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SSD news - April 2014

SSD history
more articles about SSDs
what changed in SSD year 2014?
DWPD in in industry leading enterprise SSDs
SSD endurance myths and legends - now in 3D
Decloaking hidden segments in the enterprise for rackmount SSDs
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Skyera begins volume shipments

Editor:- April 30, 2014 - Skyera today announced volume shipments of its petabyte class skyHawk rackmount SSD - which had previously been sampling at select customer sites.

Editor's comments:- Skyera's direct impact on competitors in the next few months will come less from the volume of business they can take (because ramping up a new systems business sucks up support resources and cash and Skyera is starting from a low base).

Rather - I think Skyera's impact will be felt more in the type of questions it will ignite between users and the salespeople they talk to in other storage companies about the price per terabyte and the amount of rack space it takes.

The valid answer to some of these user questions will be - our systems cost more and take up more floor space because they are much faster and can also satisfy a different class of needs.

The unsaid answer - in a majority of cases will be - our systems cost more because we don't understand how to do what Skyera does - because we don't really understand flash and how to make it work for us in the same way.

See also:- Exiting the Astrological Age of Enterprise SSD Pricing


SanDisk samples 4TB SAS SSDs

Editor:- April 30, 2014 - SanDisk today announced it is sampling 2 major additions to its range of SAS SSDs.
  • A new 4TB model (2.5") - called the Optimus MAX - rated at 1-3 DWPD - which is the industry's first 4TB 2.5" SAS SSD.
  • A new range of 12Gbps SAS SSDs - called the Lightning Gen. II.

    Available with a spread of R/W optimized characteristics the high end model (Lightning Ultra Gen. II) has R/W speeds upto 1GB/s and / 600MB/s respectively, upto 800GB capacity and is rated at 25DWPD for 5 years.
Editor's comments:- 2007 was the first year in which you could buy a SATA SSD with exactly the same storage capacity as the highest capacity hard drive. That capacity milestone was at the 1TB level.

But it was only for exceptional embedded projects in which you would choose to make such a substitution 7 years ago - not only because of the price of flash SSDs - but more significantly because - if you were going to spend that much money on flash - there was a much better user value argument to be had for most enterprise applications - by buying a faster SSD with a PCIe interface instead.

In recent years - we've seen the capacity of 2.5" SSDs creeping upto and reaching 2TB - but there hasn't been much of a general market appetite for this type of product before now.

So the majority of enterprises still use hard drive arrays for low cost capacity - even when these have flash acceleration taking place in the apps servers or in SAN facing caches.

The imminent availability of 4TB 19nm nand flash SSDs as affordable components in enterprise arrays will enable data architects to design much simpler and cleaner systems - with less dependence on so many intermediate caching levels.

That compaction of runaway distributed caches will result in more consistent performance and the simplification of data integrity and hot recovery schemes when (inevitably) hardware modules fail.

As to the 12Gbps Lightnings? - That's a catch up exercise.

See also:- SAS SSD market timeline


the Top SSD Companies in Q1 2014

Editor:- April 30, 2014 - StorageSearch.com today published the 28th quarterly edition of the Top SSD Companies List based on metrics in Q1 2014. Newcomers to the list included Maxta and A3CUBE and there were significant movements in the top 10 companies. ...read the article


Samsung in volume production of enterprise TLC SATA SSDs

Editor:- April 28, 2014 - Samsung has taken the value engineered enterprise SATA SSD to a new dimension today by today announcing volume production of a 3bit 10nm class nand flash SSD - the PM853T - (240GB, 480GB and 960GB capacity options) which enables 530/420MB/s R/W and upto 90,000 / 14,000 R/W IOPS.

Samsung says the PM853T delivers a 30% increase in manufacturing efficiency compared to SSDs that use traditional 2-bit MLC NAND flash components.

Editor's comments:- the press release was missing an essential piece of data for designers - which is the DWPD endurance rating.

I asked about that - and the data I got - converts to a figure close to 0.4 DWPD for 5 years.


