Hynix has announced SSDs based on 72 layer 3D NAND memory chips. The SSDs are targeted at data centre and enterprise usage, and  come in capacities up to 4TB. The SSDs have 512Gb dies. They come in both SATA and PCIe interface versions. Sequential reads and writes of the SATA drive are 560MB/s and 515MB/s respectively. ...

This story continues at Hynix launches 4TB SSDs made with 72-layer NAND

Or just read more coverage at Electronics Weekly