850 Pro

Samsung introduces the first 3D-Nand or V-Nand Flash SSD'swith their new 850 PRO SSD range. The 840 PRO continued to be a popular choice wtih our clients even though it was released more than two years ago now. Keen to keep ahead of the curve, Samsung has just launched the 850 PRO as direct replacement for the 840 PRO.

The big change in the 850 PRO is its use of a new type of NAND. Typically, the focus of lowering the cost of NAND and thus SSDs has been scaling down through process and die shrinks. This process carries with it issues to do with performance and endurance that manufacturers have had to deal with in their own ways. However, as we move beyond the 20nm class toward the 10nm class and below, this is becoming all the more difficult, as the space between individual cells shrinks to the point where electron interference and thus data errors and failures are more likely and also harder and more expensive to combat, which begins to negate the associated cost savings of a die shrink.


850 Pro

The Samsung 850 Pro packs 32 layers of NAND into each flash chip and there are eight NAND dies total in the 850 Pro, implying that Samsung has significantly improved chip density since the first 24-layer NAND dies were announced. The drive is certified for 150TB of writes — far more than most consumer drives — though obviously no one has had time to throw petabytes of write performance at it to check its durability. The drive is also built on 40nm chips rather than 20nm – but using an older process on 3D NAND isn’t a major issue and allows the drive to benefit from some of the advantages of a larger process.
Here is what Samsung had to say:

"Samsung Electronics Co., Ltd., the world leader in advanced memory technology, today launched the 850 PRO, a new solid state drive (SSD) line-up featuring Samsung’s cutting-edge three-dimensional (3D) vertical NAND (V-NAND) flash memory technology. The new Samsung 850 PRO, unveiled at the 2014 Samsung SSD Global Summit in Seoul, offers a new breed of performance for solid state drives and will be available globally across 53 markets from this month.

Based on Samsung’s proprietary V-NAND technology, the new 850 PRO is ideal for use in high-end PCs and workstations. Samsung’s V-NAND features a proprietary vertical cell structure and represents a breakthrough in overcoming the density limit currently facing planar NAND architecture used in conventional flash memory, yielding significant speed, endurance and energy efficiency improvements."

Overall performance is reportedly excellent, even without Samsung’s drive acceleratortechnology (now rebranded as Rapid). Samsung, if you recall, acquired cache accelerator company Nvelo last year — the fruits of that acquisition are now paying off for the company. Rapid accelerates a number of common workloads and has matured since Samsung shipped it last year as part of its Drive Magician performance tuning utility.

Right now, the 850 Pro commands a substantial premium over other drives (about twice the cost per gigabyte), but between the excellent Samsung 840 EVO and this new drive, Samsung appears to have the SSD market buttoned up. The commercial success of the company’s V-NAND is important to the long-term future of flash storage — 3D dies are generally considered to be essential to the long-term goal of improving SSD density and performance.

Interested in pricing for the Samsung 850 PRO? get in contact with us here