FPGA as ASIC - efficiency perspectives

Editor:- April 28, 2014 - The merits of FPGA versus ASIC in SSD controllers comes up from time to time on these pages.

The clearest analysis of the design efficiency advantages of FPGA versus ASIC (based on silicon footprint) that I've seen - along with a useful historic perspective - can be seen in this article - FPGA as ASIC Alternative: Past and Future by Zvi Or-Bach, President and CEO of MonolithIC 3D .

Zvi says - "Research shows that an FPGA can is approximately 30x larger and between 3 to 5 times slower on average than a standard-cell implementation. This high programmability overhead suggests that many of the current ASIC designs cannot be replaced by an FPGA design. Consequently, when advanced technology NRE is too high, the alternative is to use older node ASIC technologies. Since the number one driver for cost of mask-sets and NRE is the associated capital, the cost of older technologies goes down dramatically over time. The 30x area penalty means that one could use a node that is 5 generations older and have a competitive solution when compared to current node FPGA." ...read the article


Fusion-io says - all our sales people are now ready to sell systems - and we don't regard NV DIMMs as a threat to our PCIe SSD business

Editor:- April 24, 2014 - Fusion-io yesterday reported revenue up 14% yoy to $100 million but losses have grown too - to $30 million for the recent quarter.

Editor's comments:- Here are some interesting points which emerged from the Q&A which followed the investor conference call.
  • Rackmount systems sales? - FIO declined to provide numbers. But the company said it has over 300 VARs signed up and recently got to the point where all its own direct sales people were clued up on selling systems.
  • Threat to FIO's PCIe SSD business from SanDisk's ULLtraDIMMs? (memory channel SSDs).

    Lance Smith said - he thought NV DIMMs were a validation of what FIO had already done - but he regarded NVM DIMMs (in their current form) as a niche market. He went on to say - "We don't believe that DDR-3 and the memory interface is the bottleneck. It's about managing the nand and getting the best performance out of the nand."
  • Re 3rd generation iodrives? - These are being qualified. FIO's 3rd generation products - and the 5th generation of nand flash geometry used by the company - will be available in the next month or so.
  • Re looking back at the last 11 months since becoming CEO?

    Shane Robison said "The thing that's most encouraging to me is our ability to attract truly world class talent..."
...Later:- After Fusion-io was acquired - the new management at SanDisk decided that some aspects of Fusion's fledgling enterprise rack business were more important than others. For more about this see - What will SanDisk really get from Fusion-io?

See also:- fractionalization and segmentation in the enterprise rackmount SSD market


OCZ launches new desktop PCIe SSD

Editor:- April 24, 2014 - OCZ today launched a new gen 2 PCIe SSD for high performance desktop uses such as gaming and workstation. The Linux and Windows compatible RevoDrive 350 (240GB, 480GB, and 960GB capacity models) has R/W speeds upto 1.8 / 1.7 GB/s and 140,000 4K random write IOPS.

Editor's comments:- a key difference between this type of prosumer desktop SSD and the kind you need in intensive 24x7 server slots is endurance.

OCZ says the RevoDrive 350 is rated at "upto 50GB of host writes per day for 3 years". That may be OK for a desktop - but if you translate that into enterprise jargon - DWPD for 5 years - it translates into 0.1 - which is 40x lower than a typical enterprise PCIe drive.


LSI's Nytro works with BPE in SQL Server 2014

Editor:- April 24, 2014 - A lot of SSD companies have announced that their products are compatible with Microsoft's SQL Server 2014. Another noteworthy company in that category is LSI - who today announced that its Nytro flash accelerator cards (PCIe SSDs) work with the new Buffer Pool Extension feature.


I just wanted solid-state memory at a cost per bit as low as a CD-ROM or a DVD - said Contour Semiconductor's founder - whose company yesterday named a new CEO

Editor:- April 23, 2014 - Contour Semiconductor is a new (long time in development) company which I only learned about this week via a couple of my linkedin contacts.

