Storage Fri, 21 Oct 16 12:20:28 -0600 Storage en-CA CFast card reverse engineering Tue, 14 Oct 2014 06:59:51 -0600 Pedro_Miguel 11547@/talks/discussions sata 2.5 hard drive connected to atomos cfast usb card reader today i was able to conect an sata 2.5 hard drive to a atomos cfast usb card reader, just because the data transfer pins are the same as a sata drive, so easy. now is simple to plug your sata drives to Atomos ninja star, just make and female to female sata cable . and no more exepensive cfast cards, just unexpensive sata 2.5 hard drives.

Power just add a sata power plug , or make an female to female sata power cable.

quick formatting vs. full formatting for video editing Sat, 17 Sep 2016 17:01:48 -0600 matt_gh2 15747@/talks/discussions Question for my fellow PVers. What are your thoughts on the benefits or lack thereof on doing a full format vs. a quick formatting. I bought a new 6tb external hard drive that is currently in NTFS. I'm going to reformat it Mac OS extended journaled. Does it make a difference if I do quick format vs. Full formatting? (It will be used for video editing and will have the video footage and audio files stored there.) Thanks, Matt

CFast storage Tue, 08 Apr 2014 18:18:37 -0600 mrbill 10110@/talks/discussions The new ninja star looks like a great way to get 10 bit 422 1080p out of the GH4. It uses type 1.0 cfast cards, and having googled myself stupid, I still can't find a source for the 256gb cards mentioned in the interview at nab. Anyone got any ideas for a supplier? Thanks.

CFexpress - another type of fast cards Wed, 07 Sep 2016 10:28:56 -0600 Vitaliy_Kiselev 15674@/talks/discussions

The CompactFlash Association (CFA) announces the CFexpress Family of high-performance removable storage based on PCIE® and NVM Express®.

CFA has developed high-performance removable cards standards for the last 21 years with the popular CompactFlash®, CFast®, and XQD® formats. The CompactFlash Association was formed in 1995 as the initial digital film format and continues to serve professional imaging and industrial markets where high performance and high-quality recording media is essential for high-speed capture and high-speed transfer into the workflow.

CFexpress is the next evolution in an open standard format for a broader set of applications, such as professional imaging, personal computing, servers, IoT and industrial. CFexpress differs from prior CFA standards in that CFexpress is a specification spanning multiple form factors and performance levels to match various market requirements while maintaining the same electrical/physical interface and memory/storage protocol. The new CFexpress specification is under development within the CFA CFexpress Working Group.

CFA’s goals for the CFexpress family are:

  1. Unify the ecosystem around a removable storage specification that has longevity in the market
  2. Provide a platform that scales with performance increases in the PCIE® interface
  3. Leverages the technologies and skillsets of the larger volume compute markets
  4. Seamless compatibility with the capture ecosystem and workflow tools.

CFexpress leverages the PCIE® physical interface for higher performance based on the high-volume compute industry. PCIE® CFA’s objective is to specify multiple removable storage devices that spans from two lanes architecture all the way up to eight lanes. With the current PCIE® Gen 3 delivering maximum theoretical interface speeds of 1.0GB/sec per lane, CFexpress would enable theoretical sequential speed of up to 8GB/s.

CFexpress also utilizes the low latency NVM Express® memory/storage protocol across all of the form factors. This enables compatibility with a broader set of ecosystem components, such as controllers, OS, capture devices and workflow modules. In imaging, compute and industrial applications, the use of PCIE® /NVM Express® enables access to wide range of open standard platforms consisting of mature and proven drivers. In addition, the new CFexpress format also enable easy compatibility with the Thunderbolt® interface which is also based on PCIE®. Actual CFexpress products will vary in performance based on market requirements and protocol overheads.

Professional video data rate requirements are growing at an exponential rate exceeding the capabilities of existing open standard formats. 4K RAW video at 30fps requires 400-500MB/sec of sustained performance not including any overhead to guarantee performance over the entire recording media. 4K RAW video at 120fps requires 1,600-2,000MB/sec. 4K RAW video at 240fps requires 3,200-4,000MB/sec. Even in High-Quality I-Frame compression formats, the data rates quickly exceed 1.0GB/Sec at high frame rates.

