Introduction, Specifications, and Packaging
Everyone expects SSD makers to keep pushing out higher and higher capacity SSDs, but the thing holding them back is sufficient market demand for that capacity. With that, it appears Samsung has decided it was high time for a 4TB model of their 850 EVO. Today we will be looking at this huge capacity point, and paying close attention to any performance dips that sometimes result in pushing a given SSD controller / architecture to extreme capacities.
This new 4TB model benefits from the higher density of Samsung’s 48-layer V-NAND. We performed a side-by-side comparison of 32 and 48 layer products back in March, and found the newer flash to reduce Latency Percentile profiles closer to MLC-equipped Pro model than the 32-layer (TLC) EVO:
Latency Percentile showing reduced latency of Samsung’s new 48-layer V-NAND
We’ll be looking into all of this in today’s review, along with trying our hand at some new mixed paced workload testing, so let’s get to it!
Introduction, Specifications, and Packaging
ICY DOCK has made themselves into a sort of Swiss Army knife of dockable and hot-swappable storage solutions. From multi-bay desktop external devices to internal hot-swap enclosures, these guys have just about every conceivable way to convert storage form factors covered. We’ve looked at some of their other offerings in the past, but this week we will focus on a pair of their ToughArmor series products.
As you can no doubt see here, these two enclosures aim to cram as many 2.5” x 7mm form factor devices into the smallest space possible. They also offer hot swap capability and feature front panel power + activity LEDs. As the name would imply, these are built to be extremely durable, with ICY DOCK proudly running them over with a truck in some of their product photos.
Read on for our full review of the ICY DOCK ToughArmor MB998SP-B and MB993SK-B!
Subject: General Tech | April 5, 2016 - 12:47 PM | Jeremy Hellstrom
Tagged: NVMe, SAS, sata, PCIe SSD, low latency
The Register have put together a nice graphic and table displaying current storage technologies and how they relate to each other. They constructed the graph to demonstrate the major boundaries in storage, between cache/memory, local storage and external storage and how these are going to move thanks to new technology. NVMe-over-fabric will enable companies to utilize external storage at latencies lower than internal storage that still uses SATA or SAS, with only pure PCIe local storage outpacing its potential. X-Point, assuming it lives up to the hype, will blur the line between local storage and memory/cache storage, offering latency previously only seen in system memory or on-die cache.
They also provide a table to give you some rough ideas how this translates between storage media, normalizing it a theoretical task which would take L1 cache 1 second to access, this can make it somewhat easier to comprehend for some than nanoseconds.
"Two technology changes are starting to be applied and both could have massive latency reduction effects at the two main storage boundary points: between memory and storage on the one hand, and between internal and external, networked storage on the other."
Here is some more Tech News from around the web:
- Alphabet's Nest To Deliberately Brick Revolv Hubs @ Slashdot
- Meet Jide's Remix OS: Android on the desktop done right @ The Inquirer
- Google pushes April Android security update to Nexus devices @ The Inquirer
- FreeBSD 10.3 lands @ The Register
- Quinones and graphite make green battery @ Nanotechweb
- A One Year Redux On The Basement Computer Room For Benchmarking 50+ Systems Daily @ Phoronix
- AMD Details Bristol Ridge AM4 Performance @ Hardware Canucks
- Samsung starts mass producing 10nm-class NAND chips @ The Inquirer
Subject: Storage | February 18, 2016 - 03:14 PM | Jeremy Hellstrom
Tagged: Trion 150, toshiba, tlc, ssd, slc, sata, ocz, A15nm
As you may remember from Al's post, the OCZ Trion 150 is essentially the same as the previous Trion 100, except for the use of 15nm TLC flash from Toshiba and a lower initial price. Hardware Canucks got their paws on two of the drives from this series to benchmark, the 480GB and 960GB models. The 480GB model retains the 256MB DDR3 cache, the 960 doubles that to 512MB but there is one thing missing from this new series; instead of relying on capacitors to prevent lost data from a power failure they rely on OCZ's firmware based Power Failure Management Plus. Read Hardware Canucks full review to see if the new Trion can match the price to performance of the original.
"With the budget-focused SSD market exploding, OCZ is launching the Trion 150, a refresh of their original Trion 100 series which should offer better performance and an even lower price."
