'Tis an interesting discussion. As for mag tapes, higher bit density leads to less than permanent storage. Good old 7 track 256 BPI tapes had a good reputation. In spite of the better magnetic materials, group-encoded tape records with their auto correcting error codes just got worse and worse in terms of long term storage.
As for optical disks the little pits are smaller for higher density DVDs than for CD-ROMs. I should be expected that smaller pits will be more subject to damage than bigger ones. But an important part of the safety is the material in which the pits are formed. For one-at-a -time burning with a solid state laser the pits are formed in a thin optical layer on the "back" side of the transparent blank that is the plastic disk. Commercially "pressed" disks are formed in the plastic itself by forming against a master that is made with a recorder that is much more pricey than a home unit. Pressed disks are expected to have a lot better archival performance. Now a question: Is anyone offering the performance of pressed CD-ROMS for a fee that would be reasonable for a dozen copies? One day we may have holographic recording using three dimensions of the optical medium. Meanwhile. . . Hammer chisel and stone remain the best. -- --> From the U S of A, the only socialist country that refuses to admit it. <-- --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com To unsubscribe from this group, send email to g3-5-list-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
