Hybrid Flash Storage for Enterprise Workloads: How to Balance Performance, Capacity, and Cost
TrueNAS, Thursday, October 15th, 2026
TrueNAS explains how to size hybrid SSD/HDD storage as flash prices rise, and when all-flash is still the better choice.
TrueNAS says hybrid flash storage combines SSDs and HDDs so flash serves active data while lower-cost disk holds the rest, and with flash prices up more than 300% and a raw cost gap of about 20X versus HDD, hybrid is the design to price against all-flash.
The guide frames the decision around four questions: how much data is active, how reads and writes behave, what happens to latency on a flash miss, and how much capacity is needed.
It shows how OpenZFS-based TrueNAS uses flash and disk and when all-flash is truly the better call.