pdagent.exe is a Perfect Disk Agent
from Raxco Software, Inc.
belonging to PerfectDisk
. This allows the PerfectDisk Client to communicate through the network.
Non-system processes like pdagent.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues