What's safest? cd-r or dvd

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Skysurfer · #1 Post by **Skysurfer** » Sun Sep 18, 2005 2:15 am

I am a consultant going comany to company with a T43, incl a dvd burner. What is the best back up medium? Is it still CD? Or is the best standard now dvd+rw?

Lawrence

beerak · #2 Post by **beerak** » Sun Sep 18, 2005 3:11 am

From my own experience high quality CD-R like Verbatim is still better than any DVD+-R. For backup don't consider about DVD+-RW or CD-RW at all.

mappoint · #3 Post by **mappoint** » Sun Sep 18, 2005 4:22 am

You should consider DVD-RAM instead of CD-R(W) or DVD+-R(W).

Tom

#4 Post by **GomJabbar** » Sun Sep 18, 2005 5:19 am

I agree with beerak. I also like Verbatim CD/R's. Just make sure you get the ones made in Taiwan. I tried one batch (about a year ago) that was made in India, and gave me nothing but problems. I have a program called Smartburn (that you can download for free from Lite-ON) that indicated that the Verbatims from Taiwan were made with a different recording dye than the ones from India. Go figure.

I have also had problems with CD/RW's in the past, so I would not trust them for my backups.

I just began using DVD+-R's about 3-months ago. No problems yet, but to tell the truth, I trust the CD/R's more. It just seems that when you pack the data that much tighter on the medium, it could lead to problems sooner. No emperical evidence that I've seen, just conjecture.

DaveO · #5 Post by **DaveO** » Sun Sep 18, 2005 7:01 am

It seems logical to me at least that DVD-+R is safer as the data layer is sandwiched between 2 plastic layers, whereas CDR data layer is basically on the back of the disk and vulnerable to being scratched.
I have to agree that for mission critical backup though DVD-RAM is superior yet, as it also includes error correction as well.

desdinova · #6 Post by **desdinova** » Sun Sep 18, 2005 7:29 am

If you're just moving data around, use whatever, just be careful with it.

If it's absolutely mission critical or you're doing long-term storage, you can't beat MO(magneto-optical.)

stalin · #7 Post by **stalin** » Sun Sep 18, 2005 7:50 am

For backup I'm using usb memory sticks, works like a charm. I do not see any reason using neither CDs nor DVDs...

beerak · #8 Post by **beerak** » Sun Sep 18, 2005 8:14 am

GomJabbar wrote:I just began using DVD+-R's about 3-months ago. No problems yet, but to tell the truth, I trust the CD/R's more. It just seems that when you pack the data that much tighter on the medium, it could lead to problems sooner. No emperical evidence that I've seen, just conjecture.

I use DVD-+R for a two years and I can say that some early burned DVDs even quality like Verbatim DVD-R go down. They're hardly readable or unreadable at all. Also I observe that surface of DVDs is more sensitive to scratches.

I agree that the most important is not a mark but a manufacturer. I bought Emgeton and it was Tayo Yuden manufacturer - the best one. But after a 3 months I bought Emgeton again but from another manufacturer - so I gave 20 DVDs in garbage ...

CD-R technology is more stable.

beerak · #9 Post by **beerak** » Sun Sep 18, 2005 8:22 am

stalin wrote:For backup I'm using usb memory sticks, works like a charm. I do not see any reason using neither CDs nor DVDs...

He is a consultant, he should need to make a daily backups and these backups must be stored on some secured place otherwise it is not a backup but a garbage.

You can make a backup on CD-R save it in the item of backups day by day. Too many flash memories would be used for this I think

Skysurfer · #10 Post by **Skysurfer** » Sun Sep 18, 2005 11:58 am

Thanks guys. That was very helpful.

From what I can summize, it would be ideal to use TWO mediums for back-up. Since most companies still use CD technology, CD-RW & CR-R seem best for short-term use and for handing over to the client.

Longer-term, a larger storage capacity format would be ideal. Perhaps the DVD format. At least then I would have split the risk between two different technologies (and two sources of back-up).

I am also going to make another posting on the trouble I had with CD-RW and CD-R last month when I traded up from a T40 to a T43. That was a nightmare...

Lawrence

pipspeak · #11 Post by **pipspeak** » Sun Sep 18, 2005 3:04 pm

I agree... CD-R and DVD-R are the way to go. And while Verbatim are good they are not the best media. Consider MAM-A or Taiyo Yuden (Sp?), which are regarded by many as THE best, most reliable, and longest lived media. They're more expensive, but after experiencing a few CD-R failures I am willing to pay more for peace of mind.

I personally have two backup copies... one on an external HDD and one on CD-R or DVD-R, both kept in different places.

emorphien · #12 Post by **emorphien** » Sun Sep 18, 2005 5:17 pm

pipspeak wrote:I agree... CD-R and DVD-R are the way to go. And while Verbatim are good they are not the best media. Consider MAM-A or Taiyo Yuden (Sp?), which are regarded by many as THE best, most reliable, and longest lived media. They're more expensive, but after experiencing a few CD-R failures I am willing to pay more for peace of mind.

I personally have two backup copies... one on an external HDD and one on CD-R or DVD-R, both kept in different places.

If I had to make backups a lot this is the exact same thing I would do. Currently I don't have much data to be concerned with so a handful of CD-Rs or a DVD-R is the way to go. Taiyo Yuden (i think thats right like you typed it) is who I would choose for important CD-R backups but HDDs are great for backups too as long as you don't drop em.

mappoint · #13 Post by **mappoint** » Mon Sep 19, 2005 4:00 pm

I don´t agree to most answers here. Only DVD-RAM is suitable for backup. The ThinkPad Multi-Burnes can burn DVD-RAM.

Have a look here why to use this format: http://www.ramprg.com/en/index.html

What's safest? cd-r or dvd

What's safest? cd-r or dvd

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