IPB

Welcome Guest ( Log In | Register )

Best way to backup audio CDs
androdion
post Nov 30 2012, 01:27
Post #1





Group: Members
Posts: 18
Joined: 10-November 12
Member No.: 104434



I'm a CD collector and as such I like to take good care of my collection. I keep them stored at decent temperatures without being exposed to direct sunlight, smoke or moist. Even so there are CDs which you acquire second-handed that weren't treated as good as that and present signs of decay, and by decay I mean "pin holes" and/or "disc rot". Others have been made by pressing plants that have been know to present this problems over time, or are from a time period where manufacturing processes were more rudimentary and didn't take into consideration the possible decay of the CDs.

All of this to say that as a CD collector I do have some old discs that are beginning to present signs of decay and "rotting", so I wanted to make backup copies of them in the best possible way, not to play them from my PC but just to have them backed up in case some of the data on the CDs gets destroyed and lost over time. I've been reading a lot into it and I've became aware of these "gold discs" that are supposed to last 100-200 years or so because gold doesn't rust pure and simple. I have no idea how feasible this option is (to do direct copies into gold discs) and how expensive it would be, so I'd like to for now make the backups into a hard drive and possibly later on record them to that kind of media.

Now a problem arises. How to back them up in digital format? FLAC is the go to format, but wouldn't it be better to save them as an uncompressed WAV with a CUE sheet? What is the best option to back up audio CDs by using EAC?
Go to the top of the page
+Quote Post
 
Start new topic
Replies
DVDdoug
post Nov 30 2012, 02:31
Post #2





Group: Members
Posts: 2565
Joined: 24-August 07
From: Silicon Valley
Member No.: 46454



My music isn't properly backed-up, although I have 4 MP3 copies of everything on 3 different computers and a portable drive (including a full library on a computer at work). I've got a few hundred CDs that I've been collecting (starting with the early days of CDs) and as far as I can remember, I've only had 3 discs "go bad" or get damaged (and I replaced them). And now that I think of it, one of those was a gold disc from Mobile Fidelity that cracked after being left in the car. (Other than that, I've had jewel cases warp in a hot car, but no other CDs have ever been damaged that way... And, maybe it wasn't the heat???)

I do have a habit of making an extra "archive copy" whenever I copy a CD, but not every time I rip to MP3. I have a few gold discs, but mostly I use whatever I happen to have on-hand at the time.

I think the best-safest backup solution would be to use hard drives. And, use whatever backup strategy you'd use for any other data. I'm not an expert on that stuff, but you'd have multiple copies in different physical locations, and maybe multiple generations of copies so in case any bad data gets backed-up, or in case some data is missing from a newer backup, there is an older good-copy. And, then you have to validate your back-ups at regular intervals.

QUOTE
FLAC is the go to format, but wouldn't it be better to save them as an uncompressed WAV with a CUE sheet? What is the best option to back up audio CDs by using EAC?
I think that's just a personal choice. I'd probably go with FLAC. I can't think of any disadvantage with FLAC. There may not be any FLAC decoders in 100 years, but as long as you (or someone) can re-format the data before it's too late, any lossless format is acceptable.

Oh... There may be an advantage with WAV... This almost never happens with digital storage, but if just one bit in a WAV file gets corrupted, you're only going to corrupt one sample (1/44100th of a second) and only one channel. (That's assuming the header doesn't get corrupted, making the file unreadable, but a corrupt header could be fixed.) With a compressed format, one corrupt bit is likely to do more damage.

P.S.
But as dgauze says, you might not know there's an error in the WAV fie.

This post has been edited by DVDdoug: Nov 30 2012, 02:42
Go to the top of the page
+Quote Post
Porcus
post Nov 30 2012, 14:38
Post #3





Group: Members
Posts: 1842
Joined: 30-November 06
Member No.: 38207



QUOTE (DVDdoug @ Nov 30 2012, 02:31) *
Oh... There may be an advantage with WAV... This almost never happens with digital storage, but if just one bit in a WAV file gets corrupted, you're only going to corrupt one sample (1/44100th of a second) and only one channel. (That's assuming the header doesn't get corrupted, making the file unreadable, but a corrupt header could be fixed.) With a compressed format, one corrupt bit is likely to do more damage.


If that is an issue, then FLAC can store uncompressed. If you have no more files than can be fit on one drive anyway, it is maybe not an issue. If you need two drives and uncompressed requires a third, then you might just as well compress and use the third for parity. Currently I am using this thing (no striping!): http://www.vilett.com/disParity/

Also, you got backup solutions like Spoon's AudioSafe, which is planned to work on a pay-when-you-need-it basis.


--------------------
One day in the Year of the Fox came a time remembered well
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 22nd August 2014 - 07:29