What storage options are available, and how much disk space is reserved for system recovery?

The HP ZBook Firefly 14 G7 supports M.2 NVMe PCIe SSD storage ranging from 256 GB up to 2 TB, with options including standard TLC SSDs, Self Encrypting Drive (SED) models, and Intel Optane Memory cache configurations. Up to 35 GB of disk space is reserved for system recovery software on Windows 10 configurations. Intel Optane Memory acceleration does not replace or increase DRAM in the system. (Page 7, 18)