For others googling later, there's also good user-level intro information in SLES and RHEL's doc sets http://www.google.com/search?q=raid+site%3Adocs.redhat.com http://www.google.com/search?q=raid+site%3Awww.novell.com%2Fdocumentation Re the concept of "official" in the concept of open-source, to me it means the docs maintained by those who "own" the project. Otherwise, there is often a "canonical" central location maintained by the community, which although perhaps not complete nor kept up to date should at least point to the more authoritative sources for those learning about the topic. My two cents: I for one would vote for http://raid.wiki.kernel.org/ as this, and since Neil's time is better spent coding than updating user-level docs, those of us that would like to see better-maintained documentation should dig in and help create it. Of course whatever Neil can find the time to add at dev-tech levels is invaluable, and should at least be pointed to by the "official" wiki. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html