Anyone seen this problem?

I have performance problems when I copy large amounts of data between directories within the same volume on the NetApp. It is about 10 times faster to copy it back to my Sun box /tmp and then back to the filer.. I have a Cluster 820 with Gig NICs and the Sun box is a SunFire 280R, Solaris 8, with Gig NICs. No options with the mount commands.

No CRC errors on the switch, NetApps, or Suns...

Any ideas?

Thanks!