Recovery analysis Qu

[Braders]

I have a question...

A while ago i lost an external hard drive with some Jpegs, tiffs, CR2's and some DNG's. Some that i did not have back up of....don't yell at me.

I sent off for data recovery and got the diagnostic today.

There is physical damage to the platters on which the data is stored. Proprietary techniques are required to overcome the damage and access the data.
* The file system was structurally damaged preventing access to the data. The file system has been repaired to point to the file data.
* ........ will use proprietary tools to access the device, recover as much data as possible, and back up.
* The media should be replaced.
* ........ Clean Room expertise was required to access the data.
* C has 55857 good files (71 GB), 0 repaired files (0 GB), and 3988 partial files (34 GB).

I had a look at the files they recovered (via there access site) and would like to know if there is anything to read into, regarding the break down of "Good Files" vs "Partial files".

% Partial Files lost (rough figures)
Jpeg 2
CR2 25
DNG 30
Tiff 40

Whats interesting is, almost all of the DNG files show a 99% percentage read, yet probably 75% of the CR2's have 0-60% percentage read. Does this demonstrate DNG is more resilient to damage?

Second qu - are the files at 99% worth while files to recover?

3rd qu: what are the Platters on a HD?

Ps: man is it expensive!! Which i why i am not progressing further.

cheers

Brad

[peterkrogh]

Brad,
No need for us to yell, I'm sure your wife, accountant, business partner or client has already done that for us.

1. DNG is a more rigid and better documented file structure, so it's not a huge surprise that it's easier to recover.

2. No idea.  For the money they're charging, I'd ask what that means.

3. Platters are the thing that holds the data - they spin like a CD.

Peter

[Braders]

That would be me yelling at myself 4 times over!!

Makes me feel encouraged with my decision to use DNG.

Thanks Peter