Yes, You can.  I did it for several weeks.

> ----------
> From:         Karima El Mokadmi[SMTP:f035219 AT FR.IBM DOT COM]
> Reply To:     ADSM: Dist Stor Manager
> Sent:         Thursday, November 19, 1998 9:52 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      V2 server with a V3 client
>
> I know that i can use a V2 client with a V3 server
>  but can i use a V3 client with a V2 server
>
>
> karima
>