![]() ![]() NVMe, where storage connects to the host CPU over the PCIe bus, is now established as the “gold standard” for high-performance data storage. You will want top-of-the-line NVMe or NVMe-over-Fabrics, but there are lots of applications that are happy to run on spinning disks, or on hybrid storage with flash and flash cache.” Interface options “But you have to be willing to pay for performance. ![]() “If speed is essential, don’t use spinning disks,” says Tony Lock, analyst at Freeform Dynamics. RAID and erasure coding technology ensures that HDDs are also robust. For now, flash media cannot compete on capacity alone.Īnd careful deployment of storage arrays, especially in SAN and NAS environments, can narrow the speed gap to a point where it is largely irrelevant to enterprise applications. Popular manufacturers such as Dell and Lenovo use flash in almost all their enterprise laptops.īut the economics and even the performance advantages are less clear cut when it comes to enterprise storage subsystems.įlash memory suppliers have driven down costs and bolstered capacity, but so have hard drive makers. Costs of solid-state storage have fallen to the point where there is little difference between hardware with an SSD or an HDD, especially for endpoint devices. IT departments have more choice than ever. This includes NVMe flash, which connects to the host CPU over the PCI Express bus and provides higher read-write speeds with lower power consumption than SATA – or SAS-connected SSDs.Īnd the ability to use NVMe as networked storage – NVMe-over-Fabrics – has moved flash beyond single server and direct-attached deployments.Īll this might suggest that “legacy” storage formats such as hard disk drives and tape have had their time, but this is far from the case. Meanwhile, newer flash implementations have helped boost SSD use. Gartner, for example, expects prices to fall between 10% and 15% this year. And flash memory drives have fallen in price and grown in capacity. It is true that flash storage offers dramatic performance improvements over conventional hard disk drives. Over the last few years, much of the enterprise storage market has focused on flash technology, but the hard disk drive (HDD) format has plenty of life in it yet.
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