Flash – Performance at what cost?

Flash is everywhere these days and everyone likes to throw out impressive performance numbers. If someone told you that flash is faster than a hard drive I am sure the thought that pops into your head is, “yeah… thanks for the info”. Nothing shocking about the statement, the real question is what do you do with this resource? Most vendors are using roughly the same NAND with slight variations. How does the implementation take full advantage of the most expensive part of the solution?

One Giant Pool of Flash

Nutanix is a converged distributed storage system made up of many nodes. Each node supplies locally direct attached flash and hard drives. It’s the local virtual storage controller running on each node that takes all of the resources and puts them into one storage pool.

While workloads running on Nutanix write locally for performance, the workloads are not limited to the local flash devices. Nutanix doesn’t create silos within its architecture; it’s controlled orchestration to take advantage of all of the components. The Nutanix Virtual Computing has an awareness of flash capacity on all of the nodes and when reaching capacity on a local device will allow workloads to go over the network to maintain performance. Nutanix customers don’t have to pay a premium for larger flash devices and have peace of mind if the working set spills over the available local flash.


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