FlashBlade is a 4U appliance, which scales from 7 blades and up to 5 chassis for a total of 75 blades. All software is included, and no further tuning is required. Each blade has a capacity ranging from 8 to 52 TB, and can be mixed as needed. FlashBlade is also covered by the Evergreen Storage Subscription, where smaller blades can be swapped out as the demand for capacity increases.