topic Re: Snapvault / SnapMirror bandwidth requirements in ONTAP Discussions

Snapvault / SnapMirror bandwidth requirements

pateljayesh — Thu, 05 Jun 2025 07:29:55 GMT

Are their any tools availabe for sizing bandwidth requirement for Snapvault replication, is FCP link better over IP links if distances are <10km between primary and secondary filers.

I am also trying to find any useful guides, if available, on processor / memory utilization overheads as a result of using snapvault/snapmirror.

Thanks

Re: Snapvault / SnapMirror bandwidth requirements

z902129mf — Mon, 16 Mar 2009 21:01:00 GMT

I think both of these have parameters to limit their bandwidth consumption.

For example:

"Snapmirror update" command's "-k" option allows you to throttle the transfer rate at KB/s.

For SnapVault, you have "snapvault start -k" flag and "snapvault update -k" flag to set your throttling speed~

Re: Snapvault / SnapMirror bandwidth requirements

danielpr — Wed, 18 Mar 2009 02:04:23 GMT

Yes as Ming said always you can control the transfer limit from Kb,You can find the Adjusting the TCP window size help page from the below link.

http://now.netapp.com/NOW/knowledge/docs/ontap/rel73/html/ontap/onlinebk/protecting/task/t_oc_prot_sm-adjust-tcp-window-size.html

Thanks

Daniel

Re: Snapvault / SnapMirror bandwidth requirements

jmerrill — Wed, 08 Apr 2009 18:10:06 GMT

Also, SnapVault doesn't support replication over FC, it's IP replication only.

In addition to the solutions mentioned above, you can set the SnapVault throttle for permanently using the "snapvault modify -k" option. This would need to be done for each SnapVault relationship, and is static (if a transfer is in progress, the new throttle won't be implemented until the next update). If you are using SnapMirror, there is a "snapmirror throttle" command that is a dynamic throttle.

Thanks!

Jeremy Merrill
Data Protection Solutions
Technical Marketing Engineer