On Sun, September 7, 2014 9:30 pm, John R Pierce wrote: > On 9/7/2014 7:19 PM, Dave Stevens wrote: >> I want to set up a new CentOS install using version 7 and would like >> to experiment with various RAID levels. Anyone care to point out a >> tutorial? > > how many drives do you have for this experiment? whats the target > usecase for the file systems on the raid(s)? whats the level of data > resiliance required by said use case? > > Raid only protects against one specific sort of failure, where an entire > disk drive fails. It doesn't protect against data corruption, or > system failure, Even more: system failure or power loss is more likely to destroy all data on software RAID than on a single drive when there is a lot of IO present (to the best of my understanding, loss of cache software RAID is using is more catastrophic compared to journaled filesystem under same circumstances - somebody may correct me). So, there may be worth thinking about hardware RAID. Just my 2c. Valeri > or software failure or any other catastrophes. > > > > -- > john r pierce 37N 122W > somewhere on the middle of the left coast > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++