  • PCIE® Gen 3 Interface Provides a max theoretical interface speed of 1.0GB/sec per lane of PCIE®. This speed enhancement enables a new generation of higher performance cards to meet requirements for professional video recording.
  • Family of Form Factors Provides multiple form factors to address multiple market segments with a unified physical interface and memory/storage protocol. 2 lane and 4 lane form factors will be the initial focus but anything from 1 lane to 8 lanes is possible. This provides a range of up to 8GB/Sec with PCIE® Gen3.
  • NVM Express® A storage interface designed from the ground up for NVM storage. The NVM Express protocol features fixed length commands, an efficient queuing model, and very low non-cacheable PCIe accesses per command, delivering reduced I/O overhead and performance improvements in comparison to legacy storage device interfaces. NVM Express® is gaining popularity across various flash-based storage solutions and has driver support on all leading OSs.

Mr. Tom Ando of Canon and CFA Co-Chairman of the board said; “As the Co-Chairman of the CompactFlash Association I am pleased and excited to introduce CFexpress as CFA’s continues the tradition of performance leadership. The higher performance provided by CFexpress formats will further increase the capabilities and value for photographers, videographers, cinematographers, industrial, and compute applications. I am very pleased and proud to see the CFA creating standards that address new market requirements.”

Host and card manufacturers will be able to leverage the compute industry’s investment in PCIE® and NVM Express®. Media manufacturers will be able to leverage high volume solid state disk (SSD) controller technology to serve the high performance requirements of this market. The new format will have VPG (Video Performance Guarantee) capability with new VPG profiles at every increases performance levels. CFA’s goal for CFexpress is the development of a standard that can span many market segments and provide a stable and consistent format to fully leverage the industry’s R&D investments and less churn in the market of standardized and proprietary recording media formats.

Mr. Koichiro Kawamura of Nikon and CFA Co-Chairman of the board said; “As the Co-Chairman of the CompactFlash Association I am also pleased and excited to introduce CFexpress. The specification is a family of form factors that can serve many market segments with a unified physical interface and unified memory/storage protocol. We are excited with the vision that CFexpress will unify the imaging and industrial ecosystems around formats that are easily compatible with the computing markets. CFexpress represents a unique opportunity to unify the market around truly open standard formats.”

CFA invites host and media companies interested in supporting the new CFA specifications to also join CFA as members. Membership in the CompactFlash Association enables participation in CFA CFExpress Working Group and access to new specification before they are available for purchase by non-members. More information can be found at

Copying mac hard drives with Windows PC Tue, 23 Aug 2016 18:41:44 -0600 matt_gh2 15571@/talks/discussions I have a unique situation. I will be copying the contents of one mac-formatted hard drive onto another empty mac formatted hard drive. But at the location I'll be doing this, I'll only have access to a Windows PC computer. Can I successfully plug both mac-formatted hard drives into the Windows PC and do a drag and drop copy of all the files from one mac-formatted hard drive to the empty mac-formatted hard drive?(The hard drive, with new files copied to it, will be used with a mac computer a few days later at separate location.)

Thanks guys.

GH4 Memory Cards. What works and what doesn’t? Tue, 29 Apr 2014 12:22:28 -0600 mpgxsvcd 10276@/talks/discussions I have a GH4 and the following 7 memory cards. Listed in order of their theoretical speed. Some of these cards have failed with the “Motion Recording was cancelled due to the writing speed of the memory card” error message in the GH4 and some have not. If they failed then it was always in the stills mode while recording 1080p @ 60 FPS 200 mb/sec ALL-I video.

