The History of Data Storage by Larry Freeman

Author:Larry Freeman [Freeman, Larry]
Language: eng
Format: epub
Published: 2017-02-11T08:00:00+00:00

The Many Flavors of Flash in Storage

Some vendors have opted to deploy flash-based PCIe cards and/or SSDs as their own ‘Tier 0’ within an existing storage array cabinet. These storage systems, known as hybrid storage arrays, combine flash devices with management software. Their intended goal? To automatically migrate data between solid state disk and magnetic (hard disk) storage tiers based on performance needs.

Other vendors have designed entire storage systems containing only flash devices with no magnetic storage whatsoever.

To help you gain a broader understanding of the different methods (and applications) for using flash with storage systems, I’ll use my own knowledge of NetApp storage as the backdrop for a few, real-world use case examples.

NetApp has embraced the widespread use of flash technologies in three distinct ways:

Flash as cache in the storage system

SSD as cache in the storage system

SSD as disk in the storage system

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