[Samba] Migrate DC from Small Business Server 2011 to Samba 4

[L.P.H. van Belle]

Small side note. 

Read this before you deside the new domainname. : 
https://tools.ietf.org/html/rfc2606 
https://tools.ietf.org/html/rfc6761
https://tools.ietf.org/html/rfc6762#appendix-G  < especially 

https://support.microsoft.com/nl-nl/help/909264/naming-conventions-in-active-directory-for-computers-domains-sites-and
https://social.technet.microsoft.com/wiki/contents/articles/34981.active-directory-best-practices-for-internal-domain-and-network-names.aspx

Its worth ready and i suggest make a table of it. 
If you look up for example all AD-DC rules, you'll end up with something like this. 
hostname.dom.tld  (15char)(.dom.tld 49chars)  so, max total 63 length chars for your AD-DC FQDN namings. 


Greetz, 

Louis


> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens 
> Amélie Le Jeune via samba
> Verzonden: donderdag 19 december 2019 9:13
> Aan: Thor
> CC: samba
> Onderwerp: Re: [Samba] Migrate DC from Small Business Server 
> 2011 to Samba 4
> 
> Hello Thor, 
> 
> From our experience with one client whom had the same 
> situation as you, we first migrated exchange to another mail 
> system then we migrated the AD part. 
> The SBS version we had to migration only allowed a secondary 
> DC for a fixed period of time . 
> The Exchange mail extensions were properly handled by Samba, 
> even if they weren't used anymore. 
> I don't remember the exact version of SBS it was though. By 
> the way, a domain migration could still be a good idea since 
> you domain ends with a . local suffix. A .lan or 
> ad.yourpublicdomain.fr would be much better. 
> However you'll have to join computers but if you create a new 
> domain with the same SID from you old domain, you won't have 
> to migrate user's profiles or shares. 
> But in this case you can keep the exchange and the new domain 
> side by side and so migrate the domain first . 
> 
> Have a good day , 
> 
> Amélie 
> 
> Amélie LE JEUNE, Technicienne systèmes et réseaux 
> Tranquil IT 
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> 
> > De: "samba" <samba at lists.samba.org>
> > À: "samba" <samba at lists.samba.org>
> > Envoyé: Mercredi 18 Décembre 2019 16:41:37
> > Objet: [Samba] Migrate DC from Small Business Server 2011 to Samba 4
> 
> > Hi,
> 
> > I want to migrate a Windows Small Business Server 2011 
> domain controller
> > to Samba 4. The SBS2011 has about 40 users and 100 client computers.
> > Also about 50 GPOs are in use. Furthermore there is 
> Exchange running on
> > the SBS and it has to stay there for the next couple of 
> month (it will
> > be replaced by a new mail system later).
> 
> > So far I think I can either try to migrate or start from scratch.
> 
> > I guess migration can be done like this (and probably much 
> more steps):
> > * install Samba
> > * join Samba to the SBS domain
> > * sync SYSVOL folder from SBS to Samba
> > * move FSMO roles from SBS to Samba (is this even possible 
> with SBS?)
> > * actually then shutdown SBS, but wait... It needs to keep 
> running for
> > Exchange
> 
> > Or should I start from scratch like this:
> > * keep the SBS running with old domain (mydomain.local)
> > * keep Exchange on the SBS. Should still be possible to connect with
> > Outlook.
> > * install Samba
> > * set up a new domain: mydomain.com
> > * create all users with new passwords by a script on Samba server
> > * connect all computers to the new domain (do I have to do 
> this manually
> > or is there a better way?)
> > * move the GPOs to new DC (how?)
> 
> > There are probably 1000 things more that I also should 
> think about...
> 
> > Thank you,
> > Thor
> 
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