Active Directory Upgrade 2003 to 2008 question

here want (have do):

in order use adfs 2.0 have upgrade active directory 2003 active 2008:

- have 3 domains managing , 4 sites:

a) domain.com = ny

b) domain_1.com = va

c) domain_2.com = ma

- ny, ma, va , nc

d) nc site site connection dc @ site

my question is, can upgrade ny (primary site , dc) ad 2008 while other sites still function @ ad 200? in addition, have windows 2000 servers if have them in environment?

any guidance matther appreciated.

thank you

hello,

my question is, can upgrade ny (primary site , dc) ad 2008 while other sites still function @ ad 200?

when upgrading, have run:

• adprep /forestprep which prepares forest ad ds 2008
• adprep /domainprep which prepares domain ad ds 2008
• adprep /rodcprep if planning add rodcs. also, if want avoid having failures in ncsecdesc in dcdiag tests, have run it. note prepare ad forest rodcs.

as see here, there updates made @ forest level , such changes replicated dcs.

however, can prepare root domain add of 2008 dcs , there no problem that.

if member server there no problems. if dcs depends of dfl , ffl. more here: http://technet.microsoft.com/en-us/library/understanding-active-directory-functional-levels%28v=ws.10%29.aspx

to upgrade ad ds 2008: http://technet.microsoft.com/en-us/library/cc731188%28v=ws.10%29.aspx

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