Verbatim Cd-R's are junk!!

[Jim Thompson]

But how do you identify them before you buy them?

[snip]

Buy them by BRAND name ?

Or use CDR media identifier posted at...

http://www.analog-innovations.com/SED/cdrid163.zip

to identify CDRs of unknown origin.

...Jim Thompson

 

[Tom Del Rosso]

CDR media identifier posted at...

http://www.analog-innovations.com/SED/cdrid163.zip

Thanks! But is there some way you can identify them before you buy them?

 

[Tom Del Rosso]

Buy them by BRAND name ?

I did a search right after posting (always doing it backwards).

I thought you were saying that they only manufacture, and that theirs are
sometimes what you get when you buy name brands. (Like they way you would
buy Red Wing peanut butter, which is identifiable by the raised logo on the
bottom of the jar, but sold as generic.)

 

[Spehro Pefhany]

But how do you identify them before you buy them?



In they say that magneto-optical is
better for long life, 50-100 years estimated.

Are any of the drives still made? ;-)


Best regards,
Spehro Pefhany

 

[Tom Del Rosso]

Are any of the drives still made? ;-)

Actually they claim a warranty of 50 years and the published estimates
approach 100 years. We still make drives that can read 720 kB floppies, so
these drives should be around for a few decades. You don't want to wait for
the last minute to replace the disks anyway, if you need the data longer
than a few decades.

 

[Jim Thompson]

Thanks! But is there some way you can identify them before you buy them?

Only by brand name.

...Jim Thompson

 

[~neil~]

Yo,

I remember the good old days when Verbatim was known for making
defective floppy disks.

Really? you know I wouldn't go through all of this trouble letting
people that these CD-R's are bad, I tried emailing them, and not only
that they don't even warranty there products........Bastards!! It's
more and likely I got a bad batch, but who knows.

-Neil

 

[Rich Grise]

So far, all the CDs that we've pulled out of the cave have been fine,
going back 4 years at least. We switched to DVDs about 9 months ago,
and I hope they're as good. The Cave is fairly dry, and we keep them
in ziploc bags; I think moisture can get to some burnable CDs and
DVDs.

Tapes always were flakey. Except for paper tape, of course.

If you want to get really anal, you could stick a little dessicator
pack in the ziploc.

Cheers!
Rich

 

[Chris Carlen]

Our philosophy is massive overkill onto write-once media. Everything
official is released on floppy or CD. The company librarian copies
that to a server drive (proving the media is ok at that instant)

Not unless you diff the files or md5sums between source and destination
each step of the way do you really know if the backup is worth anything.

Readability of the CD filesystem is not an indication of data integrity.

You could wind up with nothing but a million copies of bad files without
verification at each step.


and I

 

[Chris Carlen]

Thanks! But is there some way you can identify them before you buy them?

Just buy Taiyo Yuden from a reputable supplier. They are unbranded. Here:

http://www.meritline.com/
http://www.rima.com/

I've used meritline, but not the second one. Meritline accepted for
return a TY DVD+R stack that I sent back unused, after determining that
it what the ill-reputed lot. So they are fair folks.


Good day!

 

[Chris Carlen]

Really? you know I wouldn't go through all of this trouble letting
people that these CD-R's are bad, I tried emailing them, and not only
that they don't even warranty there products........Bastards!! It's
more and likely I got a bad batch, but who knows.

-Neil

Odd, my VB DVD+RWs state a lifetime warranty.

Call:

800-538-8589

 

[Clifford Heath]

CDR media identifier posted at...
http://www.analog-innovations.com/SED/cdrid163.zip

According to the notes for this program, it's the only one
that to the author's knowledge reads the ATIP information.
He didn't look very far; cdrecord (both Windows and *nix)
has a -atip option also.

Clifford Heath.

 

[Jim Thompson]

According to the notes for this program, it's the only one
that to the author's knowledge reads the ATIP information.
He didn't look very far; cdrecord (both Windows and *nix)
has a -atip option also.

Clifford Heath.

Keep in mind that what I posted is SEVERAL years old.

...Jim Thompson

 

[Tom Del Rosso]

Just buy Taiyo Yuden from a reputable supplier. They are unbranded. Here:

http://www.meritline.com/
http://www.rima.com/

Thanks. I thought you were saying that it was one of those manufacturers
that Sony, et al, might sometimes buy and put their brand on.

 

[John Larkin]

Not unless you diff the files or md5sums between source and destination
each step of the way do you really know if the backup is worth anything.

Readability of the CD filesystem is not an indication of data integrity.

You could wind up with nothing but a million copies of bad files without
verification at each step.

Well, most of the time, manufacturing soon reads the files from the
server and builds stuff. That sort of demonstrates that the files
still make sense. No problems so far.

Worst-case, we can go back to the engineer and re-release the designs
from his hard drive. We have another server drive that all the
engineers use as backup for their work-in-progress, and *that* gets
backed up to DVD weekly.

John

 

[Clifford Heath]

Keep in mind that what I posted is SEVERAL years old.

I wasn't criticising, just pointing out a possible alternative,
accessible to *nix users as well as Windows ones.

 

[Chris Carlen]

Thanks. I thought you were saying that it was one of those manufacturers
that Sony, et al, might sometimes buy and put their brand on.

They might. That's the point. You never *know* what factory the brands
get it from until you probe it in your drive.

So the only way to know what you are getting is to ignore brands and buy
from a vendor that can give you factory direct media, like TY.

Good day!