Is it possible to set directory limits to more that 2TB on NSS volumes?

We charge clients for assigned capacity limits on their network data folders
and someone has requested more than 2 TB of available capacity. Is there
any way to accomodate this request?

The NSS pool is presently on a NetWare 6.5 SP8 server and we could expedite
our implementation of OES11 if that will solve the issue. I tested on one
of our OES2 (SLES10) servers and confirmed that 2TB is also the maximum
folder limit.

Will OES11 resolve this issue? Any other suggestions?