These cards all failed at some point

  1. Eye-Fi 8 GB Class 6
  2. Eye-Fi 16 GB Class 10
  3. Transcend 32 GB Class 10
  4. SanDisk 8GB Extreme SDHC 30 MB/sec Class 10
  5. Transcend 64 GB SDXC UHS-I Class 3(Gold Plated Label)

These cards have never failed despite my best efforts to make them fail

  1. Transcend 32 GB SDHC UHS-I Class 1
  2. PNY 64 GB 90 MB/sec UHS-I Class 1

Please post your experiences with different memory cards and the GH4. Please only comment if you have the GH4 and have tried the memory card with it. No comments like “This memory card is better so it must work”. Just actual tests that you have performed yourself.

Back up solutions for video on the road Tue, 21 Jun 2016 19:43:27 -0600 mojo43 15262@/talks/discussions I am looking for suggestions on cheap and tiny backup solutions on the road that have high enough transfer speeds. Currently I bring my laptop and use usb 3 to transfer typically 2 64 cards a day. I have tried to use my android tablet to do the transfer with a otg cable which works, but at 2.0 speeds it takes a hour per card which is too much for me to wait up for after a long day. Does anyone have any suggestions? I searched the forum, but only found threads from years ago...

Thanks in advance...

SOS Hard Drive Failure - Advice needed Fri, 19 Aug 2016 00:01:46 -0600 matt_gh2 15545@/talks/discussions Working with a friend who has a film project's footage on a hard drive. Hard drive hasn't been used in 1-2 years. He used the wrong power cord to turn it on, and after turning on, it turned off and light went out. He then connected it to the correct power cord but the hard drive won't turn on. Does anyone have an idea of what the problem may be? Also, any suggestions on how to recover the footage that is stored on this drive. Thank you.

Seagate 60TB SAS SSD Wed, 10 Aug 2016 16:03:17 -0600 Vitaliy_Kiselev 15503@/talks/discussions image

It is not available yet, only in 2017.

But it will have cheap 3D TLC NAND chips with around 100-200 rewrite cycles life.

Seagate 10TB drives Wed, 20 Jul 2016 00:48:48 -0600 Vitaliy_Kiselev 15391@/talks/discussions image

Barracuda Pro will cost $535





SD cards speed tests Wed, 09 May 2012 07:50:51 -0600 humpman 3152@/talks/discussions Here are the simple instructions.

  1. Download HD_Speed zip file from
  2. Extract the HD_Speed.exe executable from the zip file and start it. It may hang for a while (Not Responding) when it starts up because it is scanning your system for drives but eventually will become available.
  3. Set the parameters to Bits/Sec, BlockSize=32KB, Mode=Write and Duration 01:00.
  4. Insert your blank SD card in your computer. HD_Speed will destroy all data on your card.
  5. Choose the appropriate drive letter in HD_Speed and run the test. Be careful here, don't choose your other drives. When you're done, you'll want to format your card before using it.
  6. Report your results in Mbps along with the following information:
  • Card Reader
  • Card Brand
  • Card Type (SD or SDHC or SDXC)
  • Card Class
  • Card Size (in GB)
  • Date Purchased
  • Card Write Speed (in Mbps) Current and Average
HDD sales plummet Fri, 17 Jun 2016 00:27:33 -0600 Vitaliy_Kiselev 15229@/talks/discussions Total HDD sold


Average capacity (check how low it is)


Average prices (with cartel agreement after 2011)


HDD for client devices sold


Especially bad are desktop PC sales



Samsung UFS cards Thu, 07 Jul 2016 15:42:28 -0600 Vitaliy_Kiselev 15327@/talks/discussions image


  • 530 MB/s sequential read speeds
  • 170 MB/s sequential write speed
  • 40,000 IOPS random read rate
  • 35,000 IOPS random write rate


Samsung Electronics, the world leader in advanced memory technology, today unveiled the industry's first removable memory cards based on the JEDEC Universal Flash Storage (UFS) 1.0 Card Extension Standard*, for use in high-resolution mobile shooting devices such as DSLRs, 3D VR cameras, action cams and drones. Coming in a wide range of storage capacities including 256, 128, 64 and 32 gigabyte (GB), Samsung's UFS cards are expected to bring a significant performance boost to the external memory storage market, allowing much more satisfying multimedia experiences.

