The extensions installed by the Exchange2K forestprep process DO include items that are part of the PAS, so it will trigger a complete GC replication. This may or may not be a big deal, depending on your topology and how much bandwidth you have to spare.
In a single-domain forest, all DCs already contain all attributes of all objects, so there's no additional 'GC replication' even if all DCs are GCs - at least that's how I understand it. If that's your case, then this should not be an issue. Guess I never tried to test the effect it might have later - E2K was the whole reason for moving to AD for us in the first place, so forestprep was part of our inital implementation. Dave -----Original Message----- From: Michelle Harmon [mailto:[EMAIL PROTECTED] Sent: Monday, March 17, 2003 9:40 AM To: [EMAIL PROTECTED] Subject: RE: [ActiveDir] Windows 2000 schema extension Roger's right about the schema extension triggering a full replication. I didn't find proof very many places, but here's one thing that I found: http://www.mcpmag.com/backissues/columns/article.asp?EditorialsID=413 "...Adding or removing an attribute from the Partial Attribute Set in Win2K triggers a complete rebuild of the global catalog. This results in a full replication of the global catalog to all GC servers in the forest..." So there you have it. Looks like you'll get replication of all partitions of the GC you made the changes on to all other GCs. As far as "the replication traffic generated will be greater if the directory is populated with a whole load of data," if you're asking what I assume you're asking (if the freshly extended schema + info contained in the new attributes will be more than the traffic from the freshly extended schema alone), then I would say yes. Seems like a trick question though. ;) -Michelle -----Original Message----- From: Graham Turner [mailto:[EMAIL PROTECTED] Sent: Monday, March 17, 2003 9:23 AM To: [EMAIL PROTECTED] Subject: Re: [ActiveDir] Windows 2000 schema extension Michelle, that is exaclty the technote i am looking for - we must be great minds thinking alike as i have found it only this AM in response to Roger's post my understanding (although this one of those things i just heard and not verified) was that schema extension is an operation that initiated full replication of all directory partitions. as such the replication traffic generated will be greater if the directory is populated with a whole load of data don't know if anyone has any further points on this ?? GT ----- Original Message ----- From: "Michelle Harmon" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, March 17, 2003 3:05 PM Subject: RE: [ActiveDir] Windows 2000 schema extension Graham: This may be what you're looking for: http://www.microsoft.com/exchange/techinfo/tips/AD_Tip01.asp -Michelle -----Original Message----- From: Graham Turner [mailto:[EMAIL PROTECTED] Sent: Monday, March 17, 2003 4:31 AM To: [EMAIL PROTECTED] Subject: Re: [ActiveDir] Windows 2000 schema extension Thanks for the reply posts there are some applications that need to use these attributes and also it seems that while schema extension can be carried out at any time, it nonetheless has an associated risk which for me is best carried out while the AD is not strictly in production and is there not an issue of performance - ie the replication of the other directory partitions which will take longer if the directory is fully populated with domain objects ?? GT ----- Original Message ----- From: "Roger Seielstad" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 12, 2003 1:33 PM Subject: RE: [ActiveDir] Windows 2000 schema extension > That brings up a good point. There's no reason the schema extension has to > happen now, unless you want to use the fields. > > -------------------------------------------------------------- > Roger D. Seielstad - MCSE > Sr. Systems Administrator > Inovis Inc. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] > > Sent: Wednesday, March 12, 2003 8:27 AM > > To: [EMAIL PROTECTED] > > Subject: Re: [ActiveDir] Windows 2000 schema extension > > > > > > What are your reasons for wanting your directory extended at > > this point. Will you at some point be upgrading to Exchange 2000. > > > > If you don't wish to keep your existing organisation and site > > names then you can happily go ahead with a new organisation. > > This will have no links to the existing Exchange 5.5 > > Organisation. If you decide to upgrade you will have to look > > at creating new mailboxes and putting in connectors etc. > > > > If you join the existing site you will need to put in the ADC > > etc. This will change your current Exchange 5.5 organisation. > > > > Jacqui > > > > > from: Graham Turner <[EMAIL PROTECTED]> > > > date: Sun, 09 Mar 2003 14:04:33 > > > to: [EMAIL PROTECTED] > > > subject: Re: [ActiveDir] Windows 2000 schema extension > > > > > > Mark, sorry for the delay in posting back here. > > > > > > As stated in the original post i am looking to complete the task of > > > schema extension with attributes added by Exchange 2000. > > > > > > the reason for this is to remove the "risk" of doing this > > once the AD > > > is in production. > > > > > > it was expected to be able to complete this exercise > > without impacting > > > any existing Exchange infrastructure (which by the way is at 5.5) > > > > > > however it seems that exchange 2000 setup wants to either join on > > > existing organisation or create a new organization. > > > > > > either way there seems an impact which as yet is unplanned > > and can't > > > be continued until fully assessed. > > > > > > was wondering if there was a way using ldap directory tools such as > > > ldifde to complete the necessary changes to the directory > > without any > > > exchange configuration. > > > > > > GT > > > > > > > > > ----- Original Message ----- > > > From: "Marc Zukerman" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Thursday, March 06, 2003 6:36 PM > > > Subject: Re: [ActiveDir] Windows 2000 schema extension > > > > > > > > > > What are your plans? Are you looking to set up a separate > > > > Organization? > > > Then > > > > set it up as a new orgnization within the forest. > > ForestPrep is the > > > answer. > > > > > > > > Are you looking to get an Exchange 2000 server in the > > existing 5.5 > > > > organization? If so, it will require joining the organization and > > > > the configuration of the ADC to update Active Directory with the > > > > Exchange 5.5 accounts. There isn't any way around that since > > > > Exchange 2000 doesn't have the ability to read the 5.5 directory. > > > > You can still manage your existing accounts in 5.5 if you > > like. You > > > > can even control the ADC not to update AD with the account > > > > information. But it requires the Site Replication Service to > > > > communicate within the same organization. > > > > > > > > If these aren't your restrictions, please give more information. > > > > > > > > Marc Zukerman > > > > Senior Network Engineer > > > > Greenwich Technology Partners > > > > ----- Original Message ----- > > > > From: "Graham Turner" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Thursday, March 06, 2003 12:23 PM > > > > Subject: [ActiveDir] Windows 2000 schema extension > > > > > > > > > > > > > I would like to be able to extend the schema to include the > > > > > attribute > > > set > > > > of > > > > > Exchange 2000. > > > > > > > > > > The one documented way of doing this is to use the "forestprep" > > > > > option > > > of > > > > > Exchange 2000 setup. > > > > > > > > > > However this seems to require information on any > > existing Exchange > > > > > organization / new organization and as such potentially > > impact any > > > > existing > > > > > Exchange organization. > > > > > > > > > > Given a scenario of there being an Exchange 5.5 organzation but > > > > > with no > > > > plan > > > > > for connectivity to the Active Directory , is there a way of > > > > > extending > > > the > > > > > schema without gonig through the "specifics" of either > > joining an > > > existing > > > > > organzation or creating new Exchange objects which may > > compromise > > > > > any > > > > future > > > > > Exch2000 implementation. > > > > > > > > > > This will enable us to perform this schema before going into > > > > > production. > > > > > > > > > > Thanks > > > > > > > > > > GT List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
