What are the starter configurations of DFMDs in a Gen 2 DirectFlash Shelf?

DirectFlash Shelves (DFS) are populated with DirectFlash Modules (DFMs) or DFMDs (DirectFlash Module with Distributed NVRAM, though usually just DFMs in shelves). For theGen 2 DirectFlash Shelf, Pure Storage offers specific "starter packs" or partially populated configurations to allow for capacity flexibility while maintaining necessary performance and electrical balance.

The validated starter configurations for a Gen 2 DFS are12-slot and 14-slotpopulations. This means the shelf must be populated with at least this number of drives to be a supported configuration. Populating fewer than this (e.g., 8 or 10) might result in insufficient bandwidth utilization across the shelf's internal fabric or fail strict configuration checks in the Purity operating system. Engineers must verify the drive count matches these supported increments during inventory to avoid configuration errors during initialization.

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