"Our new 256GB UFS card will provide an ideal user experience for digitally-minded consumers and lead the industry in establishing the most competitive memory card solution," said Jung-bae Lee, senior vice president, Memory Product Planning & Application Engineering, Samsung Electronics "By launching our new high-capacity, high-performance UFS card line-up, we are changing the growth paradigm of the memory card market to prioritize performance and user convenience above all."

Samsung's new 256GB UFS removable memory card ─ simply referred to as the UFS card will provide greatly improved user experiences, especially in high-resolution 3D gaming and high-resolution movie playback. It provides more than five times faster sequential read performance compared to that of a typical microSD card, reading sequentially at 530 megabytes per second (MB/s) which is similar to the sequential read speed of the most widely used SATA SSDs. With this UFS card, consumers have the ability to read a 5GB, Full-HD movie in approximately 10 seconds, compared to a typical UHS-1 microSD card, which would take over 50 seconds with 95MB/s of sequential reading speed. Also, at a random read rate of 40,000 IOPS, the 256GB card delivers more than 20 times higher random read performance compared to a typical microSD, which offers approximately 1,800 IOPS.

When it comes to writing, the new 256GB UFS card processes 35,000 random IOPS, which is 350 times higher than the 100 IOPs of a typical microSD card, and attains a 170MB/s sequential write speed, almost doubling the top-end microSD card speed. With these substantial performance improvements, the new 256GB UFS card significantly reduces multimedia data downloading time, photo thumbnail loading time and buffer clearing time in burst shooting mode, which, collectively, can be particularly beneficial to DSLR camera users. To shoot 24 large/extra fine JPEG photographs (1,120 megabyte (MB)-equivalent) continuously with a high-end DSLR camera, the 256GB UFS card takes less than seven seconds, compared to a UHS-1 microSD card which typically takes about 32 seconds, at 35MB/s.

To achieve the highest performance and most power-efficient data transport, the UFS card supports multiple commands with command queuing features and enables simultaneous reading and writing through the use of separately dedicated paths, doubling throughput.

As the leading memory storage provider, Samsung has been aggressive in preparing UFS solutions for the marketplace, while contributing to JEDEC standardization of the Universal Flash Storage 2.0 specification in September 2013 and the Universal Flash Storage (UFS) 1.0 Card Extension standard in March 2016. Following its introduction of the industry-first 128GB embedded UFS chip in January 2015, the company successfully launched a 256GB embedded UFS memory for high-end mobile devices in February of this year. As of earlier this month, Samsung also completed the Universal Flash Storage Association** (UFSA)'s certification program that evaluates electrical and functional specifications for compatibility of a UFS card, and Samsung's new UFS card products were approved as UFSA-certified UFS cards with the right to use the official UFS logo for the first time in the industry

Card reader. Best reliability/bang for buck? 2016 Mon, 13 Jun 2016 21:12:13 -0600 gcb 15214@/talks/discussions The last thread i saw about this was from 2012 here. And my lexar 24-in-1 is waaaay overdue for replacement (it manages to read most SDHC but speed tops at 15mbps)

So, what is everyone using these days?

And are the USB3 models backwards compatible to usb2 in case i need to plug them to my phone?

Nifty Thunder Rocket - Thunderbolt 2 SSD 1250MB/s read/write Mon, 19 Oct 2015 10:11:48 -0600 jmc 13961@/talks/discussions I just came across this from a company called Nifty. It's a Thunderbolt 2 SSD drive with similar read/write speeds to Lacie's LBD, but much smaller, fanless, bus powered and lower priced. It's aimed at 4K raw editing and ships in November but strangely there seems to be little or no info about it other than on the website:


I always wondered why there was a lack of Thunderbolt SSDs/enclosures on the market - I assumed it was to do with licensing to certain manufacturers, but that was just a hunch. I know there are a few around now from Lacie and the like, but all seem to be very expensive still and most aren't Thunderbolt 2 yet. This seems to be a step in the right direction, and I like the fact that it's PCIe rather than 2.5", but can anyone actually vouch for the company? And how likely it will live up to its read/write speed claims?

