Subject: Storage, Shows and Expos | February 25, 2013 - 02:12 PM | Jeremy Hellstrom
Tagged: ocz, ssd, PCIe SSD, CeBIT 2013, ZD-XL Accelerator
SAN JOSE, CA—February 25, 2013—OCZ Technology Group, Inc. (Nasdaq:OCZ), a leading provider of high-performance solid-state drives (SSDs) for computing devices and systems, today announced that it will preview a variety of enterprise storage solutions at next week’s CeBIT 2013 conference in Hannover, Germany. As a renowned global forum, CeBIT represents a great opportunity for attendees to be the first to see and experience the latest innovations in solid-state storage from an industry leader in enterprise SSDs, virtualization, and caching software. OCZ offers a complete suite of storage solutions that address VMware, Linux, and SQL Server platforms, and invites IT decision-makers who are evaluating or implementing solid-state storage in the data center to visit the Company’s exhibit in Hall 2, Stand E43, from March 5th through 9th.
OCZ will unveil the next-generation ZD-XL SQL Accelerator, a culmination of enterprise hardware and software converging as one tightly integrated and optimized solution. The ZD-XL Accelerator addresses SQL Server database applications to not only ensure that the data for this implementation is right, relevant, and readily available on SSD flash when the SQL Server needs it, but also that the data is accessed with the highest possible I/O performance. For simple deployment and ease of use, this tightly integrated, optimized solution features ‘implementation wizards’ to guide DBAs so they can optimally manage data cached to the flash. While showcasing the ZD-XL solution OCZ will invite enterprise customers to become beta testers for this exciting solution.
Also included in OCZ’s exhibition at CeBIT will be demonstrations to preview the upcoming VXL 1.3 Virtualization Software and LXL Acceleration Software with OCZ’s innovative Direct Pass Caching Technology, which not only addresses VMware but is also optimized for Linux applications. OCZ is one of the few SSD providers with a robust portfolio of virtualization and caching software that combine the power of flash acceleration with the power of storage virtualization. This enables multiple virtual server loads to run concurrently on a single physical host, not only increasing CPU and memory resource utilization, but also simplifying deployment, high availability (HA), and maintenance of the server loads.
The next-generation of workstation PCI Express (PCIe)-based SSDs will also be available soon as part of the Company’s award-winning Vector Series. These drives reside directly on the PCIe bus and will support four PCIe Gen2 lanes providing lower latency to data, faster file transfers and system boot-ups, expanded storage capacities, and an even quicker, more responsive experience over the already blazingly fast SATA 3.0-based Vector Series. The Vector PCIe Series will feature an advanced suite of flash management tools that deliver enhanced drive endurance and data, making it ideally suited for power computing, content creation, and workstation applications.
Subject: Storage | February 22, 2013 - 01:33 PM | Jeremy Hellstrom
Tagged: Samsung 840, Samsung, ssd, 120gb, Samsung MDX
[H]ard|OCP just wrapped up a review of the 120GB Samsung 840, using their own ARM Cortex R4 based MDX controller and TLC memory for storage. They compare the speed of this drive to the 256GB 840 Pro, Kingston's V300 120GB and the Intel 335 240GB to contrast the difference the type of NAND used can make to performance. This is especially evident on the write and latency benchmarks, which fall well behind the competition. From [H]'s testing it is apparent that TLC memory is very vulnerable to reduction in size, the reduced channels really hurt performance and put the 120GB model far behind the larger sized 840s which they have tested with much better results.
"The 120GB Samsung 840 Series SSD features the powerful 8-channel MDX controller and TLC NAND. While this value SSD comes at a very good price, it also features much lower speeds than its larger capacity brethren. We put this value SSD through our suite of steady state tests to see if it can pass muster."
