[QUOTE=Kerry56;2638362]If you have a Lite-on dvd burner, try a scan in it. Most of them are very good for scans with Nero CD Speed.[/QUOTE]
I don’t think I own a LiteOn unless one of my random older drives was a rebadge. I’ll have to check them out and see.
I just reposted my results in that thread using 8x read speed this time. http://club.myce.com/f105/samsung-sh-s203b-scans-discussion-here-220466/index119.html#post2638371
The TDK’s (CMC) just plain suck all around: (MOST of my backups on are these discs! ARGH!)
PIE: max 436/3.4m (8x) vs 716/6.7m (16x)
PIF: max 8/66k (8x) vs 13/148k (16x)
The Ritek’s got a lot better, but still on the high side:
PIE: max 123/800k (8x) vs 358/2.8m (16x)
PIF: max 8/34k (8x) vs 12/110k (16x)
Sony’s still the best of the bunch, but strangely got WORSE PIF at 8x:
PIE: max 57/192k (8x) vs 66/212k (16x)
PIF: max 8/37k (8x) vs 8/19k (16x)
[QUOTE=Arachne;2638366]Sammies, or at least the few I own/have owned are excellent readers - by that I mean they’ll overlook many errors when reading stuff back. This is why I always recommend a really picky drive for any read-back or Transfer Rate Tests, as they’ll show up any errors. NEC-based drives are good for this (Optiarc, NEC, most Pioneer models).[/QUOTE]
Ahh, I see. Well, I know I have a couple of old NEC/Optiarc drives buried somewhere. But they’re quite old as in 6-10 years old. I suppose I could buy one just for read testing. I’m not too worried about the DVD’s working on a variety of players though, so maybe I can just stick to Samsung drives in the future for reading the backups.
[QUOTE=Arachne;2638366]My Verbatims, which I use for both everyday and archival use, have been going for a few years now, same for the old 4x Taiyo Yuden DVD-Rs I still have. I tend to back up to two brands of media if the data’s important - has saved my butt on a number of occasions[/QUOTE]
That’s good to know. I should go test some old archives from 8 years ago just for fun. The data’s also carried forward on HD’s but still…
Backing up on two brands of media sounds like a good idea. But I’m finding it hard to tell the MID from the websites that sell the discs. I think I can get the Taiyo Yuden’s at Rima as they mention MID code YUDEN000T02 (slightly different from the Yuden0002 mid Kerry56 recommended, but I’m assuming it’s the same one), but none of the sites list the MID for the Verbatims. Rima and Newegg seem to sell the same 100 spindle of Verbatims (95098), but neither mention MID. Actually, reading the review of the Verbatims on Newegg makes it sound like the recently switched factories to India and there are a number of complaints about quality (not enough to lower the 5-egg score, but enough to worry about). Amazon also sells a Verbatim 100 spindle with a different code (97459) which is slightly cheaper too. (Don’t know if I’m allowed to post links to e-commerce pages so I won’t.)
[QUOTE=Arachne;2638366]As a general rule, I burn at 8x for 16x discs (or even 12x if a scan and TRT are good)…and 8x for 8x discs. It’s a bit of trial and error though, to see which speed your drive/firmware combo likes for each disc brand/manufacturer. [/QUOTE]
Yeah, that’s what I thought. I always do 8x for safety. I guess I’ll do a few speed tests when I get the new discs then.
[QUOTE=deanwitty;2638370]Make that three votes. Your concerns are exactly right. All media deteriorates over time. A disc with an ugly quality scan may be just readable, but is that much closer to slipping over the edge to unreadable.[/QUOTE]
Thanks for your input! I was afraid of that, glad to have it confirmed. I need these backups as off-site insurance in case anything happens (fire, theft, etc). I guess I’ll be doing another 75-disc backup when I get the new discs. Joy!
Wow, I have say you guys are much more helpful here (and quick) than any other forum I’ve asked questions on (I wish there were so many helpful people at the Unity3D forums!). Thanks to you all!