> On Oct 22, 2020, at 9:14 AM, Eneko Lacunza <elacunza@xxxxxxxxx> wrote: > > Don't stripe them, if one NVMe fails you'll lose all OSDs. Just use 1 NVMe drive for 2 SAS drives and provision 300GB for WAL/DB for each OSD (see related threads on this mailing list about why that exact size). > > This way if a NVMe fails, you'll only lose 2 OSD. > > Also, what size of WAL/DB partitions do you have now, and what spillover size? Generally agreed against making a single giant striped bucket. Note this may be a good use for RAID10 on WAL/DB if you are committed to multiple disks. I generally put WAL/DB on RAID10 boot disks. It’s important to have reliable WAL/DB, but also important that the machine actually boots in the first place. With enough RAM and non-interactive use, most of the boot bits will be cached so there is no contention for the channel. Happy for any critique on this as well! Brian _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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