Anyone Migrate Heavy-Usage NFS Server from Sun to SLES 9?

Just curious if anyone has moved a solaris based NFS server(s) to SLES 9. (NFS servers with heavy enterprise load with say 5 TB+ of data) We tried moving these systems to Linux a few years back using the 2.4 kernel but due to the scheduler issues in pre 2.6 kernels it failed miserably. I was hoping the 2.6 kernel was up to the task so we can finally purge Sun and Veritas from our enterprise. Thx for any info