And would drive storage requirements through the roof!!

I like it!

;)

Nathan.

Jonathan Loran wrote:
> 
> David Magda wrote:
>> On Feb 24, 2008, at 01:49, Jonathan Loran wrote:
>>
>>> In some circles, CDP is big business. It would be a great ZFS offering.
>> ZFS doesn't have it built-in, but AVS made be an option in some cases:
>>
>> http://opensolaris.org/os/project/avs/
> 
> Point in time copy (as AVS offers) is not the same thing as CDP.  When 
> you snapshot data as in point in time copies, you predict the future, 
> knowing the time slice at which your data will be needed.  Continuous 
> data protection is based on the premise that you don't have a clue ahead 
> of time which point in time you want to recover to.  Essentially, for 
> CDP, you need to save every storage block that has ever been written, so 
> you can put them back in place if you so desire. 
> 
> Anyone else on the list think it is worthwhile adding CDP to the ZFS 
> list of capabilities?  It causes space management issues, but it's an 
> interesting, useful idea.
> 
> Jon
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