From Wikipedia, the free encyclopedia
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:
Adaptec demonstrated the MaxIQ series in 2009.
[2]
Apple's
Fusion Drive
Linux software includes
bcache ,
dm-cache , and
Flashcache (and its fork
EnhanceIO ).
Condusive's
ExpressCache is marketed for laptops.
EMC Corporation VFcache was announced in 2012.
[3]
[4]
Fusion-io acquired ioTurbine in 2011,
[5] and the product line it acquired by buying NexGen in 2013.
[6]
Hitachi Accelerated Flash Storage (HAFS) used together with the Hitachi Dynamic Tiering software
[7]
IBM Flash Cache Storage Accelerator (FCSA) server software
[8]
Intel's
Smart Response Technology for desktop
Intel's
Cache Acceleration Software for servers and workstations
LSI CacheCade software for their controllers
[9]
Marvell 's HyperDuo controllers
[10]
Microsoft's
Automated Tiering (since Windows 2012 R2)
NetApp 's Flash Cache, Flash Pool, Flash Accel
[11]
Oracle Corporation markets products such as
Exadata Smart Cache Flash, and the FS1 flash storage system.
[12]
Microsoft
ReadyBoost allows personal computers to
USB flash drives as cache.
Nvelo DataPlex SSD caching software was announced in 2011,
[13] and was acquired by
Samsung in 2012.
[14]
SanDisk FlashSoft for Windows, Linux, and
vSphere
[5]
Products are offered by vendors like AMI
StorTrends ,
[15]
Tegile Systems ,
Reduxio , and
Tintri .
[16]
ZFS using hybrid storage pools, are used for example in some Oracle Corporation products.
[17]
^ Rino Micheloni; Alessia Marelli; Kam Eshghi (2012).
Inside Solid State Drives (SSDs) . Springer. p. 62.
ISBN
978-94-007-5145-3 .
^ Charlie Demerjian (September 9, 2009).
"Adaptec's MaxIQ caches RAIDs with SSDs" . SemiAccurate. Retrieved October 10, 2016 .
^ Larry Dignan (February 5, 2012).
"EMC unveils VFCache, targets Fusion-io" . Between the Lines . ZDNet. Archived from
the original on February 6, 2012. Retrieved October 10, 2016 .
^ 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 .
^
a
b
"Fusion-io spins up ioTurbine, enhances server flash caching" . The Register . Retrieved October 10, 2016 .
^
"Fusion-io buys NexGen" . theregister.co.uk . Retrieved 2015-03-26 .
^
"Big storage turns the tide in the hybrid flash array market" ,
Computer Weekly , September 2013, retrieved 2015-03-26
^ The SSD Guy (2013-08-20).
"IBM Adds Server-Side Caching" . The SSD Guy. Retrieved 2013-12-23 .
^
"LSI MegaRAID CacheCade Pro 2.0 Review" . storagereview.com . Archived from
the original on 2015-04-02. Retrieved 2015-03-26 .
^
"Hands-on with the Marvell HyperDuo hybrid storage controller" . CNET . CBS Interactive. Retrieved 2015-03-26 .
^
"NetApp: Flash as a STORAGE tier? You must be joking" . theregister.co.uk . Retrieved 2015-03-26 .
^ 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 .
^ 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 .
^ Kristian Vättö (December 16, 2012).
"Samsung Acquires SSD Caching Company NVELO" . AnandTech. Retrieved October 10, 2016 .
^ Ian Barker (2014-01-27).
"AMI StorTrends 3500i offers high performance storage for smaller enterprises" . BetaNews. Retrieved 2014-10-17 .
^
"Mutant array upstarts feast on EMC, NetApp's leavings" . The Register . Retrieved 2015-03-26 .
^
"Oracle's Flash-Friendly Sun ZFS Storage Is Ready for New SPARCs" . enterprisestorageforum.com . 3 April 2013. Retrieved 2015-03-26 .