License iLO - HP Integrated Lights-Out
Integrated Lights-Out, or iLO, is a proprietary embedded server management technology by Hewlett-Packard which provides out-of-band management facilities. The physical
connection is an Ethernet port that can be found on most Proliant servers of the 300 and above series.
iLO has similar functionality to the lights out management (LOM) technology offered by other vendors, for example Sun/Oracle's LOM port, Dell DRAC, the IBM Remote Supervisor Adapter and Cisco CIMC.
iLO makes it possible to perform activities on an HP server from a remote location. The iLO card has a separate network connection (and its own IP address) to which one can connect via HTTPS. Possible options are:
Reset the server (in case the server doesn't respond anymore via the normal network card)
Power-up the server (possible to do this from a remote location, even if the server is shut down)
Remote system console (in some cases however an 'Advanced license' may be required for some of the utilities to work)
Mount remote physical CD/DVD drive or image
Access the server's Integrated Management Log (IML)
Can be manipulated remotely through XML-based Remote Insight Board Command Language (RIBCL)
Full command-line interface support through RS-232 port (shared with system), though the inability to enter function keys prevents certain operations
iLO provides some other utilities like virtual media (CD, floppy), virtual power and a remote console. iLO is either embedded on the system board, or available as a PCI card.
iLO is embedded or available on some HP ProLiant and Integrity servers.
Prior to iLO, Compaq created several other lights out management products. The original was the Remote Insight Board (RIB), which was available as an EISA or PCI expansion card. RIB was replaced with RILOE (Remote Insight Light-Out Edition), which was only available for PCI. The original RILOE was replaced with RILOE II. HP stopped manufacturing RILOE II in 2006. The final firmware version for RILOE is 2.53(A) dated 9 Mar 2004 and for RILOE II is 1.21 dated 5 July 2006.
For some ProLiant 100 series servers there is a "Lights Out 100" option, which has more limited functionality. The LO100 is a traditional IPMI BMC, and does not share hardware or firmware with iLO.
There have been multiple generations of iLO, each generation noted by a single digit number ("iLO 2"). Some generations of iLO are segmented into different editions, based on what features are licensed. iLO includes updatable firmware, for which HP periodically releases new versions.
iLOProLiant G2, G3, and G4 servers1.96 released 30 April 2014
iLO 2ProLiant G5 and G6 servers, model numbers 300 and higher2.29 released 7 October 2015
iLO 3ProLiant G7 servers1.88 released 24 Oct 2016
iLO 4ProLiant Gen8 and Gen9 servers2.54 released 7 July 2017
iLO 5ProLiant Gen10 servers1.10 released 12 July 2017