Dump files should be able to be compressed in a zip file, 7zip has a fairly high compression rate, just check and see if it comes down much from 12gb.
The aswNdis2.sys file is the avast! Firewall Core Firewall Service; c:\windows\system32\drivers\aswNdis2.sys
So I'm not sure how the firewall service would interact with perfectdisk 11.