feast on EMC, NetApp's leavings". The Register. Retrieved 2015-03-26.
  17. ^ "Oracle's Flash-Friendly Sun ZFS Storage Is Ready for New SPARCs". enterprisestorageforum.com. 3 April 2013. Retrieved 2015-03-26.