You might want to learn more about them too.

Why's that?

"Contour's new chip technology has the potential to be every bit as disruptive to the solid state flash market as flash was to hard disks drives" says Saul Zales who was named Contour's new CEO in a press release yesterday.

Saul Zales is well qualified to judge those markets - as his background includes flash or SSD related business development at some well known SSD companies - namely Fusion-io and Intel.


Pure Storage's funding coffers fattened up to nearly $0.5 billion

Editor:- April 23, 2014 - Pure Storage today announced it had raised another $225 million in funding - bringing the total in all rounds to $470 million.

Editor's comments:- One of Pure Storage's many competitors - Nimbus - whose CEO has taken a different approach to funding (so far) - this week published an unflattering side by side features comparison between the 2 company's flagship rackmount SSDs.

See also:- rackmount SSD trends, VCs in SSDs


Violin enters the fast HA SSD apps server market

Editor:- April 22, 2014 - Violin Memory today announced general availability of its Windows Flash Array (WFA) - a 3U new fast 10GbE high availability SSD accelerated apps server (64TB raw flash capacity) - for Microsoft enterprise software environments (with unique software developed by Microsoft) which opens up a new market opportunity for Violin and which enables it to compete head to head with vendors who sell enterprise servers accelerated by PCIe SSDs or memory channel SSDs with its own proprietary solution - which integrates servers preloaded and configured with Windows Storage Server 2012 R2 with fast RDMA memory access to an internal fabric of Violin VIMM flash arrays.

Editor's comments:- This product announcement is the nexus of several past business strands for Violin and also I think marks another major reset point for the company in terms of its positioning and business potential in the SSD market.

Here are a couple of things for you to be thinking about this new product.
  • Violin was already one of the leading companies in the rackmount SSD market before this product line. Its previous products provided various ways to accelerate apps by connecting their storage to existing servers.

    With this new product - if you're using enterprise apps from Microsoft - Violin can now provide the servers too. And the fast flash is already integrated in the server blades with a low latency software connection into server RAM via custom VIMM acceleration code written by Microsoft.

    While not as scalable as some of the new vendors in the general cloud / SDS market (Violin's new system currently scales to 4 arrays) - Violin's box will be one of the 2 or 3 fastest boxes in the market today.
  • Look Ma - no PCIe SSDs!

    Less than a year after Violin made its late entry into the PCIe SSD market (in January 2013) the company's new management in 2014 was saying that it would soon exit that business.

    That exit strategy made sense even before today's announcement - because it's a different type of business. - Violin was late to market - and PCIe SSDs requires different technical and marketing support than systems. (You saw a mirror image of some of those problems with Fusion-io's clunky boostrapping of itself into also being a systems company last year.)

    In Violin's case - seen from the company's business perspective - with its WFA product - you can now see why decoupling from the PCIe SSD market makes even more sense than it did before for 2 more reasons.

    1- If Violin isn't using its own PCIe SSD form factors in its own servers (but using its proprietary VIMMs instead) then why should anyone else use them?

    2 - Another reason in the balance is that the WFA will compete directly with server makers who are in the market for PCIe SSDs. If Violin found it hard trying to sell PCIe SSD to server makers before - the company's entry into the SSD server market would shrink such design prospects even more.
  • A new style of marketing.

    When I spoke last week - ostensibly about the WFA product briefing - to Eric Herzog, Violin's new CMO - I started by repeating something I'd already said to him earlier by email.

    Violin's big Achilles heel in recent years in my view had been its marketing.

    Since September 2011 (long before the company's IPO) I had been saying to readers on these pages as directly as I could that Violin's marketing communications and advertising was not fit for purpose.

    I told Eric that I regarded his arrival in the company as a way to change all that.

    He told me that he agreed - and had already taken steps to correct a lot of past obvious mistakes.

    On the business development side he said the new management team at Violin included a strong hybrid of skills in both big enterprise companies and startups.

