> Op 27 aug. 2019 om 11:38 heeft Max Krasilnikov <pse...@avalon.org.ua> het > volgende geschreven: > > Hello! > > Sat, Aug 24, 2019 at 10:47:55PM +0200, wido wrote: > >>> Op 24 aug. 2019 om 16:36 heeft Darren Soothill <darren.sooth...@suse.com> >>> het volgende geschreven: >>> >>> So can you do it. >>> >>> Yes you can. >>> >>> Should you do it is the bigger question. >>> >>> So my first question would be what type of drives are you using? Enterprise >>> class drives with a low failure rate? >>> >> >> Doesn’t matter. From my experience: With 2x replication you will loose data >> at some point. >> >> As a consultant I have just seen too many cases of data loss with 2x. >> >> Please, don’t do it. > > I'd like to ask: do the new features like checksumming fix this problem?
No, they don’t. Imagine you take a machine down for maintenance and while that machine is down you loose a disk. You lost data. Although you can bring back the other machine you are still missing transactions. This is not fictional, this happens. Same as that during the backfill of a disk you just lost the disk with the remaining copy dies under the load of the backfills. I have seen this happen too many times in the last years. Don’t try to cut corners. Wido > _______________________________________________ > ceph-users mailing list -- ceph-users@ceph.io > To unsubscribe send an email to ceph-users-le...@ceph.io _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
