{"id":5218,"date":"2004-04-26T07:49:02","date_gmt":"2004-04-26T14:49:02","guid":{"rendered":"http:\/\/hill-kleerup.org\/blog\/wp\/2004\/04\/26\/gaps-in-the-record.html"},"modified":"2004-04-26T07:49:02","modified_gmt":"2004-04-26T14:49:02","slug":"gaps_in_the_rec","status":"publish","type":"post","link":"https:\/\/hill-kleerup.org\/blog\/2004\/04\/26\/gaps_in_the_rec.html","title":{"rendered":"Gaps in the record"},"content":{"rendered":"

CD-Rs may not be all they’re cracked up to be for long-term archives<\/a> — even for those who’ve never believed the life-time archive hype.<\/p>\n

But an investigation by a Dutch personal computer magazine, PC Active<\/i>, has shown that some CD-Rs are unreadable in as little as two years, because the dyes in the CD’s recording layer fade. These dyes replace the aluminium “pits” of a music CD or CD-Rom, and the laser uses that layer to distinguish 0s from 1s. When the CD is written, the writing laser “burns” the dye, which becomes dark, to represent a “1” while a “0” will be left blank so that if the dye fades, there’s no difference; it’s just a long string of nothing to the playback laser.
\nSo have you already lost those irreplaceable pictures you committed to the silver disc? PC Active suggests we should forget CD-Rs as a durable medium, after its own testing found some with unreadable data after just two years. “Though they looked fine from the outside, they turned out to be completely useless,” wrote the technical editor Jeroen Horlings, who had tested 30 brands in 2001, left them in a dark cupboard for two years and then re-tested them in August 2003. Of the brands tested, 10 per cent showed ageing problems. And it wasn’t just Horlings. After seeing the results, shocked readers contacted the magazine with their experiences.<\/p>\n

Similar dyes are used with write-once DVDs. Swell.<\/p>\n","protected":false},"excerpt":{"rendered":"

CD-Rs may not be all they’re cracked up to be for long-term archives — even for those who’ve never believed the life-time archive hype. But an investigation by a Dutch…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[20],"tags":[],"class_list":["post-5218","post","type-post","status-publish","format-standard","hentry","category-hi-tech"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":3643,"url":"https:\/\/hill-kleerup.org\/blog\/2002\/10\/14\/whats_in_a_name.html","url_meta":{"origin":5218,"position":0},"title":"What’s in a name?","author":"***Dave","date":"Mon 14-Oct-02 12:29pm","format":false,"excerpt":"New Zealand college student gets promotional CD from New Zealand Symphony Orchestra. Student puts CD into girlfriend's computer. Media player software on girlfriend's PC looks on the Internet in various...","rel":"","context":"In "Hi-Tech"","block_context":{"text":"Hi-Tech","link":"https:\/\/hill-kleerup.org\/blog\/category\/hi-tech"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5760,"url":"https:\/\/hill-kleerup.org\/blog\/2004\/07\/21\/good_migrations.html","url_meta":{"origin":5218,"position":1},"title":"Good Migrations: The Plan","author":"***Dave","date":"Wed 21-Jul-04 11:37am","format":false,"excerpt":"UPDATE (3:00p) - Got the loaner PC, a Thinkpad T40. Faster, but smaller (and lower screen res) than my A31. Ah, well, beggers can't be choosers. I'm going to lay...","rel":"","context":"In "My Computer"","block_context":{"text":"My Computer","link":"https:\/\/hill-kleerup.org\/blog\/category\/my-computer"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":3304,"url":"https:\/\/hill-kleerup.org\/blog\/2002\/12\/26\/tech_support.html","url_meta":{"origin":5218,"position":2},"title":"Tech support","author":"***Dave","date":"Thu 26-Dec-02 11:46am","format":false,"excerpt":"Margie's folks have a Mac. They've had one since I've known them, all the way back to the cute little Mac Plus era, when if you wanted something that was...","rel":"","context":"In "Hi-Tech"","block_context":{"text":"Hi-Tech","link":"https:\/\/hill-kleerup.org\/blog\/category\/hi-tech"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1863,"url":"https:\/\/hill-kleerup.org\/blog\/2002\/04\/18\/its_automagic.html","url_meta":{"origin":5218,"position":3},"title":"It’s Automagic!","author":"***Dave","date":"Thu 18-Apr-02 4:55pm","format":false,"excerpt":"So I've been enjoying listening to CDs on my PC since I did my XP reinstall (which unfrelled the drivers that had been keeping it from playing audio CDs). Windows...","rel":"","context":"In "Hi-Tech"","block_context":{"text":"Hi-Tech","link":"https:\/\/hill-kleerup.org\/blog\/category\/hi-tech"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6891,"url":"https:\/\/hill-kleerup.org\/blog\/2004\/12\/08\/technology_give.html","url_meta":{"origin":5218,"position":4},"title":"Technology giveth, and technology taketh away","author":"***Dave","date":"Wed 8-Dec-04 3:06pm","format":false,"excerpt":"Due to a nifty new automated machine at the post office, I was in and out on my lunchtime quest for stamps in about 3 minutes. Excellent. Now if they...","rel":"","context":"In "Cars"","block_context":{"text":"Cars","link":"https:\/\/hill-kleerup.org\/blog\/category\/cars"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5388,"url":"https:\/\/hill-kleerup.org\/blog\/2004\/03\/23\/tikka_to_dye_fo.html","url_meta":{"origin":5218,"position":5},"title":"Tikka to dye for","author":"***Dave","date":"Tue 23-Mar-04 8:33am","format":false,"excerpt":"Mmmmm. Chicken tikka was a staple of ours when Margie and I last went to Britain on our own. Turns out those \"colors not found in nature\" that it sometime...","rel":"","context":"In "Health"","block_context":{"text":"Health","link":"https:\/\/hill-kleerup.org\/blog\/category\/health"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/posts\/5218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/comments?post=5218"}],"version-history":[{"count":0,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/posts\/5218\/revisions"}],"wp:attachment":[{"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/media?parent=5218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/categories?post=5218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hill-kleerup.org\/blog\/wp-json\/wp\/v2\/tags?post=5218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}