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160-000276-001
November 15, 2000
ACCOUNT MANAGEMENT
QuickStart Rev 99a29 22 June 00
Hardware Requirements
Hardware requirements depend on the specific implementation of NDS.
For example, a base installation of NDS eDirectory with the standard schema requires
about 74 MB of disk space for every 50,000 users. However, if you add a new set of
attributes or completely fill in every existing attribute, the object size grows. These
additions affect the disk space, processor, and memory needed.
Two factors increase performance: more cache memory and faster processors.
For best results, cache as much of the DIB Set as the hardware allows.
NDS scales well on a single processor. However, NDS 8.5 takes advantage of multiple
processors. Adding processors improves performance in some areas, for example, logins
and having multiple threads active on multiple processors. NDS itself is not processor-
intensive, but it is I/O-intensive.
The following table illustrates typical system requirements for NDS eDirectory for Solaris.
Requirements for processors might be greater than the table indicates, depending upon
additional services available on the computer as well as the number of authentications,
reads, and writes that the computer is handling. Processes such as encryption and
indexing can be processor-intensive.
Forcing the Backlink Process to Run
Because the internal NDS identifiers change when upgrading to NDS eDirectory, the
backlink process has to 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).
Objects Processor Memory Hard Disk
100,000 Sun* Enterprise 4500 384 MB 144 MB
1 million Sun Enterprise 5500 2 GB 1.5 GB
10 million Sun Enterprise 6500 with
multiple processors
2 GB + 15 GB
