Product : Nutanix, ECP [HCI]/5.19, Ultimate
Feature : Storage Config, Components, Server Support
Content Owner:  Herman Rutten
Flexible: capacity (up to 7 options per disk type); number of disks (Dell, Cisco)
Fixed: Number of disks (hybrid, most all-flash)
Some All-Flash models offer 2 or 3 options for the number of SSDs to be installed in each appliance.

AOS supports the replacement of existing drives by larger drives when they become available. Nutanix facilitates these upgrades.