Here are some more Storage reviews from around the web:
- Mushkin Atlas 480GB SSD Review - Performance Meets Capacity In The Ultra World @ SSD Review
- MyDigitalSSD BP4 Slim 7 Series SSD @ SSD Review
- Corsair Neutron GTX 240GB SSD Review @ Techgage
- OCZ Vector 256GB Solid State Drive Review @ Pro-Clockers
- Kingfast F3 Plus SSD @ SSD Review
- TRIM Check: Overview of an essential SSD TRIM functionality tester @ Tweaktown
- Seagate Constellation ES.3 4TB Enterprise Hard Drive Review @ Techgage
- Two 2 Bay NAS Review: Synology DiskStation DS213+ and QNAP TS-269 Pro @ Custom PC Review
- Vantec NexStar NST-D300WS3 WiFi HDD Dock Review @ Hi Tech Legion
- LaCie 5big Thunderbolt: super-fast 20TB NAS device @ Hardware.info
- ASUSTOR AS-604T 4-bay NAS Server for Home and Small Business Review @ Madshrimps
- Asustor AS-604T NAS review: Worthy new competitor for QNAP and Synology @ Hardware.info
- ADATA DashDrive Elite 500GB - External USB3.0 Hard Drive @ FunkyKit
- Icy Dock Blizzard HDD Enclosure & EZ-Dock Docking Station @ Silent PC Review
- Patriot SuperSonic Magnum 256GB USB 3.0 Drive @ Kitguru
- ADATA DashDrive Air AE400 Wireless Storage Reader Review @ Custom PC Review
- Patriot Gauntlet 320GB Wireless Hard Drive @ eTeknix
Taking an Accurate Look at SSD Write Endurance
Last year, I posted a rebuttal to a paper describing the future of flash memory as ‘bleak’. The paper went through great (and convoluted) lengths to paint a tragic picture of flash memory endurance moving forward. Yesterday a newer paper hit Slashdot – this one doing just the opposite, and going as far as to assume production flash memory handling up to 1 Million erase cycles. You’d think that since I’m constantly pushing flash memory as a viable, reliable, and super-fast successor to Hard Disks (aka 'Spinning Rust'), that I’d just sit back on this one and let it fly. After all, it helps make my argument! Well, I can’t, because if there are errors published on a topic so important to me, it’s in the interest of journalistic integrity that I must now post an equal and opposite rebuttal to this one – even if it works against my case.
First I’m going to invite you to read through the paper in question. After doing so, I’m now going to pick it apart. Unfortunately I’m crunched for time today, so I’m going to reduce my dissertation into the form of some simple bulleted points:
- Max data write speed did not take into account 8/10 encoding, meaning 6Gb/sec = 600MB/sec, not 750MB/sec.
- The flash *page* size (8KB) and block sizes (2MB) chosen more closely resemble that of MLC parts (not SLC – see below for why this is important).
- The paper makes no reference to Write Amplification.
Perhaps the most glaring and significant is that all of the formulas, while correct, fail to consider the most important factor when dealing with flash memory writes – Write Amplification.
Before geting into it, I'll reference the excellent graphic that Anand put in his SSD Relapse piece:
SSD controllers combine smaller writes into larger ones in an attempt to speed up the effective write speed. This falls flat once all flash blocks have been written to at least once. From that point forward, the SSD must play musical chairs with the data on each and every small write. In a bad case, a single 4KB write turns into a 2MB write. For that example, Write Amplification would be a factor of 500, meaning the flash memory is cycled at 500x the rate calculated in the paper. Sure that’s an extreme example, but the point is that without referencing amplification at all, it is assumed to be a factor of 1, which would only be the case if you were only writing 2MB blocks of data to the SSD. This is almost never the case, regardless of Operating System.
After posters on Slashdot called out the author on his assumptions of rated P/E cycles, he went back and added two links to justify his figures. The problem is that the first links to a 2005 data sheet for 90nm SLC flash. Samsung’s 90nm flash was 1Gb per die (128MB). The packages were available with up to 4 dies each, and scaling up to a typical 16-chip SSD, that only gives you an 8GB SSD. Not very practical. That’s not to say 100k is an inaccurate figure for SLC endurance. It’s just a really bad reference to use is all. Here's a better one from the Flash Memory Summit a couple of years back:
The second link was a 2008 PR blast from Micron, based on their proposed pushing of the 34nm process to its limits. “One Million Write Cycles” was nothing more than a tag line for an achievement accomplished in a lab under ideal conditions. That figure was never reached in anything you could actually buy in a SATA SSD. A better reference would be from that same presentation at the Summit:
This shows larger process nodes hitting even beyond 1 million cycles (given sufficient additional error bits used for error correction), but remember it has to be something that is available and in a usable capacity to be practical for real world use, and that’s just not the case for the flash in the above chart.
At the end of the day, manufacturers must balance cost, capacity, and longevity. This forces a push towards smaller processes (for more capacity per cost), with the limit being how much endurance they are willing to give up in the process. In the end they choose based on what the customer needs. Enterprise use leans towards SLC or eMLC, as they are willing to spend more for the gain in endurance. Typical PC users get standard MLC and now even TLC, which are *good enough* for that application. It's worth noting that most SSD failures are not due to burning out all of the available flash P/E cycles. The vast majority are due to infant mortality failures of the controller or even due to buggy firmware. I've never written enough to any single consumer SSD (in normal operation) to wear out all of the flash. The closest I've come to a flash-related failure was when I had an ioDrive fail during testing by excessive heat causing a solder pad to lift on one of the flash chips.
All of this said, I’d love to see a revisit to the author’s well-structured paper – only based on the corrected assumptions I’ve outlined above. *That* is the type of paper I would reference when attempting to make *accurate* arguments for SSD endurance.
SAN JOSE, CA—February 19, 2012—OCZ Technology Group, Inc. (Nasdaq:OCZ), a leading provider of high-performance solid-state drives (SSDs) for computing devices and systems, today announced a new 20 nanometer (nm) NAND flash version of its award-winning Vertex 3 SSD Series. The new Vertex 3.20 SSD is a 2.5-inch, 6Gbps SATA III-based Multi-Level Cell (MLC) drive that implements the feature-set of the Vertex 3 Series but is built around smaller, state-of-the-art NAND flash process geometry.
Being that the Vertex 3 Series is one of OCZ’s most popular SSDs to date, and has received numerous accolades from media reviewers globally, the implementation of 20nm NAND flash will extend its availability and enable mainstream users of mobile and desktop platforms to improve gaming, multimedia, and the overall computing experience over traditional hard disk drives (HDDs) and other competing SSDs. The Vertex 3.20 SSD will be available in 120GB and 240GB storage capacities, with 480GB capacities to follow soon.
Utilizing the proven and effective LSI SandForce® SF-2200 processor, the Vertex 3.20 SSD delivers exceptional performance of synchronous 20nm NAND flash supporting read bandwidth up to 550MB/s, write bandwidth up to 520MB/s, random read performance up to 35,000 input/output operations per second (IOPS), and random write performance up to 65,000 IOPS. It is also optimized to provide excellent endurance and reliability coupled with power efficiency.
“OCZ is always looking for ways to deliver superior solid state drive storage performance and features, as well as making this technology more accessible to the complete range of customers,” said Daryl Lang, Senior Vice President of Product Management for OCZ Technology. “The Vertex 3 has been a popular SSD series among consumers and implementing the newer, smaller process geometry will not only extend its life, but enables mainstream users with an excellent computing experience at a competitive price point.”
The Vertex 3.20 SSD is supported by a 3-year warranty to ensure customer satisfaction and will be available shortly through OCZ’s global channel in 120GB and 240GB storage capacities.
Subject: Storage | February 15, 2013 - 04:26 PM | Jeremy Hellstrom
Tagged: vector, ssd, sata, ocz, mlc, Indilinx Barefoot
Just in case you forgot how impressive the OCZ Vector 256GB is, Overclockers Club would like to remind you. The Indilinx Barefoot 3 controller is matched with low cost 25nm MLC IMFT NAND modules and 512MB of DDR3-1600 RAM for a cache. That translates to incredibly fast performance but without the high price of other drives. The 256GB model sits currently just under $1/GB, it is not the least expensive SSD available but when you consider the speeds this drive operates at it is the best value. Remind yourself where OCZ's Vector sits in the pack by reading on at OCC.
"OCZ's Vector line of solid state drives is every bit the performer that the Vertex 4 drives are with very few exceptions. In many of the tests, the two fastest drives were the Vertex 4 and OCZ's latest Indilinx Barefoot 3-equipped Vector. The only real weakness I saw was that the Vector was less frugal with the CPU cycles than the other Indilinx equipped drives. OCZ's move to the Barefoot 3 controller is beginning to pay dividends as it uses the technologies it has available in-house after the Indilinx and PLX acquisitions. It's taken a while to go all-in but that time has come. As the first totally in-house designed controller from OCZ, it seems to have hit on a controller that does better at managing real world usage scenarios and handling both compressible and incompressible data streams.”