    On a personal level - having left a lot of money on the table from his previous post in coming to join Violin - he believed there was a great opportunity for Violin to be much more successful than it has been upto now. And a part of what he would be doing is ensuring that the company communicated more clearly - in the same kind of language that its customers used - what Violin was all about and how its solutions made good business sense.
Going back to the WFA product launch. I think the WFA is the most significant new product direction for Violin since the company switched away from using DRAM in its rackmount SSD arrays - and over to using flash (in November 2008)."


Micron ships 2DWPD SATA SSDs

Editor:- April 22, 2014 - Micron today announced that it's shipping new SATA SSDs for the enterprise in 1.8" and 2.5" 7mm high form factors. The M500DC SSDs - based on 20nm MLC NAND, and with capacities upto 800GB are fast-enough 65K / 24K R/W IOPS (4KB) rated at 1 to 3 DWPD for 5 years.

"System administrators are realizing that there is a need for an SSD that delivers more enterprise-features than a client drive at a more affordable price than most enterprise drives," said Greg Wong, founder and principal analyst at Forward Insights. "Products such as Micron's M500DC SSD offer data centers the optimal balance of enterprise class features, performance and price for demanding 24/7 enterprise workloads."

Editor's comments:- the reason that flash memory makers get excited by such mundanely performing SSDs - is that for every terabyte of fast sexy SSD they can sell in the enterprise market there's another 2 to 50 more terabytes of "value" class SSD capacity they can sell too - if they can get the price, power consumption and reliability right (and not over specified).


if memory channel SSDs cost nothing - would there still be a market for PCIe SSDs?

Editor:- April 17, 2014 - StorageSearch.com today published a new blog - memory channel SSDs versus PCIe SSDs are these really different markets? - which revisits (from a current perspective) some of the key questions I posed a year ago about Memory Channel SSDs.

Are these really different markets? And - at the boundary limits of price - what are the different application roles - where one type of SSD is better than the other? ...read the article


can I still buy WhipTail arrays? - blog by StorageMojo

Editor:- April 17, 2014 - In case you hadn't noticed - Cisco hasn't exactly been providing a rolling news narrative on what it's been doing with the products and technologies it acquired from rackmount SSD maker - WhipTail.

IBM was similarly quiet for a year after it acquired Texas Memory Systems - although as IBM later revealed (earlier this year) - they had been busy selling a lot of those systems - and adding some improvements to make it blend in better with the family portraits.

In the past 10 years acquiring an SSD company has changed from being a rarified novelty. And in that time we've seen that what companies do after they've acquired an SSD company varies a lot.

The other end of the spectrum (compared to Cisco and IBM) when it came to post acquisition news noise - was LSI with SandForce, and maybe also SanDisk with SMART.

Returning to WhipTail, however... this week Robin Harris (StorageMojo) muses on what's happening now in the sales arena with WhipTail's arrays in his blog - EMC gets the Cisco Whiptail lash


SanDisk's enterprise SSD revenue more doubles YOY

Editor:- April 16, 2014 - SanDisk today announced $1.5 billion revenue for the quarter ended March 30.

In a related statement - Sanjay Mehrotra, president and CEO stated "...Combined client and enterprise SSD sales accounted for ($423 million) 28% of our first quarter revenue, with enterprise SSD revenue more than doubling on a year-over-year basis. Our expanded SAS SSD portfolio has enabled us to further strengthen our market position, and it has been the primary contributor to our enterprise SSD revenue growth."


BiTMICRO has new VP of Engineering

Editor:- April 16, 2014 - It had been 9 months since I last saw a news announcement from BiTMICRO. But I heard today that the company recently announced that Bharadwaj Pudipeddi has joined the company as VP of Engineering and Lead Architect.

Among other things - Pudipeddi's past design roles in notable SSD companies include 2 years at Violin Memory.


look who's thinking like an enterprise systems SSD company now?

