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FORUMS General Gear Talk Computers 
Thread started 25 Sep 2013 (Wednesday) 19:52
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Image Storage Integrity...

193 posts
Likes: 6
Joined Mar 2009
Location: N.W. Missouri
Sep 25, 2013 19:52 |  #1

Is there a good method to guard against images that may be corrupt, either because of failing hardware or faulty software? In the past I have had files that experienced corruption and I never new it until I tried to access them. Thankfully they weren't anything critical.

I currently have my photographs and videos on a RAID 1 partition in my computer and then also back them up to an online storage service. I am using my motherboards Intel RAID driver though and it seems kind of unstable since I activated it. I am now thinking of buying an external RAID 1 box.

Any thoughts or suggestions?

Cameras: Canon EOS 7D - 6D - R5 | Powershot SX10 is | Powershot S30

Canon 60mm f/2.8 Macro USM | 15-85 IS USM | 24-70mm f/2.8 L | EF 70-300 f4-5.6 L
| RF 28-70 f2

Speedlite 430 EX II | Camranger

3,361 posts
Gallery: 3 photos
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Joined May 2007
Location: Rio Grande Valley
Sep 25, 2013 20:30 |  #2

The only good method is due dilligence; it begins with checking your flash memory. That's where corruption is going to happen first, so keeping your SD/CF cards in good shape would be key. The next place corruption happens is during transfers from camera/flash to your storage device. RAID and backups will not protect you from either of these scenarios. The third likely place is during the editing process. Make sure your program isn't corrupting or changing the files in any way (i.e. Lightroom or Aperture do not change files). The final step are your hard drives. Check them often and do not store them in ways that may harm them like letting them sit unpowered for months or years. Mechanical drives do not like to sit unused for extended periods of time. If you are going to let them sit, place them vertically or on their side in a case with cutouts for HDD's. It will protect them and keep them in an orientation that help prevent mechanical sag onto the platters.

214 posts
Joined Dec 2008
Location: CT
Sep 29, 2013 13:53 |  #3

Yeah I had the same question

Canon 5D Mark II Gripped - / / - Canon 70D - / / - Canon XSI Gripped - / / - Canon 430 EX II X2 - / / - Canon 35mm L f1.4 - / / - Canon 70-200mm L - / / - Canon 17-40 L f4 - / / - Tamron 17-50 f2.8 - / / - Canon 85 f1.8 - / / - Rokinon 8mm Fisheye - / / -
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212 posts
Likes: 1
Joined May 2005
Location: Los Angeles, CA
Oct 01, 2013 18:50 as a reply to  @ sunten1's post |  #4

You could compare the backup to the primary copy using FreeFileSync​/projects/freefilesync​/ (external link) in "content" mode. (You can do the comaparison without sync-ing and review files that don't match.)

I had a backup set with some corrupt files (in my case the corruption seems to have happened during a copy process) and was able to root out the problem files this way.

Now I run that comparison occasionally to make sure nothing has become corrupt. Obviously, this only works if one copy ISN'T corrupt.

As far as I can tell, there is no software that can determine if a jpg/raw is corrupt by only examining that one copy of the file. Anybody know otherwise?

7D, 17-55, 50 1.4, 70-200, 10-22, Kenko Tubes, OPTIX xr, Einstein

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Image Storage Integrity...
FORUMS General Gear Talk Computers 
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