Here are some more Storage reviews from around the web:
- OCZ Vector 256GB Solid State Drive Review @ OCIA
- Micron P400m 200GB Enterprise SSD @ Tweaktown
- Samsung 840 Pro 256GB SSD @ Tweaktown
- Samsung 840 SSD Storage Endurance Testing - TLC to the End @ Tweaktown
- kingston HyperX 3K 120GB SSD Review @ XtremeComputing
- Intel DC S3700 800GB Enterprise SSD @ Tweaktown
- Intel 525 Series mSATA SSD Performance Roundup @ Legit Reviews
- Plextor M5M 128GB review: the mSATA version of the M5 Pro @ Hardware.info
- Plextor 128GB M5M mSATA @ Kitguru
- MyDigitalSSD BP4 120GB SSD Review - SATA 3 At an Amazing Price @ SSD Review
- Micron P400m @ AnandTech
- Intel 525 mSATA SSD Review – Every Capacity Tested @ HCW
- Intel SSD 335 vs. Intel SSD 330 Review: Inexpensive SSD Evolution @ X-bit Labs
- Western Digital Red Hard Disk Drives for Network Attached Storage @ X-bit Labs
- Seagate Enterprise Capacity 3.5 V.3 4TB SATA III HDD Review @ NikKTech
- HighPoint RocketStor 5322 Review @ OCC
- Kingston Wi-Drive MobileLite Wireless Card Reader Preview @ Legit Reviews
- Kingston DataTraveler HyperX Predator 512GB Flash Drive Review @ Techgage
- Kingston DataTraveler Ultimate G3 64GB USB 3.0 Flash Drive Review @ NikKTech
- SanDisk Extreme 64GB USB 3.0 Flash Drive @ Tweaktown
- Thecus N5550 @ Legion Hardware
- Thecus Top Tower N8850 review: a powerful eight-disk NAS device @ Hardware.info
- 24 two-bay NAS device group test @ Hardware.info
- Transcend StoreJet 25M3 1 TB External USB 3.0 HDD Review @ OCC
Subject: Storage | February 8, 2013 - 07:25 PM | Jeremy Hellstrom
Tagged: SF-2281 controller, Jaycrest, Intel, 335 Series, 240 GB, 20nm
The Intel 520 and 335 series are very similar, both using the SF-2281 controller with the difference being the flash chips. The 335 uses the newly designed 20nm MLC flash which gives both higher storage density, retains the same 3,000 Program/Erase cycles as the 25nm 520 and it keeps the cost of the drives down. [H]ard|OCP put it through tests similar to the battery of benchmarks Al did and it will come as no surprise that their results were similar as well. This drive is never going to beat flagship SSDs in terms of raw performance but for readers who are unwilling to spend top dollar for an SSD the Intel 335 series allows you to pick up a 256GB SSD for under $200 without sacrificing anything but a bit of performance in certain specific usage scenarios.
"Intel has released its new Intel 335 Series SSDs featuring 20nm MLC NAND and a SandForce SF-2281 processor. Its new MLC NAND boasts impressive power and write specifications. This SSD is geared for the budget market, but will it be able to compete with low-cost TLC alternatives?"
Here are some more Storage reviews from around the web:
- 52 128 GB & 256 GB SSDs tested and compared @ Hardware.info
- Kingston SSDNow V300 120GB SSD Review @ Hardware Canucks
- MyDigitalSSD BP4 120GB 2.5-inch SSD @ Tweaktown
- OCZ Agility 4 256GB Solid State Drive Review @ Pro-Clockers
- Kingston SSDNow V300 120GB @ Hardware.info
- MyDigitalSSD BP4 2.5-inch 240GB SSD @ Tweaktown
- OCZ Vector 256GB SSD Review @ HCW
- Mushkin Chronos 240 GB @ techPowerUp
- Kingston SSDNow V300 120GB SSD @ eTeknix
- Kingston SSDNow V300 120GB SSD Review @ Techgage
- Hard Disk Drive Performance Comparison Guide @ TechARP
- Western Digital WD Black WD2002FAEX 2TB 7200 RPM 64MB Cache HDD Review @ Madshrimps
- Silicon Power Armor A15 1TB USB 3.0 Portable Hard Drive Review @ NikKTech
- Synology DS2413+ review: user-friendly 12-disk NAS device @ Hardware.info
- Icy Dock MB996SP-6SB "ToughArmor" SATA Backplane Review @ Hi Tech Legion
- ADATA DashDrive Elite 500GB HE720 External Drive Review @ Legit Reviews
Introduction, Specifications and Packaging
With newer and faster SSDs coming to market, we should not forget those capable controllers of yesteryear. There are plenty of folks out there cranking out products based on controllers that were until very recently the king of the hill. Competition is great for the market, and newer product launches have driven down the cost of the older SandForce 2281 SATA 6Gb/sec controller. ADATA makes a product based on this controller, and it's high time we gave it a look:
The ADATA XPG SX900 launched mid last year, and was ADATA's first crack at the eXtended capacity variant of the SandForce firmware. This traded off some of the spare area in the interest of more capacity for the consumer.
Subject: Storage | February 5, 2013 - 03:16 AM | Tim Verry
Tagged: ssd, SandForce SF-2281, sandforce, mlc, intel 335, Intel
Intel has added a new drive to its existing 335 SSD series. The new drive offers up 180GB of storage, but maintains the same level of read and write performance as its larger 240GB sibling.
