Maintaining Novell eDirectory
519
n
ov
do
cx (e
n)
22
Ju
n
e 20
09
19.1.3 Deploying ARC
ARC is usually deployed on a server-to-server basis. Those servers that are ARC - enabled can know
the new costing information.
You should patch all the servers to 8.7.3.9 ftf3 and eDirectory 8.8 servers to 8.8.2 version and then
enable ARC on each server in the environment.
Deployment Considerations
It is not useful to enable ARC on all servers.
Figure 19-4
shows a situation that could impact the
efficiency of LDAP servers. In the figure, S4 holds a copy of the green partition, but not of the blue
partition. Any chaining LDAP request that requires information from the blue partition needs to
walk to the S1, S2, or S3 servers to be fulfilled. This works in most cases, and ARC is designed for
just such situations.
Figure 19-4
ARC Deployment Considerations
However, performing specific LDAP operations could be difficult. Although it is possible to add a
user, for example, Bob.Blue.Novell, the operation might fail when you try to immediately return to
modify Bob. The figure shows Bob added on S2, but modifying Bob on S3 has failed because S3 has
not yet synchronized with S2, so S3 has not yet received Bob. ARC has the capability to direct you
to a different server, because ARC is more dynamic than the original costing method.
This configuration works well in scenarios where the server costs don't vary much and they don't
have problems synchronizing. Disabling ARC on S4 resolves this issue.
Summary of Contents for EDIRECTORY 8.8 SP5
Page 4: ...4 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 72: ...72 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 118: ...118 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 130: ...130 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 188: ...188 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 222: ...222 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 240: ...240 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 264: ...264 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 290: ...290 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 322: ...322 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 540: ...540 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 548: ...548 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...
Page 616: ...616 Novell eDirectory 8 8 Administration Guide novdocx en 22 June 2009...