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The Saturday 2007-06-02 at 12:04 +0200, Eberhard Roloff wrote:
> However, for purposes of simplicity, lets assume that your son has data
> with a volume of 200GB (or less), that needs to be backed up regularly.
>
> > If I had to backup all and every file on his computer, I should have 100
> > Tb of usb drives...
> You might have ignored the essence of rsnapshot and similar solutions.
> The beauty of these solutions is that backups are done by using symlinks.
>
> Lets see how this basically works and what you get as a result:
>
> ===This is how it works:=====
> (assuming that you are doing a simple daily backup. In reality, you most
> probably will want to do weekly and monthly backups, as well) :
>
> day1: 200GB are backed up to the usb drive
External usb hard drives are very convenient, but they are not reliable,
unfortunately. They are exposed to handling, for instance, and a HD should
not be even moved while spinning.
Then, the chipsets used by those boxes are cheap and incomplete, they
don't have the necessary functions to use SMART and thus asses the drive
health.
It is a very convenient way of adding large storage capacity which you can
then move out to a cupboard or safe, but in fact they can and do die on
you at the most unexpected moment.
- --
Cheers,
Carlos E. R.
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