On Wed, Dec 1, 2021 at 2:55 PM Michelle <[email protected]> wrote:
> I'm trying to achieve a resilient way of bringing together all my older > drives for a backup solution using scraps of whatever I can get my > hands on. > > I have closing on 12TB of data so even the 10 won't be enough to back > everything up, but this is as much for the exercise of doing it, as > achieving anything solid. It won't be under pressure, but I'd rather > push the envelope and see what I can do. > > So how would the command go? > > zpool create tank raidz mirror drive1 drive2 mirror drive3 drive4 > drive5 > > ...which is where I come unstuck with the 2TB drive in the mix. > > > A few days ago I lost many weeks of work because my drive #1 / 3 died , not synchronized into #2 / 3 and #3 / 3 . This made the computer unbootable . I replaced the failed disk and synchronized it with #2 . The disk #3 failed and made the computer unbootable . I replaced that disk and synchronized it with #2 . The #1 disk was new but bought approximately 5 year ago . You are saying your disks are older . One "safe" but slow choice would be the following . Use external USB docks for each of your disks and make their file systems compatible with your computer ( if your disks have other file systems ) . With your synchronization shell scripts (1) mount (2) rsync (3) un_mount your drives by using cron or ( manually which this option is not a good choice ) . If any one of your disks fails , it will not affect your computer . This will be slow but without any other harm . The most suitable additional action may be to backup your data to external disks regularly . These disks will not be continuously connected to the computer and will not be affected by electricity harmful effects . OR You may use another computer ( such as a single board computer ) as an NFS server ( or a NAS if one is available to you ) , and use your drives in that server . Then synchronize your drives from your computer . If any disk fails , it only affects the server but your computer continues to work without affection . Mehmet Erol Sanliturk > > On Wed, 2021-12-01 at 11:17 +0000, James wrote: > > On 01/12/2021 08:31, Michelle wrote: > > > Say I was to put a 2tb, three 4tb and a 6tb together (a 2 and two 4 > > > would make 10 and the other 4 and the 6 would also make 10) > > > > > > Would that be possible with ZFS now? > > > > I think it has always been possible, ask is is sensible? Try it, if > > you > > have nothing to loose. The problem is if one drive fails is takes > > out > > all of one side of the mirror. > > > > Why not use 2 separate 4TB mirrors? 4&4 = 4, 4&6 = 4, total 8. You > > loose the 2TB drive completely but (guessing) it is the slowest and > > oldest. You ignore 2TB of the 6. > > > > You don't say what you are trying to achieve but it's unlikely you > > have > > the full 8TB of data, it is unlikely it can't be split. > > > > > > > > > > > > _______________________________________________ > > openindiana-discuss mailing list > > [email protected] > > https://openindiana.org/mailman/listinfo/openindiana-discuss > > > _______________________________________________ > openindiana-discuss mailing list > [email protected] > https://openindiana.org/mailman/listinfo/openindiana-discuss > _______________________________________________ openindiana-discuss mailing list [email protected] https://openindiana.org/mailman/listinfo/openindiana-discuss
