Seagate Ships Consumer-Focused 12TB Helium Drives

Seagate is launching a trio of 12TB hard drives today with a focus on the consumer market. The 3.5” drives build upon the ‘PMR platters in a helium-filled enclosure’ platform used in the 10 TB consumer hard drives released last year. The new 12TB drives target three different market segments:

• Barracuda Pro Compute for desktops and entry-level direct-attached storage enclosures
• IronWolf NAS for 1-8 bay home, SOHO, and SMB NAS enclosures
• IronWolf Pro NAS for 1-16 bay creative professional and SME NAS enclosures

These are not the first 12TB drives in the market, as enterprise versions from both Seagate and Western Digital have been around for some time. However, Seagate is the first vendor to bring down the prices and ship 12TB drives in the consumer market.

From a hardware viewpoint, the three drives are similar to the Seagate Enterprise Capacity v7 drives launched in March 2017. All of them features eight PMR platters with a 923 Gb/in² areal density in a sealed enclosure filled with helium. That said, the Barracuda Pro Compute, meant for desktop use, doesn’t come with rotational vibration (RV) sensors or dual-plane motor balancing hardware. The RV sensors and the dual-plane balance / AgileArray features enable reliable performance in multi-drive enclosures. The other important differentiation aspects include firmware features, warranty / workload ratings, and value-added services like the Seagate Rescue Data Recovery.

The table below compares the characteristics of the three drives being introduced today.

HGST and Western Digital had come out with a number of helium-based drives for different applications before Seagate had even put out a single drive in that category. However, with the introduction of the Guardian series last year, Seagate wrested the initiative by targeting multiple market segments at the same time. The drives being launched today cement Seagate’s position in the consumer HDD market – they have the highest-capacity drives for both desktop and NAS usage currently. Their helium production line also seems to have achieved economies of scale – the launch prices of the 12TB drives undercut the 10TB ones from last year by as much as $100 (Update: Seagate corrected the pricing information provided to us in the initial press kit after our article was posted. The cost is now much closer to the WD Gold 12TB @ $520. The WD Gold is meant to go against the Seagate Enterprise Capacity v7, and has a 550 TB/yr workload limit. This makes the pricing for the Barracuda Pro and the IronWolf Pro a bit hard to digest) The $/GB metric has come down, as the launch prices for the 12TB drives are approximately the same as what we saw for the 10TB drives last year. That is definitely good news for consumers.​

Samsung Portable SSD T5 Review: 64-Layer V-NAND Debuts in Retail

​Samsung has been an active participant in the high-performance external SSD market with their Portable SSD series. The T1 was introduced in early 2015, while the T3 came out in early 2016. The T3 was the first retail product to utilize Samsung’s 48-layer TLC V-NAND. Today, Samsung is launching the Portable SSD T5. It is a retail pilot vehicle for their 64-layer TLC V-NAND as they ramp up its production. The Portable SSD T5 also moves up to a USB 3.1 Gen 2 Type-C interface, while retaining the same compact form factor and hardware encryption capabilities of the Portable SSD T3. Read on for our analysis of the product’s performance and value proposition.

ADATA SD700 512GB External SSD Capsule Review

​Flash-based external direct-attached storage (DAS) devices have been rapidly evolving over the last few years. The USB Type-C interface standard has prompted vendors to release updates to their lineup, but, the legacy USB 3.0 interfaces continue to remain popular. On the storage media side for SSDs, there has been a shift from MLC to TLC, and now, to 3D TLC. Flash has recently been at a premium as the foundries ramp up 3D NAND production while bringing down the MLC and regular TLC volume. This has led to SSDs and other flash-based products being sold at a premium. Amongst companies that don’t manufacture their own flash memory, ADATA was one of the first to announce and ship products based on 3D NAND (purchasing the flash from IMFT’s 3D NAND output).

We have already reviewed the ADATA Ultimate SU800 SSDs on the internal drive front. Along with the Ultimate SU800, ADATA also launched the SD700, an IP68 rated external SSD with 3D NAND. The unit comes with either an yellow or a black jacket, and its shell makes it shockproof in addition to its dust- and water-proof nature.

The ADATA SD700 has a USB 3.0 interface (micro B). There are three capacity points – 256GB, 512GB, and 1TB. ADATA claims speeds of up to 440 MBps, but doesn’t reveal much in terms of internal specifications in its product page. ADATA sent us a 512GB variant for review, and we present the results of our rigorous DAS evaluation of the unit below.

Buy ADATA SD700 IP68-rated External SSD 512GB on Amazon.com

The ADATA SD700 comes with a short USB 3.0 Micro-B male to USB 3.01 Type-A male cable and a quick start guide.

The SD700’s IP68 rating is enabled by the thick jacket around the enclosure. The enclosure is indeed sturdy – I had it drop down to the floor from a 6ft high shelf by accident multiple times, and the unit was none the worse for the wear.

Gallery: ADATA SD700 Packaging & Enclosure Design

Internally, the bridge chip used is the JMicron JMS578, which has UASP support. We have already seen this USB 3.0 to SATA III bridge chip in storage enclosures before. The SSD itself is the Ultimate SU800 using a Silicon Motion SM2258 controller with DRAM and IMFT 3D TLC flash. This information can be gathered without opening up the unit by looking at the CrystalDiskInfo information.

Testbed Setup and Testing Methodology

Evaluation of DAS units on Windows is done with the testbed outlined in the table below. For devices with a USB 3.0 (via a Micro B interface) connections (such as the ADATA SD700 512GB that we are considering today), we utilize the USB 3.1 Type-C port enabled by the Intel Alpine Ridge controller, along with a Type-C male to Type-A female connector. The controller itself connects to the Z170 PCH via a PCIe 3.0 x4 link.

The full details of the reasoning behind choosing the above build components can be found here. The list of DAS units used for comparison purposes is provided below.

• ADATA SD700 512GB
• Corsair Voyager GS 512GB
• G-DRIVE slim SSD USB-C 500GB
• Netac Z5 512GB
• SanDisk Extreme 510 480GB

Synthetic Benchmarks – CrystalDiskMark

CrystalDiskMark, despite being a canned benchmark, provides a better estimate of the performance range with a selected set of numbers. The numbers pretty uch back up ADATA’s 440 MBps claims. However, as evident from the screenshot below, the performance can dip to as low as 20 MBps for 4K random reads at low queue depths.

ADATA SD700 512GBCorsair Voyager GS 512GBG-DRIVE slim SSD USB-C 500GBNetac Z5 512GBSanDisk Extreme 510 480GB

Benchmarks – robocopy and PCMark 8 Storage Bench

Our testing methodology for DAS units also takes into consideration the usual use-case for such devices. The most common usage scenario is transfer of large amounts of photos and videos to and from the unit. The minor usage scenario is importing files directly off the DAS into a multimedia editing program such as Adobe Photoshop.

In order to tackle the first use-case, we created three test folders with the following characteristics:

• Photos: 15.6 GB collection of 4320 photos (RAW as well as JPEGs) in 61 sub-folders
• Videos: 16.1 GB collection of 244 videos (MP4 as well as MOVs) in 6 sub-folders
• BR: 10.7 GB Blu-ray folder structure of the IDT Benchmark Blu-ray (the same that we use in our robocopy tests for NAS systems)

For the second use-case, we take advantage of PC Mark 8’s storage bench. The storage workload involves games as well as multimedia editing applications. The command line version allows us to cherry-pick storage traces to run on a target drive. We chose the following traces.

• Adobe Photoshop (Light)
• Adobe Photoshop (Heavy)
• Adobe After Effects
• Adobe Illustrator

Usually, PC Mark 8 reports time to complete the trace, but the detailed log report has the read and write bandwidth figures which we present in our performance graphs. Note that the bandwidth number reported in the results don’t involve idle time compression. Results might appear low, but that is part of the workload characteristic. Note that the same testbed is being used for all DAS units. Therefore, comparing the numbers for each trace should be possible across different DAS units.

Performance Consistency

Yet another interesting aspect of these types of units is performance consistency. Aspects that may influence this include thermal throttling and firmware caps on access rates to avoid overheating or other similar scenarios. This aspect is an important one, as the last thing that users want to see when copying over, say, 100 GB of data to the flash drive, is the transfer rate going to USB 2.0 speeds. In order to identify whether the drive under test suffers from this problem, we instrumented our robocopy DAS benchmark suite to record the flash drive’s read and write transfer rates while the robocopy process took place in the background. For supported drives, we also recorded the internal temperature of the drive during the process. The graphs below show the speeds observed during our real-world DAS suite processing. The first three sets of writes and reads correspond to the photos suite. A small gap (for the transfer of the videos suite from the primary drive to the RAM drive) is followed by three sets for the next data set. Another small RAM-drive transfer gap is followed by three sets for the Blu-ray folder.

An important point to note here is that each of the first three blue and green areas correspond to 15.6 GB of writes and reads respectively. Throttling, if any, is apparent within the processing of the photos suite itself. 

ADATA SD700 512GBCorsair Voyager GS 512GBG-DRIVE slim SSD USB-C 500GBNetac Z5 512GBSanDisk Extreme 510 480GB

Despite getting quite hot in our performance consistency test (more than 70C), the drive doesn’t throttle. Thermal issues are definitely a concern in all water / dust-proof external SSDs, and the ADATA SD700 is no different. Consumers would do well to not subject sealed SSDs (such as this one and the SanDisk Extreme 510) to extremely heavy workloads.

Concluding Remarks

The SD700 continues ADATA’s tradition of bring external SSDs with good value for money to the market. As icing on the cake, the SD700 carries an IP68 rating also.

The performance of the drive leaves us with no doubt that it would be a great portable OS drive, even though ADATA doesn’t advertise it for that purpose. After all, we have a real SSD inside – the Ultimate SU800. The JMicron bridge chip is also able to map the SCSI Unmap commands to TRIM, as our little test below shows.

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Moving on to the pricing, the SD700 comes in at $209. In terms of cost per GB, we find that ADATA is beat only by G-Technology / SanDisk / Western Digital, which has its own flash manufacturing facility.

It is difficult to source IP68-rated enclosures into which one can put their own 2.5″ drive. Therefore, going the DIY route to create a compact product like the ADATA SD700 with all its features is not going to be a feasible solution for the product’s target market. ​ADATA must be given credit for being one of the first companies to bring 3D NAND to consumers in a IP68-rated product.

Buy ADATA SD700 IP68-rated External SSD 512GB on Amazon.com​