Hi,
DLP for windows
agent 32 Bit around 27 MB
and for 64 Bit around 36 MB.
Memory is around 20 MB when normal * edpa.exe and wdp.exe)
on disk around 100 MB.
https://www-secure.symantec.com/connect/forums/dlp-v12-agent-package-size-and-memory-utlization-post-installation