Editor:- April 15, 2014 - I've been having new product or new business briefing conversations for over 20 years. But 3 weeks ago a new record for brevity (when it comes to sticking to the time allocated to discussing the planned topic) was established in a conversation I had with SanDisk. Because our time ran out - and we never even got as far as page one of the briefing document at all. ...see what we did talk about


OCZ betas the next incremental release of its SQL accelerator software

Editor:- April 10, 2014 - OCZ today announced it's inviting enterprise SSD users to participate in a 1.5 Beta Program for the next release of its ZD-XL SQL Accelerator software.

OCZ says - ZD-XL 1.5 enables DBAs to unleash the full power of SQL Server 2014 features, such as flash Buffer Pool Extension (BPE) support, that enables database pages to be accessed faster by loading them directly from flash.


Crocus is pleased by initial patent ruling re - magnetic semiconductor memory block efficiency

Editor:- April 10, 2014 - Crocus Technology today said that the US Patent and Trademark Office has determined that there is a "reasonable likelihood" that it will cancel all or part of patent 6,980,469 which had been earlier awarded to Spin Transfer Technologies (STT) - due to prior art considerations.

See also:- SSD efficiencies, Are you ready to rethink RAM?


Apacer samples water resistant industrial mSATA 3 SSDs

Editor:- April 10, 2014 - With the launch of 2 new devices which are now sampling - Apacer has added SATA 3 performance capabilities and DEVSLP power frugality to its range of mSATA SSDs which are aimed at the industrial SSD market - and can be custom coated to meet IP57 water-proofing and dust-proofing.

Apacer's new SSDs - the mSATA A1 and SFD 18S6 - (available in MO-300 or MO-297 form factors respectively) use 1x nm toggle DDR 2.0 NAND flash and are available in either SLC or MLC versions The MLC models have 475/430MB/sec R/W and upto 65K IOPS and capacity upto 256GB.


Cactus adds write disable switch to industrial CFast

Editor:- April 10, 2014 - Cactus Technologies today announced that it has introduced a new security option - of having a physical write protect switch - in its 900S series of industrial SLC CFast SSDs.

It works like this. When the write protect switch is in the disabled position, the CFast card reads and writes as normal. When the switch is enabled, the card will read as normal, but all write attempts are ignored. Data already stored on the card is safe from overwrite.

"This write protect feature has already been successfully implemented in the gaming, military and other markets" said Sai-Ying Ng, President of Cactus Technologies.

See also:- SSD Security


Micron's HMC controller team win design award

Editor:- April 7, 2014 - Micron today announced that one of its design teams has been named "design team of the year" by EE Times and EDN for the design work - done in collaboration with Altera (FPGA pioneer) - which led to the industry's first working Hybrid Memory Cube (HMC) controller.

"Micron and Altera have been collaborating on HMC technologies since 2009 and are very proud of the interoperability work that has led to the industry's first demonstration of a fully functional HMC controller," said Tom Eby, VP of Micron's compute and networking business unit.

See also:- RAM news, SSD glue chips, SSD controllers


OCZ has new distribution partner

Editor:- April 7, 2014 - OCZ today announced that its entire range of SSDs (enterprise and consumer) will be available in the US distributed by Private Label PC - which already supplies over one million units of storage products per quarter to its customer base.

Editor's comments:- Private Label PC offers 11 SSD brands and an additional 4 flash memory brands in its product line card.


what's a good DWPD for a SAS SSD?

Editor:- April 7, 2014 - SAS SSDs - get honorable mentions in a new article here on StorageSearch.com - what's the state of DWPD? - which gives a snapshot of the endurance figures being quoted in industry leading enterprise SSDs. ...read the article


what's the market for Plextor's PCIe SSD?

Editor:- April 7, 2014 - I asked Plextor's virtual marketing representative in the US - Andrew Erickson at Alaniz Marketing to tell me more about Plextor's thinking about routes to market for their entry level (Gen2) PCIe SSD market offering - the M6e.

He said - "The M6e is marketed directly to consumers as an end-user upgrade and mostly via newegg and major e-tailers."

Andrew went on to say - "Plextor is definitely moving into the enterprise space and we're expecting to see a couple of read intensive and multi-use ssd products later this year. It sounds like some of the enterprise firmware advances may already be evident in the M6e - though it's not being marketed in that way. I have seen some Plextor drives sold in high end gaming rigs, but I'm not aware of current plans to sell OEM at this time."


Skyera is hiring sales and marketing people

Editor:- April 3, 2014 - Skyera today said it plans to double its sales and marketing employee count in the near future.

Editor's comments:- Out of curiosity I wondered what kind of ad I'd see if I went onto linkedin and searched for "Skyera SSD". But instead of seeing any job ads from enterprise SSD companies - I just saw an ad for - custom logo branded USB memory sticks.


Are you ready to rethink RAM?

Editor:- April 2, 2014 - We've all got used to the idea that a series of revolutions has been playing out in the enterprise server market centered around flash SSDs and in that context the developments in DRAM technology have sounded reassuringly boring and predictable.

But are you ready to rethink enterprise DRAM architecture too?

The state of blue sky thinking about enterprise DRAM - what is it really for? - and the changes that could lead to - are discussed in a new blog on StorageSearch.com ...read the article


Fusion-io demonstrates life and capacity amplification effects of combining 2 software ingredients

Editor:- April 2, 2014 - In a benchmark demonstration this week Fusion-io showed the combined advantages of using NVM compression in conjunction with its Atomic Writes APIs in SkySQL environments. The results indicate that:-
  • 2x as much data can be stored on the same flash media - while giving similar performance and latency to the uncompressed case with legacy software, and
  • using compression and the new APIs - reduces write traffic and improves endurance limited operating life by a factor of 4x
Editor's comments:- compression has been used as a secret invisible endurance helper inside enterprise flash SSD systems (and as a way to speed up performance and housekeeping functions such as garbage collection) starting in 2007 with MFT flash management software from EasyCo.

From 2009 onwards - invisible compression speedup and reliability boosting became widely adopted in the industry - as they were both intrinsic parts of every SSD controller shipped by SandForce.

WhipTail was the first enterprise SSD array vendor I knew of to offer inline time compression as an explicit feature which users could turn on or off - to increase usable virtual capacit. That was in February 2009 - and James Candelaria (who at that time was WhipTail's CTO) mentioned this as an attribute in his SSD bookmarks for StorageSearch.com readers in September 2010.

However, in a later conversation (January 2012) with Cameron Pforr (who at that time was WhipTail's President and CFO) - Cameron told me they were no longer emphasizing compression because it led to latencies which were too long to be competitive - and instead they were focusing on performance.

Since those days many leading SSD array makers have used compression to offer tactical advantages in their products - particularly in cost sensitive markets like iSCSI. And compression and more efficient software are just some of many ingredients I identified in last year's article better thinking inside the SSD box.

To sum up - Fusion-io's demonstration this week simply confirms what anyone who knows their product line well would have already expected.

See also:- SSD compression - editor mentions on StorageSearch.com


Cactus looks at the thorny issue of embedded flash TCO

Editor:- April 2, 2014 - Cactus Technologies today published a blog - Solid State Storage Total Cost of Ownership versus a Really Low Price Today - aimed at designers in industrial markets - which discusses 4 sources of cost they should consider when selecting an SSD.

When looking at eol considerations - the author Steve Larrivee - warns that although designers may be counting on being able to delay requalifications by mining obsolete SSDs as unsold inventory from channels and brokers "for a considerably higher price... this introduces the possibility of counterfeit parts as well."...read the article

Editor's comments:- Although these raw headline factors are the same for designers in all industries - the weightings are often different in embedded markets due to the smaller sizes of equipment production runs - which means that design-centric related requalification costs are more significant as a factor in each system shipped than is the case in higher volume markets.


why aren't your readers looking for our SSDs?

