controller (just one license for all attached enclosures) There are some limitations for each model and each licensed internal code. These can be read on IBMs web pages. Here are examples for V7000, the V5000 series, and IBM SAN Volume Controller. In addition, there are more contributors to a working environment. IBM provides this in an interactive interoperabitlity matrix called IBM System Storage Interoperation Center (SSIC). Supported storage media As of November 2016, available Storwize media sizes include 2.5" flash SSDs with up to 15.36 TB capacity and 3.5" Nearline-HDDs with up to 10 TB capacity, available for Storwize 5000, 7000 and SAN Volume Controller native attach. IBM Storwize Easy Tier will automatically manage and continually optimize data placement in mixed pools of nearline disks / standard disks / read-intensive Flash and enterprise-grade Flash SSDs, including from virtualized devices. Hardware The Storwize family hardware consists of control enclosures and expansion enclosures, connected with wide SAS cables (Four lanes of 6 Gbit/s or 12 Gbit/s). Each enclosure houses 2.5" or 3.5" drives. The control enclosure contains two independent control units (node canisters) based on SAN Volume Controller technology, which are clustered via an internal network. Each enclosure also includes two power supply units (PSUs). Storwize V7000 family Eight available enclosure models: Type 2076-112 = Control enclosure – up to 12 3.5" drives (2010 - 2015) Type 2076-124 = Control enclosure – up to 24 2.5" drives (2010 - 2015) Type 2076-212 = Expansion enclosure – up to 12 3.5" drives (2010 - 2016) Type 2076-224 = Expansion enclosure – up to 24 2.5" drives (2010 - 2016) Type 2076-312 = Control enclosure – up to 12 3.5" drives + 10Gb iSCSI (2012 - 2018) Type 2076-324 = Control enclosure – up to 24 2.5" drives + 10Gb iSCSI (2012 - 2018) Type 2076-524 = Control enclosure – up to 24 2.5" drives + 10Gb iSCSI (known as V7000 Gen 2) (2014 - 2017) Type 2076-624 = Control enclosure – up to 24 2.5" drives + 10Gb iSCSI (known as V7000 Gen 2+) (2016 - current) Type 2076-724 = Control enclosure – up to 24 2.5" drives, NVMe flash drives or NVMe flash core modules + 10Gb iSCSI, 25 Gb iSER (known as V7000 Gen 3) (2018 - current) Storwize V7000 Gen 3 The IBM Storwize V7000 SFF Enclosure Model 724, announced November 6, 2018, supports NVMe and FC-NVMe (NVMe/FC) on 16