https://www.theregister.co.uk/2018/10/29/fujitsu_upgrade_dx8900_array/

Fujitsu has announced the fourth generation of its high-end DX8900 array with 50 per cent more drives, doubled storage capacity, faster caching, a 1.3x performance boost and the addition of compression.

The prior ETERNUS DX8900 S3 was announced in July 2015 and introduced the Extreme Cache option, an SSD cache built into the controller to increase the read rate and VMware VVOL support. The array was a clusterable multi-rack system with from 2 to 24 controllers and back-end disk/SSD connectivity with 4 pair x 4-lane x 12Gbit/s SAS.