EX3 & Working Solid State Drive (SSD) at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Sony XDCAM EX Pro Handhelds
Sony PMW-300, PXW-X200, PXW-X180 (back to EX3 & EX1) recording to SxS flash memory.


Reply
 
Thread Tools Search this Thread
Old May 21st, 2009, 01:10 AM   #1
Major Player
 
Join Date: Jun 2006
Location: Saskatchewan, Canada
Posts: 382
EX3 & Working Solid State Drive (SSD)

This is a follow up to the previous thread:

http://www.dvinfo.net/conf/sony-xdca...hardrives.html

I received several e-mails and comments that "at the end of the day" the Western Digital Passport was still a "harddrive" prone to shock and eventual failure. Therefore it would be unreliable for shooters requiring the same endurance as the SXS. So I moved on with the goal of implementing a solid state drive (SSD) that does not have any moving parts and is completely shock proof as Sony's SXS storage.

There were a lot of technical considerations to make given that the SSD technology that is now emerging cleans up many of the first and second generation issues. So this implementation is a pretty good balance of cost-performance tailored to the EX1/3 camera.

The Corsair SSD is $289 US
The RocketFish USB/SATA Case is $30 US
The Dolgin BP-30/90 Power Unit modified with 5 volt regulators is $40 US
The hacked ExpressCard fitted with USB cable comes from spare parts.
Not bad for 5 hours of EX1/3 recording!

Interestingly the performance tests reveal that this USB-SSD configuration is equal to and better than Sony's SXS. I have not yet taken the time to fill up the SSD with 308 minutes of video and then measure how much time it will take to off-load to a computer via SATA-2. However as you can see the SSD SATA-2 read performance is more than respectable.

I'm waiting for Jeff DeMaagd to ship my EX3 upgrade from plate to a shoulder mount. This will the platform to mount the modified Dolgin BP-30 battery power and the SSD/Case.
Attached Thumbnails
EX3 & Working Solid State Drive (SSD)-ssd-dolgin-power-ex3.jpg   EX3 & Working Solid State Drive (SSD)-corsair-ssd-case.jpg  

EX3 & Working Solid State Drive (SSD)-ex3-ssd-status.jpg  
Attached Files
File Type: pdf Corsair 128GB SSD Specs.pdf (38.5 KB, 897 views)
File Type: pdf EX Storage Performance Comparisons.pdf (1.49 MB, 600 views)
File Type: pdf RocketFish SSD Drive Enclosure.pdf (551.7 KB, 2135 views)

Last edited by Barry J. Anwender; May 21st, 2009 at 09:13 PM.
Barry J. Anwender is offline   Reply With Quote
Old May 21st, 2009, 04:10 AM   #2
Major Player
 
Join Date: Nov 2007
Location: Agua Blanca Ibiza
Posts: 303
I searched the net for Dolgan BP-30/90 Power supply and found nothing listed - can you tell me who makes it and maybe the capacity and voltage output before regulation?

thanks

Paul
__________________
Another Sunny Day in Ibiza
Paul Newman is offline   Reply With Quote
Old May 21st, 2009, 05:36 AM   #3
Inner Circle
 
Join Date: Aug 2006
Location: Poland
Posts: 4,086
Paul,

It's Dolgin, not Dolgan :)
__________________
Sony PXW-FS7 | DaVinci Resolve Studio; Magix Vegas Pro; i7-5960X CPU; 64 GB RAM; 2x GTX 1080 8GB GPU; Decklink 4K Extreme 12G; 4x 3TB WD Black in RAID 0; 1TB M.2 NVMe cache drive
Piotr Wozniacki is offline   Reply With Quote
Old May 21st, 2009, 06:33 AM   #5
Major Player
 
Join Date: Nov 2007
Location: Agua Blanca Ibiza
Posts: 303
Aaah !! thanks, I found it now.

Barry, I wonder how much loss there is with a 7 volt drop at around 150mA to give 5 volts in terms of operation time from a single charge?

