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Domain Controllers in DR Site

Domain Controllers in DR Site

we have domain controllers in SiteA,  on  disaster recovery SiteB, we have a couple of domain controllers.
I would like to know if SiteA goes down, whether we need to seize Roles on the DCs in  SiteB

All DCs in both sites are Global Catalog enabled.

Thank you.
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Lee W, MVP
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If site A goes down you DO NOT seize roles.  You seize roles ONLY when site A is DESTROYED.  Unrecoverable.  AD will run fine for a period of time without the FSMO roles available.  If a fire destroys Site A, a truck drives through the building and crushes the servers, a tornado wipes it out, then you seize roles.  If it loses power or the building floods the first floor while the servers are on the second, you DO NOT seize roles.  You wait for the building to come back on line and resume operations.  (EXCEPTION - if the building is offline for more than 60 days (default tombstone time), THEN you seize roles.)
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ASKER

when I said disaster , I meant the servers are damaged.
SO we need to seize the roles. Correct ?

I believe if  siteA is inaccessbile for few days, and we need to use SiteB, then probably Seizing the ROles  is not needed. Though I wonder if a DC which is does not hold Operations Master role if it can service the password reset.
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Lee W, MVP
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Thank you