Chris, i think it does not depend weather the filespace *is* unicode, it
depends on the unicode client.

see following APAR from Tivoli web.

herfried



APAR= PQ54549  SER=                            IN INCORROUT
ANS1357S WHEN CONNECTING WITH NON-UNICODE CLIENT


Status: CLOSED                              Closed: 11/08/01

Apar Information:

RCOMP= 5698TSMVS    TIV 390 STORAGE RREL= R421
FCOMP= 5698TSMVS    TIV 390 STORAGE PFREL= F999  TREL= T
SRLS:      NONE

Return Codes:

Applicable Component Level/SU:
R421 PSY         UP

Error Description:
Once a unicode TSM client (V4.2.0 or higher Windows NT/2000
or V4.2.1.15 or higher Windows XP client)
has been used to connect to a TSM V4.2 server
with a given node name, that node name can no longer be
used by a non-unicode TSM client.  If you attempt to connect
with that node name using a non-unicode TSM client, you will

receive the following error: