Installation guide

24 NetIQ eDirectory 8.8 SP8 Installation Guide
2.3 Hardware Requirements
Hardware requirements depend on the specific implementation of eDirectory. Two factors increase
performance: more cache memory and faster processors. For best results, cache as much of the
Directory Information Base (DIB) Set as the hardware allows.
eDirectory scales well on a single processor. However, NetIQ eDirectory 8.8 takes advantage of
multiple processors. Adding processors improves performance in some areas — for example, logins
— and having multiple threads active on multiple processors also improves performance. eDirectory
itself is not processor intensive, but it is I/O intensive.
The following table illustrates typical system requirements for eDirectory for Linux:
2.4 Forcing the Backlink Process to Run
Because the internal eDirectory identifiers change when upgrading to NetIQ eDirectory, the backlink
process must update backlinked objects for them to be consistent.
Backlinks keep track of external references to objects on other servers. For each external reference on
a server, the backlink process ensures that the real object exists in the correct location and verifies all
backlink attributes on the master of the replica. The backlink process occurs two hours after the
database is open, and then every 780 minutes (13 hours). The interval is configurable from 2 minutes
to 10,080 minutes (7 days).
After migrating to eDirectory, start the DSTrace process by issuing the
ndstrace -l>log& command,
which runs the process at the background. This allows you to properly analyze the results of the
backlinker process, which takes 4 to 10 minutes. Then force the backlink process to run by issuing the
ndstrace -c 'set ndstrace=*B' command from the DSTrace OS command prompt. Review the
results of the log file created in the first step. Then you can unload the DSTrace process by issuing the
ndstrace -u command. Running the backlink process is especially important on servers that do not
contain a replica.
2.5 Upgrading eDirectory
When upgrading eDirectory, you can use one of the following upgrade paths:
 Upgrade from an existing 32-bit version to a new 32-bit version
 Upgrade from an existing 32-bit version to a new 64-bit version
 Upgrade from an existing 64-bit version to a new 64-bit version
NOTE: There are no special steps to upgrade from a 32-bit version of eDirectory to a 64-bit version of
eDirectory. You can follow the same procedure as you would to upgrade from a 32-bit version to a
new 32-bit version.
Objects Memory Hard Disk
100,000 2+ GB 300 MB
1 million 4 GB 1.5 GB
10 million 4+ GB 15 GB