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Message |
admin
Guest
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 Posted:
Thu Dec 23, 2004 10:52 am Post subject:
RUS design help! |
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if we have 2 exchange servers in domain Y - Exchange server A and Exchange
Server B, and RUS component is running on Exchange server A. I create 4 RUS
on Exchange server A and each RUS is associated to 4 different GCs in domain
Y.
However, 2 of the GCs are in the same AD site as exchange server A and the
other 2 GCs are in another AD site. the 2 AD sites are connected by a 512k
WAN link.
To summarize:
AD Domain Y
1. AD Site1 - Malaysia
- Exchange Server A
- GC 1
- GC2
- RUS1 -> GC1
- RUS2 -> GC2
- RUS3 -> GC3
- RUS4 -> GC4
2. AD Site2 - China
- Exchange Server B
- GC3
- GC4
My questions are
1. What happens if the Exchange Server A goes down? Will Exchange server B
be able to create/update/maintain address lists for the domain?
2. When there are few mailboxes created at both exchange servers, how do the
RUS'es publish new address list and how the AD replication works in this
scenario? Will all the RUS components update the dedicated GCs respectively
and independantly? of yes, won't that will increase the AD replication
overhead? Microsoft always says to have at least one RUS runnning on
exchange 2000/2003 in a domain... but what is the recommended no. of RUS and
the placement?
thanks
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Al Mulnick
Guest
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| Posted:
Fri Dec 24, 2004 9:27 am Post subject:
Re: RUS design help! |
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1. What happens if the Exchange Server A goes down? Will Exchange server B
be able to create/update/maintain address lists for the domain?
| Quote: | No, and why would you think it would? Why would you be adding new
users during that time anyway? Don't you have more important things to
be doing if the link is down? <g> What was the reason you put four
RUS objects in that small a domain? This is all one domain, correct?
|
Maybe you could give us a better idea of what you need to accomplish that
drove you to set it up this way?? As it is, it sounds like belts and braces
gone awry <G> but there may be more to the background details.
| Quote: | 2. When there are few mailboxes created at both exchange servers, how do
the RUS'es publish new address list and how the AD replication works in
this scenario? Will all the RUS components update the dedicated GCs
respectively and independantly? of yes, won't that will increase the AD
replication overhead? Microsoft always says to have at least one RUS
runnning on exchange 2000/2003 in a domain... but what is the recommended
no. of RUS and the placement?
That's a lot of questions all at once: Number of recommended
RUS...depends. I'm sure you're surprised. Usually you would have
more if you have a lot of accounts. By the description you've given,
you don't have that many directory objects that need to be updated.
That could be a mistaken assumption here, so please correct as
needed. How many objects do you have? I've seen 60K mail object
directories handled just fine with one RUS. I've seen smaller that
needed more but then again, they changed those objects A LOT!
|
AD replication? No, it shouldn't increase it really. Those changes will be
made and should collide in the site first. Then they'll go to the
bridgehead and replicate to other sites. Again, I'm assuming 2003 AD but...
The expectation is that the RUS that gets there first will update the
object.
I can't imagine why you have four RUS defined. I'm curious to find out
however.
"admin" <admin@test.com> wrote in message
news:OcsRWtK6EHA.1408@TK2MSFTNGP10.phx.gbl...
| Quote: | if we have 2 exchange servers in domain Y - Exchange server A and Exchange
Server B, and RUS component is running on Exchange server A. I create 4
RUS on Exchange server A and each RUS is associated to 4 different GCs in
domain Y.
However, 2 of the GCs are in the same AD site as exchange server A and the
other 2 GCs are in another AD site. the 2 AD sites are connected by a 512k
WAN link.
To summarize:
AD Domain Y
1. AD Site1 - Malaysia
- Exchange Server A
- GC 1
- GC2
- RUS1 -> GC1
- RUS2 -> GC2
- RUS3 -> GC3
- RUS4 -> GC4
2. AD Site2 - China
- Exchange Server B
- GC3
- GC4
My questions are
1. What happens if the Exchange Server A goes down? Will Exchange server B
be able to create/update/maintain address lists for the domain?
