On Tue, 28 Nov 2006, Michael Huntingdon wrote:
When comparing cluster offerings, seems reasonable, that the additional $85-$100 would be factored in to any system/cluster purchase, for at least power up/down and reset?
A real IPMI card (not the fictious PCI/PCI-E one that sparked this thread) has a lot of functionality apart from controlling power: you can also do a soft shutdown (which PDUs can't - relative to another message), measure temperatures and fan speeds, get notifications when something is below or above a limit, access the machine logs to know if there was an error that you might have missed, etc. All of these without needing any kind of assistance from the OS (which can be shutdown or crashed...) and remotely via an IPMI client software which uses UDP for communication; in some cases you can even ssh into the BMC.
There is a very nice technology built into HP DLxxx systems that provides pre-failure analysis to system managers.
I don't quite get your point here... a similar technology is the base of IPMI. The fact that it has a different name and maybe different tools to access it doesn't make it really different in concept...
you might somehow have the desire to become a custom cable specialist?
Maybe I missed something in this thread, but the custom cabling was only mentioned for a Tyan IPMI card being made to work on a different mainboard that it was designed for - which makes the "custom" part really understandable. A real IPMI card communicates over a standard serial port or over a LAN port, both using standard cables.
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