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What's the difference between all flash and hybrid flash?


Asked by Travis Prince on Dec 03, 2021 FAQ



By comparison, a typical high-end hybrid flash system can take close to 100U of rack space to accommodate a petabyte of usable data without dedupe and compression and generates ~19-20 kWh of power per month. All flash is based on SSDs/NAND with no moving parts: the systems use flash memory to quickly read/write and perform I/O operations.
Indeed,
The difference between a hybrid flash array and an all-flash array is that hybrid storage arrays have some HDDs, whereas all-flash arrays have none. A hybrid storage array can feature a lot of flash, or just a little.
In respect to this, Hybrid enables companies to take advantage of flash’s high performance levels, while benefiting from the predictability of HDD. Organizations that have storage infrastructures relying solely on HDDs find that adding some flash storage for certain applications makes economic sense.
Likewise,
Traditional HDDs can typically store the largest amounts of data. But that has a downside: It makes storage array performance drop drastically. By mixing the speed of flash with the capacity of HDDs, the hybrid approach offers a balanced infrastructure between performance and capacity.
Furthermore,
All-flash storage is also referred to as a Solid-State Array (SSA). AFAs and SSAs offer speed, performance, and agility for your business applications. Where Do All-Flash Arrays Fit Into the World of Data Storage?