Monday, 02 October 2017 16:02

Qnap claims 'industry-leading' SSD cache technology


NAS vendor Qnap says its SSD cache technology provides the best return on investment for enterprises and less demanding users.

Using SSDs or other types of flash memory to accelerate rotating disk storage has become a widely used technique.

Apple introduced its Fusion Drive technology on Macs almost five years ago, and at the other extreme enterprise storage vendors such as Dell EMC, Hitachi Vantara and Oracle provide the option of boosting hard disk performance through the addition of some flash storage.

In the NAS market, Qnap claims its approach to SSD caching has two particular advantages over those taken by competing vendors.

Firstly, Qnap's design provides a single SSD cache across all the volumes or iSCSI LUNs on the NAS, where others may require a separate cache for each volume or LUN. The Qnap approach reduces the cost (fewer SSDs are required) and leaves more drive bays free for usable storage.

Secondly, it allows on-the-fly reconfiguration – caching can be enabled or disabled without interrupting services, and this also applies to hot-plugging a replacement SSD whether it is being used for read-only or read/write caching. Benefits include improved availability as well as greater productivity for IT personnel.

SSD caching can deliver up to 10 times more IOPS while reducing latency by a third, according to Qnap.


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Stephen Withers

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Stephen Withers is one of Australia¹s most experienced IT journalists, having begun his career in the days of 8-bit 'microcomputers'. He covers the gamut from gadgets to enterprise systems. In previous lives he has been an academic, a systems programmer, an IT support manager, and an online services manager. Stephen holds an honours degree in Management Sciences and a PhD in Industrial and Business Studies.



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