On Oct 19, 2006, at 10:16 PM, J. C. O'Connell wrote:

> Depending on the compression algorithms/format, original file size and
> Compression levels the time to compress/save and uncompress/open
> Can be noticed (at least on my machine ).
>
> You asked/wondered why anyone would not use compression and I told
> You why. That's all. For me, I prefer the speed to saving space.
> For archival stuff I put on DVDs. Sounds like you prefer to keep
> Everything on the HDDs. To each his own and for different reasons.

Agreed.  After all the conflicting studies on CD and DVD longevity,  
many pro photographers have chosen to use multiple hard drives  
instead. Of course everything is mirrored onto more than one hard  
drive.  Some even do the backup weekly and keep the mirror hard drive 
(s) in a separate location. I know one person who keeps the backup in  
a bank safe deposit box, but that seems a bit extreme to me.

Personally, I suspect hard drives will become extinct in the near  
future as flash memory keeps getting cheaper.  I have already read  
that computer makers are working on a new generation of laptops that  
will use flash memory instead of hard drives.  No moving parts should  
make flash memory outlast hard drives by a long span.

I still do back things up onto CD and DVD, but that's just one more  
level of security.

Bob

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