Flash storage has quickly taken off, thanks to its ability to use less capacity with greater speed. Flash boosts performance and enables companies to reap benefits like reduced power consumption and consolidated apps per machine.\nInitially quite expensive, flash storage had been used reservedly, such as for subsets of application data. Although improvements and efficiencies in the technology have resulted in lower prices, there are still cases where using hard disk drives (HDDs) is either more efficient or more economical. And this is why we\u2019re now seeing the emergence of hybrid flash storage solutions.\nLet\u2019s take a look at the options.\nAll-flash arrays\nData on all-flash arrays is stored on solid state disks (SSDs) instead of HDDs. They use flash media only for persistent or non-volatile storage \u2014 data that would be unaffected by power shut-off.\nWith all-flash, speed is the name of the game. Based on SSDs with no moving parts, they use flash memory to quickly write and perform I\/O operations. The performance benefit alone makes it worth running mission-critical apps on all-flash \u2014 where speeding the time to get data in hand can make a bottom-line difference.\nBut performance isn\u2019t the only advantage. There are cost savings, too. All-flash arrays are typically smaller and take up less space on the storage rack. Also, because flash runs on SSDs, it uses less power because there are no moving parts \u2014 and less cooling due to fewer components producing heat.\n\nWhile critics say all-flash arrays are expensive, IDC suggests decision makers look at the full picture. \u201cWhen all-flash arrays are deployed as general-purpose storage platforms for primary applications, the total cost of ownership advantage flash brings to the table relative to hard disk drive\u2013based systems is overwhelming,\u201d said Eric Burgener, IDC research director for storage. \u201cBecause they may not fully understand the business-level impacts of flash deployment at scale, many C-level personnel erroneously still view flash as an expensive enterprise storage alternative.\u201d\n\nHybrid flash arrays\nLike the name suggests, hybrid flash arrays mix SSDs and HDDs. Hybrid enables companies to take advantage of flash\u2019s high performance levels, while benefiting from the predictability of HDD.\nOrganizations that have storage infrastructures relying solely on HDDs find that adding some flash storage for certain applications makes economic sense. It enables them to slowly transition existing legacy equipment, achieving improved performance levels while not biting off the entire cost of going all-flash all at once.\nAnother advantage is the ability to gain adaptability and efficiency. Traditional HDDs typically can store the largest amounts of data. But that has a downside: it makes them slow. By mixing the speed of flash with the capacity of HDDs, the hybrid approach offers a balanced infrastructure.\nThe next generation\nHPE Nimble Storage platform offers all-flash and adaptive (or hybrid) flash arrays. Both options offer performance improvements and cost efficiencies \u2014 regardless of your existing storage architecture.\nBoth arrays provide greater capacity and speeds than previous models, plus six-nines guaranteed availability, and cloud-ready capabilities, as well as timeless storage and satisfaction guarantees.\nRead more about the fast, simple, cloud-ready arrays here.