Maxiotek Unveils MK8115: Low-Cost SSD Controller for 3D NAND SATA SSDs

Maxiotek this week introduced its first SSD controller designed for affordable SSDs with an SATA interface, which is meant to be paired with new types of NAND flash memory, including chips with 3D architecture as well as ICs made using thin fabrication processes. The company is working with various makers of SSDs as well as OEMs, so actual drives based on the MK8115 will hit the market in the foreseeable future. In fact, one of the first drives featuring the chip is ADATA’s SU700, which was demonstrated back at Computex.

The Maxiotek MK8115 is a quad-channel controller that supports a SATA 3.2 host interface as well as various types of SLC, MLC, 3D MLC, and 3D TLC NAND flash memory. Internally, Async, Toggle, and ONFi NAND interfaces are supported, with up to 400 MT/s transfer rates. The MK8115 controller supports the developer’s AgileECC error correction (with programmable ECC parity that supports 1 KB code-word length correctable up to 76 bits, something that implies on BCH method) with virtual parity recovery; modern security capabilities like AES-256, SM4, TCG-OPAL 2.0, IEEE1667; low-power modes (Slumber/Device Sleep, etc.); advanced static/dynamic wear-leveling and so on. One of the key features that Maxiotek advertises about its MK8115 is the fact that it does not require DRAM, thus allowing to build very affordable SSDs.

When it comes to compatibility with actual memory, the MK8115 supports SLC NAND produced using 20 nm-class fabrication processes, MLC NAND made using all three iterations of 10 nm-class manufacturing technologies (1x, 1y, 1z) as well as IMFT’s 3D MLC and 3D TLC NAND flash. The controller can support up to 1536 GB of memory (when coupled with IMFT’s 384 Gb 3D TLC ICs), which should be enough for low-cost SATA SSDs for at least a couple of years.

Performance-wise, the MK8115 is on par with other SATA 3.2 devices: it can handle up to 560 MB/s sequential read speed and up to 530 MB/s sequential write speed. As for random operations, the new SSD controller is rated to perform up to 100K random read IOPS as well as up to 75K random write IOPS. In a bid to boost writing performance of 3D TLC NAND-based SSDs, the MK8115 can also use a part of the NAND in pseudo-SLC mode, which is what other controllers do these days as well. Maxiotek claims that the upcoming DRAM-less SSDs powered by the MK8115 will perform just like drives featuring DRAM cache (to store LBA tables) in typical workloads.

The Maxiotek MK8115 chip is available in 12×12 mm² 288-ball TFBGA package and use 3.3V/1.8V/1.2V power supply, which make it compatible with SSDs in M.2 and mSATA. Since SATA 2.5” form-factors require +5V and +12V rails, to build such SSDs featuring the MK8115, manufacturers will have to integrate a basic VRM into the package, which should not be too hard.

Maxiotek may not be a household name, but the company is basically a spin-off from JMicron, whom focuses solely on SSD controllers. The two companies are still based in the same building in Hsin-Chu, Taiwan, but we have no idea whether they share any resources. Nonetheless, a good news is that Maxiotek will not start to build itself from scratch, but will continue from where JMicron stopped. At least, the company says it has an experienced team of engineers as well as relations with partners, which include all major makers of SSDs as well as PC OEMs.

Netac Z5 USB 3.1 Gen 2 Portable SSD Review

The last few years have seen rapid advancements in flash technology including planar 1x nm NAND, TLC, and 3D V-NAND. External high-speed interfaces such as USB 3.x have also become ubiquitous. These advances have led to the appearance of compact bus-powered direct attached storage units with very high performance for day-to-day data transfer applications. We have already looked at portable external SSDs such as the Samsung T1 and T3, as well as the SanDisk Extreme 900. Today, we will be looking at Netac’s Z5, a portable SSD with a USB 3.1 Gen 2 10Gbps Type-C interface.

Western Digital Adds Helium-Filled WD Gold 10 TB HDD to Lineup

Western Digital has this week introduced its new 10TB datacenter-class helium-filled WD Gold hard drive. This drive, according to WD, boasts higher performance compared to its predecessor combined with lower power consumption. The new WD Gold 10 TB will be Western Digital’s flagship HDD for data-centers and will compete against hard drives of similar capacity from Seagate and HGST.

The WD Gold 10 TB drive (WD101KRYZ) shares the hermetically-sealed 3.5” platform with the WD Gold 8 TB, which was introduced earlier this year. The new drive is based on multiple PMR (perpendicular magnetic recording) platters, features a 7200 RPM spindle speed, a double-size 256 MB DRAM cache and is based on the SATA 6 Gbps interface (right now, WD does not offer Gold HDDs with SAS interface). Just like the other WD Gold HDDs, the new 10 TB model was designed for a variety of server applications, including small to medium-scale machines, as well as rack-mount data center servers and storage enclosures. The drive is promoted as being optimized for RAID environments and supports enhanced RAFF technology that protects against vibration (by monitoring linear and rotational vibration in real time) as well as head positioning system with two actuators, which increases positional accuracy. In addition, the WD Gold 10 TB also supports time-limited error recovery technology (TLER), which prevents drive fallout caused by extended HDD error recovery processes.

The WD Gold 8 TB model released earlier this year already featured a number of performance and energy efficiency optimizations and the WD Gold 10 TB hard drive is designed to improve even further. The 10 TB drive offers a 249 MB/s sustained sequential transfer rate (up from 205 MB/s in the case of the 8 TB model). Moreover, maximum power consumption of the WD Gold 10 TB is 7.1 W (down from 7.4 W for the 8 TB model, and significantly less than 8.6 W consumed by HGST’s Ultrastar He10 around the same ballpark as the 6.8W operating power number for the HGST’s Ultrastar He10 SATA model). Western Digital does not reveal many details about how it managed to improve performance and energy efficiency, but it is logical to assume that increased areal density, an enlarged cache, and further tweaks of electronics are responsible. As for reliability, just like other WD Gold series HDDs, the new one is rated for 2.5 million hours MTBF and comes with a 550TB of writes per year rated workload, which at the rated write speed gives 100 minutes of full sequential writes per day.

Western Digital’s Gold 10 TB hard drives are currently available at select U.S. distributors, resellers and will shortly be sold in the company’s online store. The HDD costs $847.99 when bought from CDW.

Gallery: Western Digital Adds Helium-Filled WD Gold 10 TB HDD to Lineup