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Daniel Troeder schrieb: |
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> Am Mittwoch, den 26.11.2008, 15:26 +0100 schrieb Florian Philipp: |
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> |
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>> Jorge Peixoto de Morais Neto schrieb: |
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>> |
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>>> On Tue, Nov 25, 2008 at 7:15 PM, Joerg Schilling |
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>>> <Joerg.Schilling@××××××××××××××××.de> wrote: |
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>>> |
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>>>> James <wireless@×××××××××××.com> wrote: |
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>>>> |
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>>>> |
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>> [...] |
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>> |
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>>> As for my photos, I can back all the collection to a single DVD (and |
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>>> to a second one, since I keep hearing that DVD-Rs are unreliable), and |
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>>> since I don't take new photos every week, this solution is fine. |
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>>> |
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>> A second DVD-R won't solve the problem because optical disks degrade |
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>> over time and the second one will degrade just as fast as the first. |
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>> What you need to do is to check the disks periodically (once a year is a |
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>> good time frame). |
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>> I myself would add a textfile with md5sums for all files to the DVD so |
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>> you don't have to check them visually. |
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>> |
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> You can buy so called "archival grade" DVD-Rs that should work for 10-20 |
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> years in a good environment. There are hugh differences between |
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> products. In germany you can buy very good ones from Verbatim for around |
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> 2€/disk. |
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> |
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> Also keep your photos on 2 HDDs (in different places), and copy them to |
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> new HDDs when you buy new ones. Nowadays you buy new HDDs every 2-3 |
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> years or so, and normally the old ones should not have failed until then |
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> (at least not 2 disks on the same sectors). |
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> The MD5/SHA-checks should be done before copying to the new disks, so |
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> you can be sure to copy only healthy files. |
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> |
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If you decide to store dvds for 20 years it would be wise to store a pc |
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with it. Who knows if there a dvd readers or ide / sata connections |
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available then ;-) |
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Everybody who has data to protect should really store them in two |
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different places which do not burn down at the same time (there can be a |
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flood / earthquake ... [what I want to say: The places really should be |
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different!]) |
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Yes check the backup before storing it. I once hat a useless backup. All |
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the files showed up but they only used some k. Thank god I had a second |
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backup which was fine. |
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If you only take photos randomly, you also can use cds, if the size is |
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big enough. And espacialy for photos hard copys are very nice. One even |
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can show them to grandparents ... ;-) |
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|
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kh |
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