Backing up from inside each VM doesn't solve the problem If you have to backup 500VMs you just need more than 1 day and what if you have to restore the whole gluster storage?
How many days do you need to restore 1PB? Probably the only solution should be a georep in the same datacenter/rack with a similiar cluster, ready to became the master storage. In this case you don't need to restore anything as data are already there, only a little bit back in time but this double the TCO Il 23 mar 2017 6:39 PM, "Serkan Çoban" <[email protected]> ha scritto: > Assuming a backup window of 12 hours, you need to send data at 25GB/s > to backup solution. > Using 10G Ethernet on hosts you need at least 25 host to handle 25GB/s. > You can create an EC gluster cluster that can handle this rates, or > you just backup valuable data from inside VMs using open source backup > tools like borg,attic,restic , etc... > > On Thu, Mar 23, 2017 at 7:48 PM, Gandalf Corvotempesta > <[email protected]> wrote: > > Let's assume a 1PB storage full of VMs images with each brick over ZFS, > > replica 3, sharding enabled > > > > How do you backup/restore that amount of data? > > > > Backing up daily is impossible, you'll never finish the backup that the > > following one is starting (in other words, you need more than 24 hours) > > > > Restoring is even worse. You need more than 24 hours with the whole > cluster > > down > > > > You can't rely on ZFS snapshot due to sharding (the snapshot took from > one > > node is useless without all other node related at the same shard) and you > > still have the same restore speed > > > > How do you backup this? > > > > Even georep isn't enough, if you have to restore the whole storage in > case > > of disaster > > > > _______________________________________________ > > Gluster-users mailing list > > [email protected] > > http://lists.gluster.org/mailman/listinfo/gluster-users >
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