Mathieu Baudier wrote: > My question is whether it is worth using one of type A (with SSD > drives) in order to host the critical data such as the web sites and > the subversion repository (critical in the sense that these services > should be fast, always available, and the related data as safe as > possible). Go with 10/15k RPM SAS, not Intel SSD or SATA if you want best availability. Intel SSDs have had firmware issues since they came out, I doubt we've seen the end of firmware changes on them. If you want even higher availability go with a better provider, this is a good cloud hosting provider which uses VMware and high availability storage - http://www.terremark.com/technology-platform/nap-data-centers.aspx http://vcloudexpress.terremark.com/ Looks like they have 4 locations in Europe, I haven't used them myself but went through a presentation for them last year very impressive, though they are pricey. If you have simple requirements it's probably not bad though(will be a few times more $ than the hosting provider your looking at, but hey you wanted fast, always available, and safe, those aren't cheap). You can provision machines yourself, manage a remote firewall, and load balancers from their web UI. nate