 IBM FlashSystem A9000 is a 8U rackmount unit with up to 300TB of usable storage capacity provided by FlashSystem 900 modules, managed by IBM Spectrum Accelerate software.It's scalable sibling, the FlashSystem A9000R, consists of a minimum of two units, scaling to 6 units or 1.8 PB usable in a 42U rack.A9000R units share CPU, cache and access paths with their neighbours, leveraging a zero-tuning data distribution design.