I recently built a 5 volt NIMH pack which drives an external Seagate USB drive connected to my EX1, and draws about 350mA in write mode. In theory it should run for 12 hours, using 8 cells providing 4.2Ah, but in reality gives me 9 hours running time.

I'm just concerned about power wastage and therefore active drive operation time when in the field. Obviously the SSD drive you are testing only uses around 150mA - any info on how long a single charge BPU 60 would run the SSD for?

I roughly calculate that the SSD and the regulator/voltage drop would total about 900mA, giving about 4 and a half hours operation

Please correct my math if it's way off!

thanks

Paul
__________________
Another Sunny Day in Ibiza
Paul Newman is offline   Reply With Quote
Old May 21st, 2009, 07:25 AM   #6
Major Player
 
Join Date: Jun 2006
Location: Saskatchewan, Canada
Posts: 382
Paul, there is very little current lost because I am using a standard Motorola 7805 voltage regulator TO-220 case. It can handle a max input of 35 volts and maintain a regulated 5 volt and deliver up to 1 amp output if necessary. In this case the Sony BP-30/90 battery outputs anywhere from 12-14 volts.

One consideration in choosing the Corsair SSD for this application is that it has very low power consumption (96 ma max.) as you can see from the specs attached above. So the Sony BP-30 has all kinds of capacity for this unit. I've modified the Dolgin adapter to accommodate two 5 volt regulators so that it can power two SSD's. The bottom plate is 1/8 inch aluminum so there is plenty of heat sink space. As mentioned, I have yet to run the thing for 5 hours, however with the SSD power utilization I don't anticipate any problems.
Attached Thumbnails
EX3 & Working Solid State Drive (SSD)-dolgin-5volt-regulators.jpg  

Last edited by Barry J. Anwender; May 21st, 2009 at 04:22 PM.
Barry J. Anwender is offline   Reply With Quote
Old May 21st, 2009, 07:55 AM   #7
Major Player
 
Join Date: Nov 2007
Location: Agua Blanca Ibiza
Posts: 303
Please let us know how your tests go, I'm currently using two Seagate drives, but am very keen on the lower consumption/higher reliability of the SSD's - I'm often shooting 6 hours with 3 EX1's so for me its a great way forward without breaking the bank.

I also ran some tests on 12v supply for 5 volt USB drives using 7805's and some other low dropout regulators, but wow, did they dissipate some heat delivering 400mA !! at least the SSD is a lot lower in power needs, and as you say, the Dolgin has good heatsink abilities too.

thanks

Paul
__________________
Another Sunny Day in Ibiza
Paul Newman is offline   Reply With Quote
Old May 21st, 2009, 08:23 AM   #8
Major Player
 
Join Date: Jun 2006
Location: Saskatchewan, Canada
Posts: 382
Quote:
Originally Posted by Paul Newman View Post
I also ran some tests on 12v supply for 5 volt USB drives using 7805's and some other low dropout regulators, but wow, did they dissipate some heat delivering 400mA !! at least the SSD is a lot lower in power needs, and as you say, the Dolgin has good heatsink abilities too.

thanks

Paul
The Dolgin part actually ships with a piece of plastic for its bottom cover. So here, I used a scrape piece of aluminum and fabricated the bottom cover to house the two 5 volt regulators, as well as provide tapped holes for a mounting on either the EX3 cold shoe or the Demaadg Shoulder Mount.

It's worth mentioning that many of the SSD's currently on the market actually consume more power than conventional harddrives. This has been verified by Tom's Hardware with independent tests to debunk the marketing spin.
Barry J. Anwender is offline   Reply With Quote
Old May 21st, 2009, 06:45 PM   #9
Major Player
 
Join Date: Jun 2006
Location: Saskatchewan, Canada
Posts: 382
Quote:
Originally Posted by Paul Newman View Post
Please let us know how your tests go, I'm currently using two Seagate drives, but am very keen on the lower consumption/higher reliability of the SSD's - I'm often shooting 6 hours with 3 EX1's so for me its a great way forward without breaking the bank. Paul
Hi Paul, I just completed filling up the SSD so that I could measure off-load time to computer as well as estimate the battery life.