Editor:- April 1, 2014 - I got an email this morning from a marketer at an SSD company which I won't name here to avoid embarrassment..

He said he'd seen the Top SSD Companies series - and wondered what his company might have to do - in order to appear in it.

I recognized the company name.

By my pro-active research they've had a minimalistic listing here on StorageSearch.com since they entered the SSD market in 2010.

But to steer the conversation to a measured start - I looked at my incoming emails - and discovered that his company had never before today contacted me about their SSDs, and had never been mentioned in an email from an SSD reader. (Which adds up to a lot of SSD emails.)

So I guess my answer is this.

If an SSD company has never bothered to reach out in the past to millions of my SSD readers - then don't expect those same readers to make looking for your SSD products their top priority.

This is perfectly serious - and not an April fool story.

I've been geting emails like this from SSD marketers every month for the past 7 years - since 2007 - which is when the Top SSD Companies list began.

See also:- Bad marketing is one reason that 90% of the enterprise SSD companies which you know have no good reasons to survive
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new whitepaper from Diablo looks at the "drawbacks of traditional PCIe SSDs"
Editor:- April 22, 2014 - Diablo Technologies today published a white paper Enterprise Storage Performance: it's all about the Architecture (and not just the interface) (pdf)
graph from the white paper
This paper presents Diablo's perspective - as the creator of Memory Channel Storage (an architecture which supports terabyte class flash SSDs in unmodifed DDR-3 DRAM DIMM sockets and runs within those safe operating electrical power envelopes).

The article looks at the measured performance weaknesses of some specific (but unnamed) PCIe SSDs with respect to their measured performance asymmetries under various loads and then attempts to generalize those weaknesses as part of an argument that MCS is a better solution than PCIe SSDs - because MCS is more scalabe and doesn't suffer from the same kind of architectural bottlenecks.

Editor's comments:- This paper from Diablo reminds me of the type of comparisons between different types of PCIe SSDs (and their sensitivities to different workloads) which was one of the pivotal marketing points of difference which Virident used to hang their reputation on in the years leading up to its acquisition by HGST. (Although as I often reminded readers at the time - Virident wasn't the only company with that kind of array scalability or no-compromise performance.)

Going back to Diablo's white paper - for me - like many vendors written papers - it's good and bad in different parts.

The best bit is the middle - in which you get a reminder - from measured results that fast SSDs with similar capacities can behave differently.

The worst part in my view is the attempt to link these comparison results to a general conclusion about the merits of MCS versus PCIe SSDs.

Because I think the architecture of the controllers on the flash side of the SSDs plays such an important part as too does the software. And that's still just a small part of the picture.

My considered view is that Diablo's extrapolation towards a general market conclusion from one selected comparison example is not merited by the evidence presented in this article.

And while I am convinced of the benefits of Diablo's MCS architecture - and what it can do differently and better compared to PCIe SSDs - I think this particular paper isn't the best case they could argue.

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Popular white papers and PDFs in April 2014
Editor:- April 30, 2014 - I'm not a great fan of PDFs - but there are some on the mouse site.

Here are some of the most popular PDFs which StorageSearch.com readers have been seeing this month.



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"I think the WFA is the most significant new product direction for Violin since the company switched away from using DRAM in its rackmount SSD arrays - and over to using flash (in November 2008)."




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Decloaking hidden segments in the enterprise
Editor:- May 28, 2014 - StorageSearch.com today published a new article - Decloaking hidden segments in the enterprise for rackmount SSDs

Some of the world's leading SSD marketers have confided in me they know from their own customer anecdotes that there are many segments for enterprise flash arrays which aren't listed or even hinted at in standard models of the enterprise market.

Many of these missing market segments don't even have names.

Hey - that means SSD-world is like a map of the US before Lewis and Clark.

If you're a VC should this make you anxious or happy?

If you're a user - maybe that's why no one is delighting you in the way you think you deserve.

That's what led me to write my new article.

See also:- rackmount SSDs, SSD silos, market research



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