>> - can have 6 (2+2) w/ 0 spares providing 6000 GB with MTTDL of
>>     28911.68 years
>>     
>
> This should, of course, set off one's common-sense alert.
>   
So true, I pointed the same thing out in this list a while back [sorry, 
can't find the link] where it was beyond my lifetime and folks responded 
that the "years" unit should not ne taken literally - there are way too 
many variables to cause wild mischief with these theoretical numbers


> If you don't want to risk losing data, you need multiple -- off-site -- 
> copies.
>   
Har, har - like I'm going to do that for my personal family archive  ;)

> (Incidentally, I rarely see these discussions touch upon what sort of UPS is 
> being used. Power fluctuations are a great source of correlated disk 
> failures.)
>   

Glad you brought that up - I currently have an APC 2200XL 
(http://www.apcc.com/resource/include/techspec_index.cfm?base_sku=SU2200XLNET) 
- its rated for 1600 watts, but my current case selections are saying 
they have a 1500W 3+1, should I be worried?


Thanks!
Kent


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