SSD off-loading via SATA2 to computer is 20 minutes for 308 minutes (5.13 hrs) of video.

Estimated BP-U30 life with the 128GB Corsair SSD continuously writing is 6.7 hrs.
Estimated BP-U30 life with the 128GB Corsair SSD continuously reading is 6.4 hrs.

The SSD drive case under continuous writing or reading for over 5 hrs remains cool to the touch.

The modified Dolgin power pack with the 1/8 inch aluminum bottom gets warm to the touch when continuously reading. However when continuously writing/recording there is only slightly warmth to the touch.

This is about all the formal testing I plan on doing. I feel very satisfied with the end result and especially pleased with the off-load time. It will be a great time saver compared to SDHC card off-loading which are painfully slow. My 16GB Sandisk Extreme III's takes 15 minutes to off-load 1 hr of video. SSD off-loading for 5 hrs of video takes 20 minutes. Cheers!
Barry J. Anwender is offline   Reply With Quote
Old May 21st, 2009, 06:59 PM   #10
Trustee
 
Join Date: Nov 2005
Location: Sydney Australia
Posts: 1,570
Voltage regulators

You might get better efficiency and less heat using a switch mode regulator. That does involve more components though. If there's enough demand I guess the good people at Dolgin could build a run of suitable adaptors.
On the SSD side the new Intel SSDs seem the best of the bunch, at a price and no doubt higher power consumption as they use a faster chipset. On the up side they don't seem to suffer from the problem of performance degradation with use that leads to stuttering, that's the last thing you'd want when writing video to the drive.
Bob Grant is offline   Reply With Quote
Old May 21st, 2009, 07:12 PM   #11
Major Player
 
Join Date: Jun 2006
Location: Saskatchewan, Canada
Posts: 382
Bob, your correct on both points. I choose the Corsair SSD because it uses the more expensive Samsung controller chip which does not suffer from "stuttering" more from "white space fragmentation." This latter issue has plagued the first and second generation Intel SSD's. Intel has only recently updated its firmware to solve the fragmentation issue in their second generation controller.
Barry J. Anwender is offline   Reply With Quote
Old May 22nd, 2009, 01:35 AM   #12
Major Player
 
Join Date: Nov 2007
Location: Agua Blanca Ibiza
Posts: 303
Barry,

just to be sure, do all SSD's come with USB as well as SATA connections? I'm finding little documentation on some drives I've looked at - massivley fast ingest time - wow!

thanks

Paul
__________________
Another Sunny Day in Ibiza
Paul Newman is offline   Reply With Quote
Old May 22nd, 2009, 02:11 AM   #13
Inner Circle
 
Join Date: Feb 2004
Location: switzerland
Posts: 2,131
1W Single Output Isolated DC-DC Convertors > Maplin
Giroud Francois is offline   Reply With Quote
Old May 22nd, 2009, 02:20 AM   #14
Inner Circle
 
Join Date: Feb 2004
Location: switzerland
Posts: 2,131
I used some of these ones for my prompter (12V for the monitor and 5V for the VGA transmitter out of 24V)
Giroud Francois is offline   Reply With Quote
Old May 22nd, 2009, 02:54 AM   #15
Regular Crew
 
Join Date: Jan 2009
Location: Warrington, UK
Posts: 48
This sounds really good news. I hope someone is able to offer a 'kit' with all the bits ready assembled / soldered for the less technically minded like myself. I would hate to blow my cam up because I may have soldered the wrong wires to the wrong bits.

Well done to the pioneers of this method, lets hope its available to the masses at a sensible price in the near future.

Stuart
Stuart Wilson is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony XDCAM EX Pro Handhelds

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 04:35 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network