Hi,
I personally tend to dislike CD/DVD media as a long term archive.
There are some issues that just aren't overcome by DVD/CD archiving.
A) its not "live" "online" data, as such you can't really "know" if the data is uncorrupted, I have in the past reached for a disc only to find that after 10 years or so it had deterorated (it was in its jewel case) admittedly this was a "cheap" disc and we are talking from way back when burners were invented but the experience hurt...
B) Are you burning "two copies" and archiving one set offsite?
I guess I have the following questions that you might want to answer:
What is my obligation to store these images in perpetua?
What is my fiscal liability by not protecting these images to the nth degree?
What is my financial downside to not having images available for later sale?
I use a 4 level of security approach. Ie for me to "loose" data 4 bad things need to happen.
My specific solution isnt for everyone, but there are some newer inexpensive methods of storing data that are on the market. You might need to hire a computer geek for a few hours to implement a solution for you, and you might end up spending $2000 in total on a solution, but that solution will give you a lot of redundancy and peace of mind...
There are devices called "network attached storage" NAS.
Some are expensive, some are less expensive.
D-Link make a unit that has 500Gb of redundant storage, buying 2 for less than $1000 will give you high quality storage for 500 gb of data (
TigerDirect.com Best Deals - Computer Parts, PC Components, Desktop Computers, Laptops, Notebooks item 2x
D700-5386 )
I use a similar setup but server based and then I use a simple application called second copy to copy files back and forth between the two NAS units. (this needs to be configured carefully to prevent a failure on one unit propagating to the other unit, but its not hard...)
second copy costs about $30.
I use a standard naming convention for each folder that includes the date in reverse format and any various keywords such as the event name so a typical folde rmight be: 20070115 chris brandy neff wedding, using this a simple windows search lands me at my files in seconds.
For older archives you can "zip" an entire folder gaining approximately a factor of 2 savings.
Using the above approach if any one drive "goes down" you still have a copy of the data on the other 3 drives (there are two identical copies in each unit, one on each disc)
I use a further layer of security which is to store the second unit "at my house" and enable second copy to work over the internet, so even if my office burns down, the data is still secure.
This is a long way from "simply" buring dvds but for me it gives me "instant" access to any of my files and the knowledge that unless the city burns down that I'm reasonably assured that the data will survive.
True its less expensive for me to implement as I'm skilled in this stuff, but those who are IT challenged shoudl consider outsourcing this stuff. After all with the kind of revenue generated over a year an infrastructure investment of $1-2000 per year or more isnt that bad...
If you really want more details on how to specifically implement this stuff, I'm happy to go into more depth, but I feel I've rambled on enough already...
Regards
K