Thank you, all, for your feedback. From Mark Teehan :We've been running RAC on eGenera linux blades for about three years now (in singapore and other locatons)- currerntly we have 10.1 RAC and 10.2 RAC. The new opteron blades, with 32GB of RAM allow you to run quite a number of instances. The drivers can be a bit tricky as eGenera use their own virtual network interfaces and that may cause some stability issues. But we run a lot of business off eGenera's with no problems.
From Alex Gorbachev : I can say that our clients are quite happy with it and we have great experience with that platform. If you are interested in any particular detail, drop me a mail. From Matt Zito :We've got extensive experience with 10gR2 + egenera. Short story: RAC works equally well with egenera as normal hardware. Long story: since the egenera boxes look just like normal servers, there's no advantage either way. Egenera talks a good game about their software helping with RAC, but I've never seen a customer leverage their provisioning or anything like that to help make RAC easier to deploy (in fact, we've had a number of companies come to us to do RAC provisioning on egenera). I have heard people complain that the egenera interconnect is unstable under very high IO loads, but have not seen it myself. My .02 on the matter: Egenera is very expensive compared with what you can get by assembling your own hardware. The commoditization of high-speed compute connects using InfiniBand means that the last argument for Egenera - that you can dynamically create IO connections with high throughput - has gone away. Just go buy your hardware vendor of choice and get Topspin IB from Cisco with their IO allocation technology.
Hemant K Chitale http://web.singnet.com.sg/~hkchital -- http://www.freelists.org/webpage/oracle-l