Guest JVH Posted June 4, 2008 Posted June 4, 2008 Brief History: I've inherited 1 DC (2003) that freezes every few days requiring a restart and another DC (also 2003)that does absolutely nothing when the first one goes down. (DC2 had might as well be a member server.) Our Exchange server (2000) looks to DC1 and DC2 to authenticate users in our site and distant sites. So 500+ users can't access their email when DC1 freezes and DC2 does nothing. I brought another DC (DC3) online today and see no replication errors - using replmon. DC1 is FSMO, DNS, and DHCP server. DHCP If DC1 goes down - or if I remove and rebuild it - it will not be available to hand out IP's. My instincts tell me to create a DHCP scope on DC3 and assign a different block of addresses to the scope. Is this correct? Recommendations? FSMO I'd like to make DC3 FSMO in the event DC1 goes to the grave or has to be completely reloaded. Any steps I should take before delegating DC3 as FSMO? Hardware Problems and Event Logs Device drivers are all current per Dell. I've ran diagnostics on DC1 (Dell PowerEdge) with multiple passes enabled but it reports no problems. Is it likely that there is a hardware error that diagnostics are not reporting? And if so, would such problems not appear in the event logs? I hope I haven't asked too much. (This is my 1st post here.) Thanks, John -- JVH ------------------------------------------------------------------------ JVH's Profile: http://forums.techarena.in/member.php?userid=50429 View this thread: http://forums.techarena.in/showthread.php?t=980549 http://forums.techarena.in
Guest Meinolf Weber Posted June 4, 2008 Posted June 4, 2008 Re: Adding 3rd DC Hello JVH, see inline Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights. ** Please do NOT email, only reply to Newsgroups ** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm > Brief History: > I've inherited 1 DC (2003) that freezes every few days requiring a > restart and another DC (also 2003)that does absolutely nothing when > the > first one goes down. Mostly because it isn't DNS/DHCP/GC server. No roles, no work. > (DC2 had might as well be a member server.) Our > Exchange server (2000) looks to DC1 and DC2 How do you mean this, it looks to DC1 and DC2? BTW, is the exchange also DC? > to authenticate users in > our site and distant sites. So 500+ users can't access their email > when > DC1 freezes and DC2 does nothing. > I brought another DC (DC3) online today and see no replication errors > - using replmon. DC1 is FSMO, DNS, and DHCP server. You should also make a second DC a DNS server to have redundancy if one goes down. No DNS server, no user logon, because they are not aible to resolve the DC's. Use Active directory integrated zones, then you have it replicated via AD and full accessible. > DHCP > If DC1 goes down - or if I remove and rebuild it - it will not be > available to hand out IP's. My instincts tell me to create a DHCP > scope > on DC3 and assign a different block of addresses to the scope. Is this > correct? Recommendations? For DHCP create 2 DHCP servers which provide the same scope and split the scope with first half excluded on one server and second half excluded on the other server. So you have a full scope running and if one goes down, at least the half is available. Then you can easliy remove the exclusion range and have the full again until the other server is back. Before it is back, you have again to exclude the half. > FSMO > I'd like to make DC3 FSMO in the event DC1 goes to the grave or has to > be completely reloaded. Any steps I should take before delegating DC3 > as FSMO? Make sure with dcdiag /v, netdiag /v and repadmin /showreps that you have no errors on all DC's. In a single forest single domain environment it is also best practise to make all DC's Global catalog server. > Hardware Problems and Event Logs > Device drivers are all current per Dell. I've ran diagnostics on DC1 > (Dell PowerEdge) with multiple passes enabled but it reports no > problems. Is it likely that there is a hardware error that diagnostics > are not reporting? And if so, would such problems not appear in the > event logs? If your eventlogs are error free and if you don't realize unexpected reboots, really slow performance that comes up unexpected or something else that seems not software related, it should be fine. > I hope I haven't asked too much. (This is my 1st post here.) No. > Thanks, > > John > > http://forums.techarena.in >
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