DELL EMC Glossary

PCIe Flash Storage

PCIe or Peripheral Component Interconnect Express is a serial bus standard for connecting a computer to one or several peripheral devices. Commonly found on industry-standard server platforms, PCIe Flash Storage leverages this standard to provide flash drive-accelerated read and write access to the server CPU, resulting in access measured in tens of microseconds.

Who uses PCIe Flash Storage, and why?

Most standard server vendors today offer PCIe technology as a core part of their server feature sets. With the declining price of flash technology, and the unassailable performance and latency advantages flash storage offers versus traditional spinning disks, customers of all sizes are adopting flash storage to accelerate access to and from their business applications.

How PCIe Flash Storage works

Flash is a storage technology, whereas PCIe is a connection standard. PCIe Flash Storage uses expansion slots in industry standard servers to connect directly to the server’s motherboard. PCIe also connects to the server via its own serial link. This point-to-point design reduces latency and increases data transfer rates between a server and a storage array.

Benefits of PCIE Flash Storage

PCIe Flash Storage provides orders of magnitude greater performance versus traditional spinning disks. Unlike HDDs, flash solid-state drives also have no moving parts, which provides a more predictable life cycle for the drive. Drive densities for flash drives have also been increasing much faster than those of HDDs and should shortly surpass them. Greater density is important as it translates into the need for fewer servers, smaller footprints, lower power and lower cooling.