Installing or Upgrading Novell eDirectory on Linux 49novdocx (en) 22 June 2009The following table illustrates typical system requirements for eDirectory for Linux:Requirements for processors might be greater than the table indicates, depending upon additionalservices available on the computer as well as the number of authentications, reads, and writes thatthe computer is handling. Processes such as encryption and indexing can be processor intensive.3.4 Forcing the Backlink Process to RunBecause the internal eDirectory identifiers change when upgrading to Novell eDirectory, thebacklink process must update backlinked objects for them to be consistent.Backlinks keep track of external references to objects on other servers. For each external referenceon a server, the backlink process ensures that the real object exists in the correct location and verifiesall backlink attributes on the master of the replica. The backlink process occurs two hours after thedatabase is open, and then every 780 minutes (13 hours). The interval is configurable from 2minutes to 10,080 minutes (7 days).After migrating to eDirectory, start the ndstrace process by issuing the ndstrace -l>log&command, which runs the process at the background. You can force the backlink to run by issuingthe ndstrace -c set ‘ndstrace=*B‘ command from the ndstrace command prompt. Then youcan unload the ndstrace process by issuing the ndstrace -u command. Running the backlinkprocess is especially important on servers that do not contain a replica.3.5 Upgrading eDirectory Section 3.5.1, “Server Health Checks,” on page 50 Section 3.5.2, “Upgrading on Linux Servers Other Than OES,” on page 50 Section 3.5.3, “Upgrading eDirectory on Existing OES,” on page 51 Section 3.5.4, “Upgrading eDirectory During OES 1.0 to OES 2.0 Upgrade,” on page 51 Section 3.5.5, “Upgrading the Tarball Deployment of eDirectory 8.8,” on page 51 Section 3.5.6, “Upgrading Multiple Instances,” on page 52 Section 3.5.7, “Disk Space Check on Upgrading to eDirectory SP5,” on page 53IMPORTANT: Ensure that supported version of SSP is installed on eDirectory 873 SPx beforeupgrading to eDirectory 8.8 SP5. For eDirectory 873 SP9, ensure that SSP 203 is installed. For eDirectory 873 SP10, ensure that SSP 206 is installed.Objects Processor Memory Hard Disk100,000 Pentium III 450-700 MHz (single) 384 MB 144 MB1 million Pentium III 450-700 MHz (dual) 2 GB 1.5 GB10 million Pentium III 450-700 MHz (2 to 4) 2+ GB 15 GB
