@dthenot
I have been able to migrate all vms over to qcow2. Think shutting down the vms and booting backup. Alos if anything from this thread might have had an impact. https://xcp-ng.org/forum/topic/12087/backups-with-qcow2-enabled/9
@acebmxer NFS remotes on the DS1819+ ?
we have iSCSI SR (25Gb mellanox 6 PIFs on hosts to 25Gb MSA2062 SAN dual controller)
our remotes are iSCSI os mounted volumes on MSA SANs, presented as S3 (minio VMs)
using XO PROXIES to offload backups from XOA
we max out a 150/200Mb/s during backups
but we are on VHD VDIs, asking myself if the added backup performance you present could be due to QCOW2 format on source SR ?
will have to try VDIs on such SR to see the diff
Different use cases: Ceph is better with more hosts (at least 6 or 7 minimum) while XOSTOR is better between 3 to 7/8.
We might have better Ceph support in the future for large clusters.