Hello, 20.07.2022 20:13, GM пишет: > Have you tried to copy a large file directly from the host(s) to the nf > server, how's the speed on that? Yes, I try copy large file iso with rsync and the speed is no  more than 180MB/s - 210MB/s > Have you checked if there's a bandwidth limit set for the backups in pve > datacenter options? Yes, no limits Bandwidth set in Options. > Try running a single, manual backup on a specific vm to the nfs server, > how's its speed compare to the scheduled backups? Yes, in GUI I try the start one backup, the speed when start is up after is falling to same speed: In attach is from one host when is start backup and show speed to Synology. > On Wed, 20 Jul 2022 at 10:12, Сергей Цаболов wrote: > >> Hi, to all. >> >> In our PVE cluster have 5 hosts with ceph storage on all hosts disks. >> >> I setup backups to save on Synology with NFS storage. >> >> For 2-3 moths right now backups load very long time and not fast to >> finish backup from all hosts. >> >> If we change the MTU from default 1500 on Synology and on hosts to 9000 >> MTU is possible to make it fast. >> >> Synology and the hosts connect to the Fiber Optic 10GB switch but the >> mtu on switch and on the hosts for now is default. >> >> If I ping to Synology from hosts : >> >> ping -s 9000 -d 192.168.8.23 >> PING 192.168.8.23 (192.168.8.23) 9000(9028) bytes of data. >> 9008 bytes from 192.168.8.23: icmp_seq=1 ttl=63 time=1.03 ms >> 9008 bytes from 192.168.8.23: icmp_seq=2 ttl=63 time=0.223 ms >> 9008 bytes from 192.168.8.23: icmp_seq=3 ttl=63 time=0.229 ms >> >> I have the answer. >> >> When I test connection with between the hosts PVE connect : >> >> iperf3 -c 10.10.29.16 >> Connecting to host 10.10.29.16, port 5201 >> [ 5] local 10.10.29.10 port 51502 connected to 10.10.29.16 port 5201 >> [ ID] Interval Transfer Bitrate Retr Cwnd >> [ 5] 0.00-1.00 sec 1.07 GBytes 9.19 Gbits/sec 1089 639 KBytes >> [ 5] 1.00-2.00 sec 1.09 GBytes 9.38 Gbits/sec 52 1.17 MBytes >> [ 5] 2.00-3.00 sec 1.09 GBytes 9.38 Gbits/sec 0 1.23 MBytes >> [ 5] 3.00-4.00 sec 1.09 GBytes 9.37 Gbits/sec 0 1.27 MBytes >> [ 5] 4.00-5.00 sec 1.07 GBytes 9.20 Gbits/sec 608 789 KBytes >> [ 5] 5.00-6.00 sec 1.09 GBytes 9.38 Gbits/sec 45 1.09 MBytes >> [ 5] 6.00-7.00 sec 1.09 GBytes 9.37 Gbits/sec 0 1.26 MBytes >> [ 5] 7.00-8.00 sec 1.08 GBytes 9.28 Gbits/sec 411 872 KBytes >> [ 5] 8.00-9.00 sec 1.09 GBytes 9.33 Gbits/sec 114 1.14 MBytes >> [ 5] 9.00-10.00 sec 1.08 GBytes 9.30 Gbits/sec 321 676 KBytes >> - - - - - - - - - - - - - - - - - - - - - - - - - >> [ ID] Interval Transfer Bitrate Retr >> [ 5] 0.00-10.00 sec 10.8 GBytes 9.32 Gbits/sec 2640 >> sender >> [ 5] 0.00-10.00 sec 10.8 GBytes 9.31 Gbits/sec >> receiver >> >> But the speed to backup to NFS is very low. >> >> Can some one give me suggestion how I can make faster the NFS backup on >> hosts (all hosts is now production). >> >> -- >> Sergey TS >> The best Regard >> >> _______________________________________________ >> pve-user mailing list >> pve-user@lists.proxmox.com >> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user >> _______________________________________________ >> pve-user mailing list >> pve-user@lists.proxmox.com >> https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user >> > _______________________________________________ > pve-user mailing list > pve-user@lists.proxmox.com > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user -- Sergey TS The best Regard _______________________________________________ pve-user mailing list pve-user@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user