The 180GB version uses 20nm MLC NAND flash paired with a SandForce SF-2281 controller. According to the Intel-provided spec sheet (PDF), the new drive is capable of sustained read and write speeds of 500 MB/s and 450 MB/s respectively. Further, the drive maxes out at 42,000 random read IOPS and 52,000 random write IOPS.
The drive will come in the 2.5” form factor, but is 9.5mm thick (meaning it will not work in all notebooks). Reportedly, Intel has redesigned the casing to include a schematic/blueprint graphic alongside the Intel logo.
Intel rates the 180GB 335 series SSD at 1.2 million MTBF and is warranted for three years. The drive can currently be found online for around $180, making it right around the $1/GB mark. Interestingly, the larger 240GB model is currently retailing for around $195. Therefore, if you can spare the extra $15, the 240GB model is the better deal.
Subject: Storage | February 4, 2013 - 02:09 PM | Jeremy Hellstrom
Tagged: kingston, ssdnow v300, SF-2281 controller, mlc
Kingston's updated SSDNow V300 uses 19nm Toshiba Toggle NAND and the SandForce 2281 controller with some unspecified enhancements. Kingston has made a name for themselves in the SSD market for offering an easy and fully explained upgrade path for users who are unfamiliar with changing hard drives. The updated version is no different, included is an external enclosure for the SSD and a USB cable to allow users to easily copy over any data which is of great benefit for users who don't have several enclosures laying around. [H]ard|OCP's testing showed that even though this is a value priced drive, it also performs better than a lot of the competition.
"The Kingston SSDNow V300 is yet another value-oriented SSD in Kingston's wildly successful line of mainstream solid state drives. With the pressures of TLC SSDs squeezing the value market we take a look and see if a standard MLC SSD with 19nm Toshiba Toggle NAND and an SF-2281 processor can keep up with the changing times."
Here are some more Storage reviews from around the web:
- Kngston SSD Now 300V 120GB Review @ OCC
- OCZ Vector 256GB @ Bjorn3D
- The Full Intel SSD 525 Review: 30GB, 60GB, 120GB, 180GB & 240GB Tested @ AnandTech
- Intel SSD 525 @ AnandTech
- Plextor M5 Pro Extreme SSD @ SSD Review
- Icy Dock FlexCage MB973SP-B and MB974SP-B SATA Review Update @ Hi Tech Legion
- SanDisk Ultra Plus 256GB @ Tweaktown
- Toshiba THNSNF256GCSS 'Thin Sniff' 256GB @ Tweaktown
- Intel DC S3700 SSD Review; Home User Edition @ Hardware Canucks
- OCZ Vector 256GB @ Funkykit
- Transcend SSD320 & SSD720 (256GB) @ AnandTech
- MyDigitalSSD SMART & BP3 mSATA SSD @ AnandTech
- Taking a look at MEGA (beta) - cloud storage, done safely? @ Tweaktown
- G-Technology G-DRIVE 4TB Professional High Performance External HDD Review @ NikKTech
- 4-Bay NAS from Synology: Three Models Reviewed @ X-bit Labs
- QNAP TS-669 Pro @ CoD
- RaidSonic ICY BOX IB-RD2121StS 2x2.5" to 3.5" HDD/SSD RAID Converter Review @ NikKTech
- ADATA DashDrive Elite HE720 External Drive @ Benchmark Reviews
- Kingston DataTraveler Hyper X Predator 512GB USB 3.0 Flash Drive @ SSD Review
- Silicon Power Marvel M60 32GB USB 3.0 Flash Drive Review @ ModSynergy
- Kingston DataTraveler Ultimate 3.0 G3 64GB USB Thumb Drive @ TechwareLabs
- Kingston DataTraveler HyperX PREDATOR 512GB USB 3.0 Flash Drive Review @ NikKTech
Introduction, Specifications and Packaging
It has been just under a year since Intel released their 520 Series SSD, which was their second 6 Gb/sec SATA unit. Sporting a SandForce controller, that release helped bridge a high speed storage gap in their product lineup. One year prior, Intel dabbled in the mSATA form factor, releasing a 310 Series model under that moniker. The 310 showed up here and there, but never really caught on as the physical interface was admittedly before its time. While in hindsight it was a very good way to go towards establishing a fixed standard, the industry had already begun fragmenting on these smaller interfaces. The MacBook Air had already launched with a longer 'GumStick' shaped SSD, and Ultrabook makers were following suit with units that were physically identical yet not pin-compatible with that used in the Apple product.
The Intel 520 Series SSD helped push Intel into 6Gb/sec SATA territory.
It's taken a while for the industry to favor defragmentation (pun intended) enough for mSATA to really start catching on, and that time appears to be nearing with Intel's launch of the SSD 525 Series:
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