Samsung's 256Gbit, 3D NAND chips. Samsung began mass producing the industry’s first 256Gbit 3D Vertical NAND (V-NAND) flash memory chip based on 48 layers of 3-bit multi-level-cell (MLC) arrays last year.
Samsung's 256Gbit, 3D NAND chips. Samsung began mass producing the industry’s first 256Gbit 3D Vertical NAND (V-NAND) flash memory chip based on 48 layers of 3-bit multi-level-cell (MLC) arrays last year.

Samsung Electronics announced Wednesday that it is now sailing the industry’s highest-capacity solid-state drive (SSD), the 15.36TB PM1633a. Samsung confesses it was running on the drive last August, saying it would use the like form factor as for a laptop computer: 2.5-in, but the drive is 15mm in height. Laptop SSDs are typically 9mm, 7mm or 5mm in height (for ultrathin notebooks).

The 2.5-in SSD is based on a 12Gbps Serial Attached SCSI (SAS) interface for use in activity storage systems. The PM1633a has on fire fast performance, with random read and write rapidly of up to 200,000 and 32,000 I/Os per second (IOPS), respectively. It delivers consequent read and write speeds of up to 1200MBps, the association said. A typical SATA SSD can peak at about 550MBps.

Because the PM1633a comes in a 2.5-in. form factor, IT managers can fit double as many of the drives in a standard 19-in. 2U (3.5-in.) rack, related to an equivalent 3.5-in. storage drive. The SSD also sets a new bar for sustainability, Samsung said.

The 15.36TB PM1633a drive stays one full drive write per day, which means 15.36TB of data can be recorded every day on a single drive without lack of success over its five-year warranty.The SSD can write from two to 10 times as much data as common SATA SSDs based on planar MLC and TLC NAND flash technologies.

Samsung said it is betting on the PM1633a SSD line-up to “rapidly become” the amazing favorite over hard disks for activity storage systems.

“To satisfy an increasing market want for ultra-high-capacity SAS SSDs from famous enterprise storage system composition, we control our best efforts toward conflict our customers’ SSD requests,” Jung-bae Lee, senior vice leader of Samsung Electronic’s Application Engineering Team, said in a statement. The consumption of the PM1633a SSD is based on four factors: the 3D NAND (vertical NAND or V-NAND) chips; 16GB of DRAM; Samsung’s antidote controller chip; and the 12Gbps SAS interface.

The random read IOPS performance is about 1,000 times that of SAS-type hard disk ride and the sequential read and writes speeds are more than double the speed of a typical SATA SSD, the company said.

Combining 512 of Samsung’s 256Gbit V-NAND memory chips set up the SSD’s unprecedented 15.36TB of data storage quantity in a single drive. V-NAND, or 3D NAND, is a way of mountain NAND cells one atop addition like a microscopic skyscraper. Not only does it double the thickness of standard planar NAND chips, from 128Gbits to 256Gbits, it also speed up performance.

Samsung's 256Gbit, 3D NAND chips. Samsung began mass producing the industry’s first 256Gbit 3D Vertical NAND (V-NAND) flash memory chip based on 48 layers of 3-bit multi-level-cell (MLC) arrays last year.
Samsung’s 256Gbit, 3D NAND chips. Samsung began mass producing the industry’s first 256Gbit 3D Vertical NAND (V-NAND) flash memory chip based on 48 layers of a 3-bit multi-level cell (MLC) arrays last year.

Samsung originally announced the 48-layer V-NAND last August, saying it also athletics 3-bits per cell or multi-level cell (MLC) NAND technology.

In the V-NAND chip, each cell applies the same 3D Charge Trap Flash (CTF) structure in which the cell supply are stacked aslant to form a 48-storied mass that is electrically connected through 1.8 billion channel holes vertically punching through the arrays by using an exclusive etching technology. In total, each chip encloses more than  85.3 billion cells. They each can store 3 bits of data, appear in 256 billion bits of data — in other words, 256Gb on a slice that’s larger than the tip of a thumb.

The 256Gb dies are stacked in 16 layers to form a single 512GB package, with a total of 32 NAND flash packages in the 15.36TB drive. Handling Samsung’s third-generation, 256-gigabit (Gb) V-NAND technology, which stacks cell-arrays in 48 layers, the PM1633a line-up is conventional to be faster and better than its predecessor, the PM1633. That model used Samsung’s second-generation, 32-layer, 128Gb V-NAND memory.

In 2014, Samsung became the first company to declare a 3D NAND flash chip with a 3-bit MLC architecture. In October 2014, the company released it was mass producing a 32-layer V-NAND chip. Then, last August, it pursues up by mass generating a 48-layer V-NAND chip.

While Samsung may be the first to do so, it’s not alone in establishing 48-layer 3D NAND chips. Last year, SanDisk and Toshiba announced that they were also preparation for manufacturing 256Gbit, 3-bit-per-cell (X3) 48-layer 3D NAND flash chips that offer once over the capacity of their previously densest memory.

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Intel and Micron have also announced 3D NAND products. The two companies advertise that their technology would enable gum-stick-sized SSDs with more than 3.5 terabytes (TB) of cache  and standard 2.5-in. SSDs with bigger than 10TB. Along with the 15.36TB model, Samsung will offer the PM1633a SSD in 7.68TB, 3.84TB, 1.92TB, 960GB and 480GB versions later this year.

Because the SSDs are intend at enterprise use, and will be sold to reveals who’ll resolve the retail prices, Samsung did not disclose its own reduce for the drives.

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