Hybrid storage is the future. But with the death of disk and living in an all-flash world, how can that be true? While disk isn’t dead yet, it feels like it’s dying. High IOPs, low latency, and consistent performance is what makes flash so desirable. When designing a modern datacenter today, I’d be unlikely to buy spinning disk. So how can hybrid be the future?
As the cost of flash continues to drop the dependency we have on spinning disk drops as well. When it comes to enterprise storage, why pay for a fading technology when flash is becoming more and more affordable? That’s not to say disk doesn’t have a place in the datacenter; it just means the use cases are beginning to diminish. Spinning disk is generally not a place where I want my production applications to run.
NexGen Storage has been in the hybrid array space for some time. After being founded in 2010, being purchased by Fusion-io in 2013 and then eventually being spun out as its own company earlier this year, NexGen Storage has continued to focus on its hybrid arrays. The engineering efforts and customer growth didn’t stop along the way. The NexGen team stayed focused on what it does best; fast storage with predictable performance.
With the rise of flash in the datacenter, why the focus on hyrbid? With NexGen, their hybrid arrays are not just flash cache in front of spinning disk. The approach of flash and RAM caching writes and/or reads makes sense as only your working set “needs” that high speed/low latency tier, but in the event your array was unable to predict the next blocks being requested by your application the performance of spinning disk sometimes isn’t enough. Their latest model, the N5-1500, is all flash with a hybrid approach.
While the cost of flash is dropping rapidly, it still is expensive. NexGen Storage is utilizing flash over the PCIe bus for it’s caching tier which is much more expensive than just regular SSD drives. The advantage of this approach is lower latency, higher throughput, but at a more reasonable cost as you’re not filling an array with all PCIe flash. The N5 all flash series is available in 15TB to 60TB raw capacity (in 15TB increments) with all sizes coming with 2.6TB of PCIe flash.
Why the same cache tier size? With its now patented dynamic QoS, NexGen Storage is able to deliver that consistent performance businesses need for their applications. The ability to prioritize workloads and assign pre-configured QoS policies allows you to purchase a do-everything array. In many of the smaller environments I’ve worked in, you don’t have the luxury of multiple storage arrays for production and dev/test. Often time, you are hoping that your non-critical workloads do not affect your mission-critical workloads. With automated throttling and prioritizing placement of your data, you’re able to ensure development never interferes with Tier 0.
The all-flash datacenter is here today and each all-flash vendor has a different approach. This hybrid all-flash approach is what sets NexGen Storage apart along with an all-inclusive software feature set. A fast array isn’t enough anymore; you need an array that has the intelligence to deliver the performance you’re expecting at all times. Combine that with VMware Virtual Volumes support, data reduction (deduplication and compression) along with array-based snapshots and replication (between all-flash and hybrid spinning disk arrays) and you have a solution built for the next generation.
Disclaimer: During Storage Field Day 8, my expenses (flight, hotel, etc) were paid for by Tech Field Day. I am under no obligation to write about any of the presented content nor am I compensated by any of the presenting companies for such writing.