XQD Performance Tue, 27 Oct 2015 14:52:00 -0600 MikeLinn 13993@/talks/discussions

HDD survival rates by manufacturer Tue, 21 Jan 2014 14:11:39 -0700 Vitaliy_Kiselev 9414@/talks/discussions image


Samsung introduces 256GB microSDXC card Tue, 10 May 2016 14:13:47 -0600 karl 15066@/talks/discussions Samsung just announced a 256GB microSDXC card, setting a new record in storage density.

The card is said to be sold starting in May for ~ 250,- € a piece, and is said to be water protected according to IPX7, enduring temperatures from -25°C bis +85°C.


What is the largest sd card a hacked gh2 will support? Tue, 22 Dec 2015 23:50:32 -0700 cayblood 14264@/talks/discussions I just bought a used GH2 on ebay and am interested in using it to record long talks at conferences--events that could potentially run all day. Ideally I'd like to find a reasonable quality setting that would allow me to save 8 hrs or more worth of 1080p footage without having to switch cards. First of all, what is the largest sd card that the camera will support? Are there specific card models anyone would recommend that will be sure to work? Also, any recommendations on which firmware hack to install on my GH2? I'm new to this.

Panasonic G7 Memory Card Capacity Sun, 06 Mar 2016 19:51:41 -0700 ashelton96 14724@/talks/discussions Hello,

Anyone care to share how much 4K 100/Mbps video can be stored on a 64 GB 90/Mbps memory card on the G7?

From what I've read its about 1 hr 30 min. but wanted to get other's feedback. Thanks!

SD Video Speed Class - new marketing thing in SD cards Fri, 26 Feb 2016 09:24:28 -0700 Vitaliy_Kiselev 14655@/talks/discussions

The new Video Speed Class maintains the tradition of ensuring guaranteed minimum performance levels as the familiar Speed Class and UHS Speed Class systems do today. Minimum speeds will range from 6MB to 90 MB per second. The fastest options, V60 and V90, support 8K resolution, while V6, V10 and V30 capture high-definition and 4K resolution. All speed classes guarantee minimum video recording speeds to ensure smooth video playback, so actual recording performance may be even faster.



USB 3.1 speed measurements Tue, 24 Mar 2015 22:24:48 -0600 Vitaliy_Kiselev 12664@/talks/discussions Sequential read (megabytes/s)


Sequential writing (megabytes/s)


Video recording (megabytes/s)


SDHC UHS Speed Class 3 cards for 4K Wed, 06 Nov 2013 21:40:01 -0700 Vitaliy_Kiselev 8688@/talks/discussions

SD Association have announced a new high-performance option and symbol specifically designed to support a wide array of 4K2K television and video products.

A new Ultra High Speed (UHS) Speed Class 3 (U3) symbol will indicate products capable of recording 4K2K video and will operate exclusively on SDXC UHS-I and UHS-II memory cards and devices and SDHC UHS-I and UHS-II memory cards and devices.

The UHS Speed Class 3 defines a sizzling fast 30 Megabytes per second constant minimum write speed to ensure high-quality video recordings. This means 4K2K video, live broadcasts and content can be recorded on high-performance cameras such as Digital Single Lens Reflex (D-SLR), Digital Single Lens Mirrorless(DSLM), camcorders and video cameras and then played back smoothly. Consumers will benefit from a single card that is capable of meeting all of their video, photo, music, document and data storage needs.

“The world’s favorite SD memory card continues to evolve and meet shifting industry needs,” said Brian Kumagai, president of the SD Association. “Our new UHS Speed Class 3 standard will give consumers and businesses more flexibility and capability as the market shifts to 4K2K video formats. Both SDXC and SDHC memory card standards already offer the massive storage needed to support 4K2K video with enough room to store photos, music, documents and other data on a single portable card.”

New devices offering the UHS Speed Class 3 will be backwards compatible and will work with existing SD memory cards.

New standard speed between the memory card and the device can be up to 312 Megabytes per second.

