Gil,

For Instant Split, if a track is updated before it is copied it will be
copied out of order. 

The main difference between Instant Split and COW is that the Source data
will always be copied to the target location eventually, whereas with Copy
On Write only updated data is moved to the update pool or target volume.

Ron

> I think I understand CoW.  Instant Split is new to me.  So a couple
> questions:
> 
> o With Instant Split, what happens if some other process attempts to
>   update a block before the copy is complete?
> 
> o How does this behavior differ from that of CoW?
> 
> -- gil
> --
> StorageTek
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