[DRBD-user] DRBD9 sync speed

Emmanuel Florac eflorac at intellique.com
Mon Jun 20 14:47:29 CEST 2016

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Le Sun, 19 Jun 2016 08:56:18 +0200
Piero Baudino <pbaudino at formatnet.it> écrivait:

> Hi all,
> 
> I have a cluster with 2 PVE servers with DRBD9.
> The replicated volume is about 7 Tb, the disks are 7200 rpm near line
> SAS. The communications channel for DRBD9 is done via 4 Gbit
> dedicated network cards in bond configuration (round robbin).
> I have created a VM with 1 Tb disk for test purpuse in the DRBD
> volume. After that, DRBD starts sync...
> The sync speed is about 10 Mbyte/sec
> The effective network speed misured with IPERF is about 3,6 Gbit/sec
> 
> Is there a way to increse sync speed ?
> All the docs about this topic are related to 8.x.y DRBD version....


See this thread maybe:
http://www.gossamer-threads.com/lists/drbd/users/27675

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