During the company's quarterly earnings call, SanDisk said its high-capacity SSDs are delayed to next year. Previously, the company expected to ship models with a capacity of over 4TB sometime this year, but now its 6TB and 8TB SSDs are pushed back to 2016. These disks will be based on MLC NAND flash memory, future disks will feature 3D NAND to drive cost down to levels comparable with enterprise-class HDDs.
6TB and 8TB solid-state drives are currently in development. The only thing presently known about them is that they will be based on Toshiba’s multi-level cell NAND flash memory made using 15nm fabrication technology.
“We are developing our next-generation 15nm NAND flash-based 12Gb/s SAS SSD with higher capacity and performance,” said Mr. Mehrotra. “We expect to introduce that solution to market in 2016 with revenue contribution starting in late 2016.”
While 6TB and 8TB SSDs will continue to use MLC NAND, future hyperscale SSDs from SanDisk will rely on three-dimensional (3D) vertically-stacked BiCS NAND, which is more cost-efficient to produce and which provides higher densities, performance and reliability. 3D NAND will help to drive down per-gigabyte costs of SSDs to levels comparable with enterprise-class HDDs, SanDisk and Toshiba believe.