I have since come to understand what virtual memory is and how it would impact on an SSD, that it can be disabled on a HDD, but not necessarily and SSD. The answer, as always, would be more RAM, but that it should not impact a transfer, only the number of Apps open.
As for the the data...
I think the virtual space is on the RAM no? Regarding the SSD I wanted to know if it was a part of the process, which it doesn't seem to be.
I wasn't aware that it was a 40GB allowance per cell, rather than the whole SSD, can someone confirm this please.
SSD warranties seem to be measured in GB allowances per day and then giving a shorter lifetime of use e.g. 40GB per day for three years. I am unsure then if I will be unnecessarily shortening the life of an SSD if transferring large volumes of data between external HDDs?
For example, in OS X...