Path: csiph.com!weretis.net!feeder8.news.weretis.net!newsfeed.bofh.team!paganini.bofh.team!not-for-mail From: =?UTF-8?Q?Niocl=C3=A1s_P=C3=B3l_Caile=C3=A1n_de_Ghloucester?= Newsgroups: alt.comp.periphs.cdr,comp.publish.cdrom.hardware Subject: Re: DVDs are worse than CDs Date: Fri, 9 Jan 2026 23:48:15 +0100 Organization: To protect and to server Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII Injection-Info: paganini.bofh.team; logging-data="2453653"; posting-host="aIceeGQb8jijFuR6cTD++g.user.paganini.bofh.team"; mail-complaints-to="usenet@bofh.team"; posting-account="9dIQLXBM7WM9KzA+yjdR4A"; X-Notice: Filtered by postfilter v. 0.9.3 Xref: csiph.com alt.comp.periphs.cdr:23 comp.publish.cdrom.hardware:27 Dear all: "To maximize disc life-span store discs vertically, do not stack them" says HTTPS://WWW.IBM.com/support/pages/node/847052?mhsrc=ibmsearch_a&mhq=%26quot%3Bstacking%20or%20allowing%20discs%20to%20rub%20against%20each%20other%26quot%3B but Ghostrider <-00-@fitron.142> recommends to store horizontally in Message-ID: <1308bfdd2makm9c@news.supernews.com> in Subject: Re: Previously burned DVD's now having problems playing in alt.comp.periphs.cdr on Date: Fri, 23 Mar 2007 12:42:15 -0700 - "The issue is how are these DVD's stored? Light is light and it will degrade burned discs. Safely storing CD-R's and DVD-R's means putting them away, face down in jewel boxes and away from light, as in a file cabinet, file safe, etc. And, BTW, from the physics standpoint, office lighting has its own pecularities in regards to specific wavelengths, esp. fluorescent lighting. And as for more permanent media, how about MO, magneto-optical." A thread - "Don't stack cdrs?" in news:alt.comp.periphs.cdr - refers to HTTPS://WWW.CDRFAQ.org/faq07.html#S7-27 "Store discs vertically rather than flat. Over a long period, gravity will warp the disc if it's left flat in a jewel case. Most jewel cases support the disc by its center, holding it off the backing. [. . .] Open a recordable disc package only when you are ready to record data onto that disc. If your discs came on a spindle, leave them on the spindle until you need them. [. . .] Do not bend the disc. Flexing the disc can cause stress patterns to form in the polycarbonate, and if you stretch it far enough you might start to deform the reflective and recording layers. Take care when pulling discs out of tight jewel cases." says HTTPS://WWW.CDRFAQ.org/faq07.html#S7-27 but not everyone in "Don't stack cdrs?" agrees. "Fortean Times" says that for every expert, there is an equal, but opposite, expert. I searched for vertical in aus.computers.cdrom where I found 7 relevant posts. E.g. Message-ID: <3fce4a5e$0$29694$61ce578d@news.syd.swiftdsl.com.au> Subject: Re: Life time of a DVD (and various CDs) From: "Dave B." Date: Thu, 4 Dec 2003 07:45:41 +1100 Cf. From: ppnerkDELETETHIS@yahoo.com (Phred) Newsgroups: alt.comp.periphs.cdr,aus.computers Subject: Re: Archiving [CDRs] On Bulk Spindles Date: Fri, 06 Feb 2004 14:02:21 GMT Message-ID: - |----------------------------------------------------------------------| |"In article <5tDUb.41951$%93.10333903@news4.srv.hcvlny.cv.net>, | |Brian T. Rowe wrote: | |>if they are backups of backups, sounds like a | |>good space-saving idea (you do a better job | |> of archiving than some companies do!) I've | |> read some criticism that, over time, gravity | |>might take its toll, the discs may begin to | |>touch and the laminate might be affected. | | | |Yeah. I've read stuff from the professional technonerds who claim the| |*only* safe long-term storage is vertically in the original or similar| |jewel cases." | |----------------------------------------------------------------------| From: Toshi1873 Newsgroups: alt.comp.periphs.cdr Subject: Re: Is ISO superior to UDF? Date: Thu, 12 Feb 2004 10:35:06 -0500 Message-ID: refers to HTTPS://SlashDot.org/story/04/01/24/0054242/guide-to-digital-preservation-from-nist which I partially read. It says: |------------------------------------------------------------------------| |"Looks like CD storage racks got it wrong then... (Score:4, Interesting)| |by rklrkl ( 554527 ) on Saturday January 24, 2004 @07:57AM (#8074427) | |Homepage | |If you are looking for a CD storage rack for your music CDs, almost | |all of them appear to stack the CDs one above the other (i.e. the CDs | |lie horizontally), which clearly helps to save space. However, now | |we're told "do not store discs horizontally for a long time (years)" ! | |So have almost all the CD storage rack manufacturers got it 100% wrong | |for two decades then?" | |------------------------------------------------------------------------| and |-----------------------------------------------------------------------| |"Re:Looks like CD storage racks got it wrong then.. (Score:5, | |Informative) | |by mobby_6kl ( 668092 ) on Saturday January 24, 2004 @08:22AM | |(#8074499) | |from the 50-page pdf: [USENET note after November 2025: this | | SlashDot.org webpage has a broken hyperlink for a 50-page PDF file] | |Physical mishandling of the disc is usually the cause of polycarbonate*| |layer damage. The polycarbonate may also flex or bend if | |stored for a long period of time in a nonvertical position. | |and | |Long-term horizontal storage, particularly in a | |heated environment, can cause the disc to become permanently | |bowed. While the data may still be intact, the disc may not operate | |properly in the drive or permit the laser to follow the track." | |-----------------------------------------------------------------------| Linea Recta wrote in news:alt.video.dvd.tech in 2006: |----------------------------------------------------------------------------| |"I was reading the small text of 'do and don't' on a DVD lay in, where it | |says: "store vertically". Never been aware of that, I have been storing lots| |of media horizontally! Hope it won't affect te media... | | | | | | | |-- | | | ||\ /| | || \/ |@rk | | \../ | | \/os | | | |mccm dot vos at hccnet dot nl" | |----------------------------------------------------------------------------| I had not gotten a clarification about vertical discs versus horizontal disks so I downloaded all the articles that news.BlueWorldHosting.com has in . . . 115,752 articles 209MB uk.media.dvd 28,295 articles 96MB alt.comp.periphs.cdr 34,889 articles 77MB alt.video.dvd.authoring 33,753 articles 71MB alt.video.dvd.tech 33,026 articles 68MB alt.video.dvdr 21,801 articles 47MB rec.video.dvd.tech 3,787 articles 45MB comp.publish.cdrom.hardware 1,820 articles 13MB comp.sys.ibm.pc.hardware.cd-rom 3,665 articles 11MB alt.cd-rom 3,536 articles 8.7MB rec.video.dvd.misc 136 articles 2.9MB comp.publish.cdrom.multimedia 270 articles 1.1MB alt.cdr.panasonic 246 articles 928KB alt.cd-rom.reviews 289 articles 772KB alt.comp.periphs.cdr.mac 257 articles 667KB aus.computers.cdrom 207 articles 331KB alt.philips.cdr.discussion and 82 articles 194KB alt.comp.periphs.cdr.mitsumi thanks to news.BlueWorldHosting.com and Allan Saddi - Saddi.com - and I searched within these hundreds of megabytes of USENET posts. I found vertical in comp.publish.cdrom.hardware in 4 posts but they do not add more insihts than are already in this thread. I found vertical in alt.comp.periphs.cdr in 66 posts of which circa 47 are irrelevant posts. I found vertical in alt.cdr.panasonic but only in 2 irrelvant posts. I found vertical in comp.sys.ibm.pc.hardware.cd-rom but only in 25 irrelvant posts. I found vertical in alt.video.dvd.authoring in 218 posts of which circa 208 are irrelevant posts. I found vertical in alt.video.dvdr in 73 posts of which circa 71 are irrelevant posts. I found vertical in alt.video.dvd.tech and uk.media.dvd and rec.video.dvd.tech and rec.video.dvd.misc in 150 and 184 and 161 and 23 posts, respectively. Judging from Subject: fields, most thereof seem to be irrelevant posts. I did not find vertical in alt.comp.periphs.cdr.mac and alt.comp.periphs.cdr.mitsumi and alt.cd-rom.reviews and alt.cd-rom and comp.publish.cdrom.multimedia I searched via HTTPS://WWW.CDRInfo.com/d7/search/node/vertical but the first webpage of results is irrelevant so I did not bother with its rest. Similarly HTTPS://WWW.VideoHelp.com/search?q=vertical I glanced at HTTPS://WWW.CDRInfo.com/Sections/FAQ/Home.aspx --> Enter Words List --> vertical --> Search An example search result thereof does not even have "vertical"!