Anyone know if there's an option (either included in the latest SLES OS or available as an add-on) for some form of AD emulation?

The main purpose is to integrate a NetGear ReadyNAS for use with managing accounts (rather than rely upon "local" authentication/account management). The NetGear ReadyNAS does not have the ability to be an LDAP server (unlike the QNAP which apparently I should've bought instead, but the backup support is atrocious with the QNAP, IMO).

Specifically would be using this information on how to point the NetGear to the emulated domain:

(too bad it doesn't have just a plain LDAP redirect).

Would prefer "plain" SLES vs. OES and the DSFW (ugh).