Here are some more Storage reviews from around the web:
- OCZ Trion 150 480GB @ Legion Hardware
- Mushkin Striker 480GB @ eTeknix
- Samsung 750 EVO @ The SSD Review
- PNY CS1311 & XLR8 CS2211 SSDs Review @ Hardware Canucks
- QNAP TS-453A 4-bay NAS @ techPowerUp
- Kingston DataTraveler 2000 @ The Inquirer
Introduction, Specifications and Packaging
The steady increase in flash memory capacity per die is necessary for bringing SSD costs down, but SSDs need a minimum number of dies present to maintain good performance. Back when Samsung announced their 48-layer VNAND, their Senior VP of Marketing assured me that the performance drop that comes along with the low die count present in lower capacity models would be dealt with properly. At the time, Unsoo Kim mentioned the possibility of Samsung producing 128Gbit 48-layer VNAND, but it now appears that they have opted to put everything into 256Gbit on 3D side. Fortunately they still have a planar (2D) NAND production line going, and they will be using that same flash in a newer line of low capacity models. When their 850 Series transitions over to 48-layer (enabling 2TB capacities), Samsung will drop the 120GB capacity of that line and replace it with a new OEM / system builder destined 750 EVO:
The SSD 750 EVO Series is essentially a throwback to the 840 EVO, but without all of the growing pains experienced by that line. Samsung assured me that the same corrections that ultimately fixed the long-term read-based slow down issues with the 840 EVO also apply to the 750 EVO, and despite the model number being smaller, these should actually perform a bit better than their predecessor. Since it would be silly to just launch a single 120GB capacity to make up for the soon to be dropped 850 EVO 120GB, we also get a 250GB model, which should make for an interesting price point.
Baseline specs are very similar to the older 840 EVO series, with some minor differences (to be shown below). There are some unlisted specs that are carried over from the original series. For those we need to reference the slides from the 840 EVO launch:
Subject: Storage | February 3, 2016 - 03:31 PM | Allyn Malventano
Tagged: Trion 150, toshiba, tlc, ssd, slc, sata, ocz, A15nm
*Note* This piece originally stated 'A15nm', however this was an error in the Trion 150 spec sheet at OCZ. It has been corrected in this article (as well as at the OCZ web site).
2015 was a bit of a rough year for OCZ, as their integration with parent company Toshiba ran into a few performance bumps in the road. First was the Vector 180 launch, which saw some particularly troublesome stalls during writes and TRIM operations. The Trion 100 launch went a bit smoother, but we did note some inconsistencies in caching performance of those TLC/SLC caching SSDs.
OCZ hopes to turn things around by kicking off 2016 with some updates to their product lines. First up is the just announced Trion 150:
Looking at the spec sheets of the Trion 100 and 150, it may be difficult to spot any differences. I’ll save you the trouble and say that only *one digit* changes, but it is an important one. The Trion 150 will use Toshiba 15nm TLC flash (the Trion 100 used A19nm). What is interesting about this is that the Trion 150 carries the same endurance rating as its predecessor. A flash memory die shrink typically comes with a corresponding reduction in endurance, so it is good to see Toshiba squeeze this likely last die shrink to their planar flash for all of the endurance they can. Further backing up that endurance claim, the Trion 150 will carry OCZ’s ShieldPlus warranty, which offers shipping-paid advance-RMA (without receipt) of this product line for three years!
OCZ has Trion 150 samples on the way to us, and we will get a full performance review of them up as soon as we can! Full press blast follows after the break.
Got a high bandwidth video camera that fills a piddly 4TB SSD in too short of a time? How about a 13TB SSD!
Fixstars certainly gets cool points for launching such a high capacity SSD, but there are a few things to consider here. These are not meant to be written in a random fashion and are primarily geared towards media creation (8k RAW video). Filling at saturated SATA bandwidth, these will take about 7 hours to fill, and just as long to empty onto that crazy high end editing machine. But hey, if you can afford 13TB of flash (likely ~$13,000) just to record your video content, then your desktop should be even beefier.
The take home point here is that this is not a consumer device, and it would not work out well even for pro gamers with money to burn. The random write performance is likely poor enough that it could not handle a Steam download over a high end broadband link.
Subject: Storage | August 13, 2015 - 08:12 PM | Allyn Malventano
Tagged: FMS 2015, ssd, sata, SAS, pcie, NVMe, novachips, HLNAND, flash
It turns out Samsung wasn’t the only company to have 16TB SSDs at Flash Memory Summit after all:
Now that I’ve got your attention, Novachips is an SSD company that does not make their own flash, but I would argue that they make other peoples flash better. They source flash memory wafers and dies from other companies, but they package it in a unique way that enables very large numbers of flash dies per controller. This is handy for situations where very large capacities per controller are needed (either physically or logically).
Normally there is a limit to the number of dies that can communicate on a common bus (similar limits apply to DRAM, which is why some motherboards are picky with large numbers of DIMMs installed). Novachips gets around this with an innovative flash packaging method:
The 16-die stack in the above picture would normally just connect out the bottom of the package, but in the Novachips parts, those connections are made to a microcontroller die also present within the package. This part acts as an interface back to the main SSD controller, but it does so over a ring bus architecture.
To clarify, those 800 or 1600 MB/sec figures on the above slide are the transfer rates *per ring*, and Novachips controller is 8-channels, meaning the flash side of the controller can handle massive throughputs. Ring busses are not limited by the same fanout requirements seen on parallel addressed devices, which means there is no practical limit to the number of flash packages connected on a single controller channel, making for some outrageous amounts of flash hanging off of a single controller:
That’s a lot of flash on a single card (and yes, the other side was full as well).
