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Originally Posted by sjk
... or automatic shutdown before completely losing power.
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Agreed.
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I'm curious how many non-portable Macs you have and their models. Are they sleeping or fully shutdown when not in use? Even if having UPS for all of them is impractical maybe it's a justifiable benefit for some of them?
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4 non-portable Macs, from mini to Pro. Not a mansion, but no chance to share a UPS across Macs. I almost never use sleep, just shutdown. Each Mac runs SD backup to its own second internal or external disk. I don't use Time Machine.
UPS could certainly be justifiable and I am not set against it ... but since I am quite willing to take on the risks of normal Leopard file-system recovery, I'd really like to know if there are additional risks during SD backup. I could also re-design where my data lives, but again would like to understand risks. I don't seem to have gotten a clear enough answer for that, sadly.
I'll mull on your suggestions, and in the meantime perhaps someone who knows and is willing can simply tell me "No, SuperDuper is no more likely to corrupt the source disk beyond journalled-recovery than vanilla Leopard", or "Yes, it is significantly more risky to lose power during a SD backup so plan accordingly (get N UPS, or re-think data storage, or ...)".
Thanks.