I backed-up some 40-year-old open-reel tapes to CDs at the start of January. Verbatim CD-R Lighscribe, so not cheap unbranded trash. I even spent ages making and burning nice Lighscribe labels for them. I put them away in a CD wallet (this was to be the big mistake...), pulled them out for the first time today nearly 10 months later, and not only have the labels 'burned off' (presumably a chemical-reaction with the CD wallet, even though it's not PVC), but three of the 10 won't play now, even though they all did in January :wall:
OK probably my fault for storing them in a way which the manufacturer would probably say is 'improper' (ie in a wallet), but I can't get over the irony that I backed-up my old tapes to a so-called more-secure medium for archive-purposes, and over a period of time which amounts to less than 1/40th of the age of these tapes, I've experienced a 30% failure-rate. The worst thing I had to fix on ten 40-year-old 1/4" tapes were two broken splices.
Ah well, looks like my Akai 4000DB will be getting a dusting-off this winter again. And this time I'll make two damn copies of each tape! (And I'll avoid storing them in a wallet.)