2. When there are few mailboxes created at both exchange servers, how do
the RUS'es publish new address list and how the AD replication works in
this scenario? Will all the RUS components update the dedicated GCs
respectively and independantly? of yes, won't that will increase the AD
replication overhead? Microsoft always says to have at least one RUS
runnning on exchange 2000/2003 in a domain... but what is the recommended
no. of RUS and the placement?
thanks
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admin
Guest
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| Posted:
Fri Dec 24, 2004 9:58 am Post subject:
Re: RUS design help! |
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Thanks Al for the valuable reply...
Basically below statements from Microsoft that drove me to design such a
way...
1. at least one RUS per domain to provide redundancy
2. if high latencies exists between 2 WAN link, it is recommended to have a
RUS associated with a GC in the remote location.
after reading your comments, I came to understand that actually one RUS
would just suffice...if the exchange server that holds the RUS component
fails, we can simply add another Exchange server to hold that role (but most
of the time, this is not necessary)... if a GC that is associated to the RUS
fails, we will just associate the RUS for the domain with another GC...
thank you very much
"Al Mulnick" <amulnick_No_SPAM@ncDOTrr.com> wrote in message
news:OI0MBiW6EHA.3616@TK2MSFTNGP11.phx.gbl...
| Quote: | 1. What happens if the Exchange Server A goes down? Will Exchange server B
be able to create/update/maintain address lists for the domain?
No, and why would you think it would? Why would you be adding new
users during that time anyway? Don't you have more important things
to be doing if the link is down? <g> What was the reason you put
four RUS objects in that small a domain? This is all one domain,
correct?
Maybe you could give us a better idea of what you need to accomplish that
drove you to set it up this way?? As it is, it sounds like belts and
braces gone awry <G> but there may be more to the background details.
2. When there are few mailboxes created at both exchange servers, how do
the RUS'es publish new address list and how the AD replication works in
this scenario? Will all the RUS components update the dedicated GCs
respectively and independantly? of yes, won't that will increase the AD
replication overhead? Microsoft always says to have at least one RUS
runnning on exchange 2000/2003 in a domain... but what is the recommended
no. of RUS and the placement?
That's a lot of questions all at once: Number of recommended
RUS...depends. I'm sure you're surprised. Usually you would have
more if you have a lot of accounts. By the description you've
given, you don't have that many directory objects that need to be
updated. That could be a mistaken assumption here, so please correct
as needed. How many objects do you have? I've seen 60K mail
object directories handled just fine with one RUS. I've seen
smaller that needed more but then again, they changed those objects
A LOT!
AD replication? No, it shouldn't increase it really. Those changes will
be made and should collide in the site first. Then they'll go to the
bridgehead and replicate to other sites. Again, I'm assuming 2003 AD
but...
The expectation is that the RUS that gets there first will update the
object.
I can't imagine why you have four RUS defined. I'm curious to find out
however.
"admin" <admin@test.com> wrote in message
news:OcsRWtK6EHA.1408@TK2MSFTNGP10.phx.gbl...
if we have 2 exchange servers in domain Y - Exchange server A and
Exchange Server B, and RUS component is running on Exchange server A. I
create 4 RUS on Exchange server A and each RUS is associated to 4
different GCs in domain Y.
However, 2 of the GCs are in the same AD site as exchange server A and
the other 2 GCs are in another AD site. the 2 AD sites are connected by a
512k WAN link.
To summarize:
AD Domain Y
1. AD Site1 - Malaysia
- Exchange Server A
- GC 1
- GC2
- RUS1 -> GC1
- RUS2 -> GC2
- RUS3 -> GC3
- RUS4 -> GC4
2. AD Site2 - China
- Exchange Server B
- GC3
- GC4
My questions are
1. What happens if the Exchange Server A goes down? Will Exchange server
B be able to create/update/maintain address lists for the domain?
2. When there are few mailboxes created at both exchange servers, how do
the RUS'es publish new address list and how the AD replication works in
this scenario? Will all the RUS components update the dedicated GCs
respectively and independantly? of yes, won't that will increase the AD
replication overhead? Microsoft always says to have at least one RUS
runnning on exchange 2000/2003 in a domain... but what is the recommended
no. of RUS and the placement?
thanks
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