SSD Price watch Tue, 28 Aug 2012 05:00:18 -0600 goanna 4389@/talks/discussions image

HyperX Savage USB 3.1 flash drive Fri, 27 Nov 2015 14:47:43 -0700 Vitaliy_Kiselev 14127@/talks/discussions



GH2 Flowmotion 2 + Transcend SDHC Class 10 U1 Ultimate 90MB/s 600x? Fri, 27 Nov 2015 03:31:06 -0700 producer 14125@/talks/discussions Anyone using Transcend SDHC class10 U1 Ultimate 600x with Flowmotion 2?

Any impressions, issues and comments, please?

Lexar 2000x SDXC cards, 260MB/write, 300MB/read Sat, 17 Oct 2015 02:22:22 -0600 Vitaliy_Kiselev 13948@/talks/discussions image

Lexar announced the 128GB capacity of the Professional 2000x SDXC™ UHS-II memory card. Available for purchase later this year, the 128GB Lexar® Professional 2000x SDXC UHS-II card will be the fastest UHS-II memory card available at this capacity on the market.

Leveraging the Ultra High Speed II, UHS Speed Class 3 (U3) specification, the Lexar Professional 2000x SDXC card quickly captures and transfers extended lengths of 4K, 1080p full-HD, and 3D video, as well as high-quality images. The new 128GB capacity card offers read transfer speeds up to 300MB per second and write speeds up to 260MB per second.* Additionally, the Professional 2000x SDXC UHS-II card includes an SD UHS-II reader for high-speed file transfer of photos and videos from the card to any PC or Mac® system, dramatically accelerating workflow and offering users immediate performance right out of the package.**

“By delivering the fastest SDXC memory card with the highest capacity available on the market, Lexar is focused on providing professional videographers and photographers with the necessary tools to perform at new levels,” said Steffi Ho, product marketing manager, Lexar. “Demand for cinematography-grade video and images requires the ability to shoot, store, and transfer more content than ever on a single card, and the 128GB Lexar Professional 2000x SDXC empowers professionals to meet those demands.”

The Lexar Professional 2000x SDXC UHS-II card is backwards compatible with older cameras and readers, performing at UHS-I and Class 10 speeds. Additionally, all Lexar product designs undergo extensive testing in the Lexar Quality Labs to validate performance, quality, compatibility, and reliability with more than 1,100 digital devices. The card comes with a limited lifetime warranty*** and includes a lifetime copy of Image Rescue® software.**** The Lexar 128GB Professional 2000x SDXC UHS-II card will be available in October with an MSRP of $289.99/£224.99.

Transcend UHS-II cards with 180MB/s write speed Thu, 01 Oct 2015 00:13:29 -0600 Vitaliy_Kiselev 13862@/talks/discussions image

Utilizing the new UHS-II bus standards with a UHS Speed Class rating of 3, Transcend SDHC/SDXC UHS-II U3 memory card rolls out the maximum read/write speed of up to 285/180 MB/s respectively. Consumers may consider Transcend multi-functional RDF9 card reader which is specifically designed for UHS-II memory cards. Professional photographers shooting in RAW or JPEG images and videographers filming in Full HD, 4K or 3D videos are assured uninterrupted consecutive shooting and smooth playback with the large storage capacity of up to 64GB supported.

Transcend SDHC/SDXC UHS-II U3 memory card is waterproof, static proof, X-ray proof and shockproof and capable of delivering peak performance under harsh environmental conditions and extreme temperatures ranging from -25 degrees C to 85 degrees C

mSata for desktops Sat, 01 Aug 2015 09:35:11 -0600 Jspatz 13489@/talks/discussions I noticed that mSata is considerably cheaper than SSD of similar specs and capacity. Is there any reson not to use them as a source drive for a video workstation? How to mount? Are there adapters? Would the USB3 speeddrives from Video Devices be fast enough?

CFAST2.0 to SSD adapter Mon, 18 May 2015 07:17:23 -0600 jazzroy 13001@/talks/discussions This is a kickstarter campaign from a guy who had this simple idea to solve CF2 high price problem:

I think that's great, but 499$ for basically a cable and a ABS dock is ridiculous in my opinion.