[ceph-users] Re: How big an OSD disk could be?

We had a support case last year where we where forced to set the OSD limit to >4000 for a few days, and had more then 4k active PGs on that single OSD. You can do that, however it is quite uncommon. -- Martin Verges Managing director Mobile: +49 174 9335695 E-Mail: martin.verges(a)croit.io Chat: https://t.me/MartinVerges croit GmbH, Freseniusstr. 31h, 81247 Munich CEO: Martin Verges - VAT-ID: DE310638492 Com. register: Amtsgericht Munich HRB 231263 Web: https://croit.io YouTube: https://goo.gl/PGE1Bx On Sat, 13 Mar 2021 at 14:29, Dan van der Ster <dan(a)vanderster.com> wrote: > > On Fri, Mar 12, 2021 at 6:35 PM Robert Sander > <r.sander(a)heinlein-support.de> wrote: > > > > Am 12.03.21 um 18:30 schrieb huxiaoyu(a)horebdata.cn: > > > > > Any other aspects on the limits of bigger capacity hard disk drives? > > > > Recovery will take longer increasing the risk of another failure in the > > same time. > > > > Another limitation is that OSDs should store 100 PGs each regardless > of their size, so those PGs will each need to store many more objects > and therefore recovery, scrubbing, removal, listing, etc... will all > take longer and longer. > > per OSD eventually, (meaning also that PGs per cluster needs to scale > up too!) > > Cheers, Dan > > > Regards > > -- > > Robert Sander > > Heinlein Support GmbH > > Schwedter Str. 8/9b, 10119 Berlin > > > > http://www.heinlein-support.de > > > > Tel: 030 / 405051-43 > > Fax: 030 / 405051-19 > > > > Zwangsangaben lt. §35a GmbHG: > > HRB 93818 B / Amtsgericht Berlin-Charlottenburg, > > Geschäftsführer: Peer Heinlein -- Sitz: Berlin > > > > _______________________________________________ > > ceph-users mailing list -- ceph-users(a)ceph.io > > To unsubscribe send an email to ceph-users-leave(a)ceph.io > _______________________________________________ > ceph-users mailing list -- ceph-users(a)ceph.io > To unsubscribe send an email to ceph-users-leave(a)ceph.io