What upgrade scenario required an upgrade of power supplies?

The upgrade from a FlashArray//X10 (or X20) to a FlashArray//X50 requires a mandatory power supply unit (PSU) upgrade .

While the FlashArray//X series utilizes a shared chassis design (3U) for models X10 through X90, the power requirements differ significantly between the entry-level and performance-tier controllers.

X10/X20: These models typically ship with 1000W or 1200W power supplies, which are sufficient for their lower-power CPUs and component loads.

X50/X70/X90: These "Performance" class arrays utilize higher-wattage Intel Xeon processors and often support denser NVMe configurations, necessitating 1600W power supplies to ensure stability and N+1 redundancy.

When a customer performs a Data-in-Place upgrade (swapping controllers) from an X10 to an X50, the existing chassis is retained, but the lower-capacity PSUs must be physically swapped for the high-capacity 1600W units to support the new X50 controllers. Conversely, upgrades like X50 > X70 (Option B) or R2 > R3 (Option C) typically occur within the same power tier, utilizing the existing 1600W PSUs.