The above pic was taken at last years Flash Memory Summit. Novachips has been making steady progress on controller development as well. Here is a prototype controller seen last year running on an FPGA test system:
…and this year that same controller had been migrated to an ASIC:
It’s interesting to see the physical differences between those two parts. Note that both new and old platforms were connected to the same banks of flash. The newer photo showed two complete systems – one on ONFi flash (IMFT Intel / Micron) and the other on Toggle Mode (Toshiba). This was done to demonstrate that Novachips HLNAND hardware is compatible with both types.
Novachips also had NVMe PCIe hardware up and running at the show.
Novachips was also showing some impressive packaging in their SATA devices:
At the right was a 2TB SATA SSD, and at the left was a 4TB unit. Both were in the 7mm form factor. 4TB is the largest capacity SSD I have seen in that form factor to date.
Novachips also makes an 8TB variant, though the added PCB requires 15mm packaging.
All of this means that it is not always necessary to have huge capacity per die to achieve a huge capacity SSD. Imagine very high capacity flash arrays using this technology, connecting a single controller to a bank of Toshiba’s new QLC archival flash or Samsung’s new 256Gbit VNAND. Then imagine a server full of those PCIe devices. Things certainly seem to be getting big in the world of flash memory, that’s for sure.
Even more Flash Memory Summit posts to follow!
Subject: Storage | July 20, 2015 - 01:01 PM | Allyn Malventano
Tagged: vnand, ssd, SM863, sata, Samsung, PM863
...you get the Samsung PM863 and SM863 lines of enterprise SSDs! These 2.5" SATA units were just announced, and as we suspected after reviewing the new 2TB 850 EVO and Pro, these new models can include even more flash packages, dramatically increasing the flash capacity. Here is a breakdown of the launch pricing and capacities:
SM863 (2-bit MLC VNAND):
- 120GB - $140 ($1.17/GB)
- 240GB - $180 ($0.75/GB)
- 480GB - $330 ($0.69/GB)
- 960GB -
$870 ($0.91/GB) < possible typo$640 ($0.67/GB)
- 1.92TB - $1260 ($0.66/GB)
PM863 (3-bit MLC VNAND):
- 120GB - $125 ($1.04/GB)
- 240GB - $160 ($0.67/GB)
- 480GB - $290 ($0.60/GB)
- 960GB - $550 ($0.57/GB)
- 1.92TB - $1100 ($0.57/GB)
- 3.84TB - $2200 ($0.57/GB)
These are some very competitive prices for enterprise SSDs, and the fact that the TLC version can cram just under 4TB into a 7mm 2.5" form factor is just astounding. The MLC version capacities appear to still follow that of the 850 Pro, minus a bit of available capacity due to higher levels of over-provisioning.
More impressive is the endurance ratings of these SSDs. The SM863 line is rated (varying by capacity) from 770 Terabytes Written (TBW) to an astonishing 12,320 TBW for the 1.92TB model! That's over 12 Petabytes! The PM863 is rated lower as it is TLC based, but is still no slouch as it ranges from 170 to 5,600 TBW for the 3.84TB capacity. The SM863 carries a 5-year warranty, while the PM863 drops that to 3-years.
We've been waiting to see Samsung's 32-layer VNAND appear in enterprise units for some time now, and look forward to testing them just as soon as we can get our hands on them!
Full press blast after the break.
Subject: Storage | July 9, 2015 - 04:37 PM | Jeremy Hellstrom
Tagged: Samsung, 850 EVO, 850 PRO, M600, micron, Sandisk Extreme Pro, ssd, roundup, sata
[H]ard|OCP has just posted a roundup of four affordable SATA SSDs to show which would be the best one to pick up as the majority of users are not able to afford an NVME PCIe SSD. The drives are all within $50 above or below $200, with the 850 PRO having the highest cost per gigabyte and the EVO the least. They test content creation and moving large files as well as synthetic benchmarks to come out with a ranking of the four drives which you can refer to if you will be shopping for storage in the near future. In comparison they use the G.SKILL Phoenix Blade to show off what the new technology can do, for those that can afford it.
"Despite the performance benefits, PCIe SSDs remain an expensive niche market. That means that most of us are not going to be loading up a high end system with PCIe SSDs. Most of us mere mortals will be using SATA SSDs. We tested some of the best SATA drives with enthusiast-friendly price tags."
Here are some more Storage reviews from around the web:
- OCZ Trion 100 Series Entry Level SSD @ [H]ard|OCP
- OCZ Trion 100 @ The SSD Review
- OCZ Trion 100 SSD @ HardwareHeaven
- OCZ Trion 100 240GB and 480GB @ Kitguru
- OCZ Trion 100 480GB & 960GB SSD Review @ Hardware Canucks
- OCZ Trion 100 480 GB @ techPowerUp
- ASUSTOR AS-5102T 2-bay NAS Review @ Madshrimps