Hello, all! > On 24 Jan 2018, at 17:41, Andy Higginson <a...@higgles.co.uk> wrote: > > I would agree with the Linux software RAID-1 mirror.
We started using ZFS on all servers. Another software option there. > This is what I do with a number of servers that I've set up (not just > Rivendell). One of my rules for mirrored systems (and for that matter > offline archives), is to use drives from different manufacturers. I know > that some people don't like this, however I work on the basis that is there > is an issue with a batch of drives, then you are not going to get 2 to fail > at about the same time. You have 3 companies to make your choice from - > Seagate, Toshiba and WD, and all of these will be from totally different > factories so you shouldn't come unstuck. HGST is one more to add to the list of reliable manufacturers. > > Andy > > > ---- On Tue, 23 Jan 2018 21:36:35 +0000 Cowboy <c...@cwf1.com > <mailto:c...@cwf1.com>> wrote ---- > > > Having said that, I'm a big fan of Linux software RAID-1 mirrors, > and an "on the shelf" backup. > Then, let 'em go until one fails. When that happens, either replace > the failed drive with one in-kind, and let the array rebuild, or create > another RAID-1 with a missing drive, and copy from the failed old > failed array onto the new "failed" array. When that finishes, add in the > missing drive to the new array, and let that array rebuild. This is mostly > a technique for upgrading to a larger size in-place without down-time. > If you have the drive slots, create the new array complete and copy to > it in one step. > > Having said all that, when one of the drives does fail, expect the other > half of that mirror, assuming same manufacturer, type, and age of drive, > to fail within three weeks of the first. > Usually, you'll have a day to get the data copied off of it before it goes, > but remember I did mention that shelf backup ! > My shelf backup is usually an rsync update weekly or so. > > -- > Cowboy > > http://cowboy.cwf1.com <http://cowboy.cwf1.com/> > > Manual, n.: > A unit of documentation. There are always three or more on a > given item. One is on the shelf; someone has the others. The > information you need is in the others. > -- Ray Simard -- Luka Cvetko Presenter, Technical Operations and IT Radio Študent, Svetčeva ulica 9, SI-1000 Ljubljana luka.cve...@radiostudent.si | +386 31 489 089
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