On 12/24/2010 7:57 AM, Markandeya wrote: > Dear Friends of CentOS, > I read a reply by John R Pierce, Re: [CentOS] LVM change disk > December 04, 2010 01:30PM > "do you realize that if any one of those 4 miscellaneous drives fails, > you lose the whole volume?" > > Can anyone confirm this? and thank you to John above. > > 2: can you add(extend) a physical hdd with data to a LV without losing the data? > > 3: can you remove one hdd to add another of same size and file system > but with different data? > > Thanks much. i am about to install and need to know my constraints. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos this is why RAID is still needed. LVM isn't a fault tolerant thing..RAID is still required.