I believe [SMS/MMS/APN] Dialer Storage is the restore option for sms/mms on a stock phone or a stockish rom. However it's system data so as with any such item, be careful restoring and I don't know that I'd be too apt to do this on many custom roms anyway.
For example, on BAMF, it's listed as:
[SMS/MMS/APN] Phone/Mesaging Storage 4.0.3-eng.chaos.xxxxxxxxxxxxx
So I think that may not play well when restoring across other roms. I don't care about saving sms/mms anyway, but if I were, I think I'd use an alternate method. Cloud service or similar.