Re: [semi-OT] Data archiving (was Re: Query on adding a USB hdd)
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Ron Johnson wrote:
> On 05/25/07 09:04, Johannes Wiedersich wrote:
>> Douglas Allan Tutty wrote:
> [snip]
>>> True. However, for a small data set (under 1 GB) the need for three
>>> copies means three hard drives. Using a hard drive and rewriting over
>>> it means that you loose old archives.
>> If you have 1GB of data and a say 40GB hard disk that means about 40
>> full backups on each. With incremental backups those would last much,
>> much longer.
>
>> For your three disks you'd have 120 full backups! Of course in the case
>> of failure you'd loose 40 of them, instead of loosing one unreadable CD,
>> but I consider checking 120 CDs for unreadable sectors etc. a nightmare.
>
> But isn't that putting all your eggs in one basket? (Unless I'm
> mis-reading you.)
3 disks in three different locations (according to Douglas'
requirements). You'd have backup 1,4,7,... on the first disk 2,5,8,...
on the second and so forth.
Johannes
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