Yes - NSF files can typically be transferred to and from multiple platforms. I myself use both the Windows and AS/400 platform, and have copied files between the two platforms.
The message File truncated is not a Notes-specific error, it typically means that when the file was copied it was either incomplete or damaged in the process. Pull another copy of the file and try again.
Another thing to be aware of is the ODS of the file - as long as the platform that you're copying the file to is a higher level, you should be able to read the file. However, copying from a higher level ODS to a lower level will cause you an error - I believe the message that you'll receive is 'Invalid NSF version' or something similar.
Pushing a replica using the Domino Administrator (or creating a replica from a Notes Client) will easily overcome an ODS level difference.