Samsung Begins Mass Production of QLC SATA SSDs for Consumers

Subject: General Tech | August 9, 2018 - 11:10 PM |
Tagged: V-NAND, sata ssd, Samsung, QLC, enterprise ssd

Earlier this week Samsung announced that it has begun mass production on its first consumer solid state drive based on QLC (4 bits per cell) V-NAND. According to the company, the initial drives will offer 4TB capacities and deliver equivalent performance to Samsung’s TLC offerings along with a three year warranty.

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Samsung claims that its fourth generation V-NAND flash in QLC mode (with 16 voltage states) with 64 layers is able to offer up to 1Tb per chip. The 4TB SATA SSD uses a 3-bit SSD controller, TurboWrite technology, and 32 1Tb QLC V-NAND chips and thanks to the write cache (running the V-NAND in SLC or MLC modes) Samsung is able to wring extra performance out of the drive though it’s obviously limited ultimately by the SATA interface. Specifically, Samsung is promising sequential reads of 540 MB/s and sequential writes of up to 520 MB/s with the new QLC SSD. For comparison, Samsung’s fourth generation V-NAND operating in TLC mode is able to offer up to 256Gb and 512Gb capacities depending on package. Moving to fifth generation V-NAND in TLC mode Samsung is offering 256Gb per chip capacities (using 96 layers). Scouring the internet, it appears that Samsung has yet to reveal what it expects to achieve from 5th generation V-NAND in QLC mode. It should be able to at least match the 1Tb of 4th generation QLC V-NAND with the improved performance and efficiencies of the newer generation (including the faster Toggle DDR 4.0 interface) though I would guess Samsung could get more, maybe topping out at as much as 1.5Tb (eventually and if they use 96 layers--I was finding conflicting info on this). In any event, for futher comparison, Intel and Micron have been able to get 1Tb QLC 3D NAND flash chips and Western Digital and Toshiba are working on 96 Layer BiCS4 which is expected to offer up to 1.33Tb capacities when run in 4-bits per cell mode (QLC).

It seems that Samsung is playing a bit of catch up when it comes to solid state storage using QLC though they do still have a bit of time to launch products this year along with the other players. Samsung claims that it will launch its 4TB 2.5” consumer SSD first with 1TB and 2TB models to follow later this year.

Interestingly (and more vaguely), Samsung mentioned in its press release that it plans to begin rolling out M.2 SSDs for the enterprise market and that it will begin mass producing fifth generation 4-bit V-NAND later this year.

I am looking forward to more details on Samsung’s plans for QLC and especially on the specifications of fifth generation 4-bit V-NAND and the drives that it will enable for both consumer systems and the data center markets.

What are your thoughts on Samsung’s QLC V-NAND?

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Source: Samsung

The ultimate in SSDs? Adata's new SU900

Subject: Storage | July 11, 2017 - 01:42 PM |
Tagged: SU900, adata, 256GB, mlc, SM2258, sata ssd

Adata have added a new series of SSDs to their Ultimate lineup, the SU900, which ranges from the 256GB model sent to The Tech Report to review straight through to a 2TB model.  This incarnation uses 3D MLC flash but retains the Silicon Motion SM2258 controller which was used on the SU800s. In testing the drive surpassed the previous Ultimate drive but did not quite reach the performance levels of the Samsung 850 EVO in some benchmarks, however it did in the actual usage testing.  If you are looking for a drive in that class and have concerns about the longevity of TLC flash, this drive is worth a look.

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"Adata has issued an update to its Ultimate line of SSDs with its SU900 family. Join us as we find out how much of an upgrade 3D MLC flash brings to the company's Ultimate drives versus its past forays with 3D TLC NAND."

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Business on the front and back end, Kingston's SSDNow KC400 series

Subject: Storage | October 3, 2016 - 05:03 PM |
Tagged: kingston, ssdnow KC400, Phison PS3110-S10, mlc, sata ssd

Kitguru has another Phison PS3110-S10 based SSD up for review, the Kingston SSDNow KC400 512GB SATA SSD.  This drive is heavily packaged compared to others, with sixteen 32GB 15nm MLC NAND packages and a 256MB DDR3L-1600 paired with the eight channel controller.  The drive is marketed at businesses and with an 800TB lifetime, 450GB of writes everyday for the five year warranty as well as SmartECC and SmartRefresh it would fit that bill.  Consumers and businesses alike will appreciate the sequential read/write performance of 550MB/s and 530MB/s.  Overall it is another drive that fits into the existing pack of drives and is worth your consideration, especially if you have need of its error correction features.  Read the full review for more information.

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"Kingston’s SSDNow KC400 family is part of the company’s business-oriented SSD product line which features end-to-end data path protection, technologies to protect data in the NAND and guard against read errors, as well as good endurance."

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Source: Kitguru

Crucial's new MX300 SSD; new NAND means new sizes

Subject: Storage | September 6, 2016 - 02:29 PM |
Tagged: crucial, MX300, 1050GB, sata ssd, M.2, 88SS1074, tlc

The MX300 series utilizes Micron 384G-bit, 32 tier floating gate, 3D TLC NAND which means that the capacities are a little different than we are used to.  1050GB is an odd number, the 978GB available after formatting even more so, but in the end the actual number matters less than the performance.  The SSD Review tested this drive which uses a four channel Micron 88SS1074 controller and sports eight NAND packages with Micron LPDDR3 1333MHz DRAM for a cache.  They tested a single drive as well as setting up two in RAID 0, the single drive could hit 535MB/s read and 516MB/s write and RAID 0 did indeed come close to doubling that.  Drop by to see their full results.

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"Due to the new 384G-bit TLC 3D NAND, the MX300 line up is now offered in 275GB, 525GB, 750GB, 1050GB, and 2TB options. From this announcement, the 2TB option intrigued us the most, however, they are still unavailable, so we opted to get two 1050GB models for today's review."

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Storage

Toshiba's HK4R Enterprise SATA SSD, 2TB of speedy reading

Subject: Storage | July 5, 2016 - 01:29 PM |
Tagged: toshiba, HK4R, TC58, sata ssd

If you are looking for large sized storage and can accept the SATA 6Gbps bottleneck, the 1920GB Toshiba HK4R SATA SSD certainly has some room for files.  It uses Toshiba's own TC58 controller with 15nm MLC NAND and sports an endurance rating of 1 Drive Write Per Day for the duration of the 5 year warranty or up to 3520TB written.  The testing done at The SSD Review showed sequential read and write speeds of 524MB/s and 503MB/s respectively making the drive a great choice for consumers or enterprise as the drive has many features required in the data centre.  There is a distinct lack of pricing information, we shall see what these drives sell at some time in the near future.

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"SATA SSDs are all the rage in data centers. Unlike their PCIe bothers, these SATA SSDs don’t often need to have high endurance figures and lightning fast IOPS performance. Instead, they typically just need to be cheap, reliable, and what is becoming more important lately, high capacity."

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