Qos on network

ACHOU_SIMG — Wed, 04 Jun 2025 18:29:21 GMT

Hi,

ONTAP 9.1RC1

FAS8040HA

I have data LIFs on 10GbE connections. In the meantime, we need to use the 10GbE for NDMP backups as well. I am concerned about NDMP backups traffic can saturate the 10GbE connections and cause service interruptions on the data traffic. I look into network management guide, it mentions about "QoS marking" can be set to prioritize *outgoing* traffic per IP Space. My questions are:

- Unfortunately, there is only one IPspace "Default" in the configuration.It looks like if I change the value DSCP values, it will affect all?

- It seems to me smaller value means higher priority? I don't see it mentioned in the guide.

- Currently all protocols have it disabled. What happens if I enable only NDMP with lower priority such as 50? Is it sufficient to ensure it won't impact CIFS/NFS/iSCSI traffic?

Default
                    CIFS                 10 false
                    FTP                  48 false
                    HTTP-admin           48 false
                    HTTP-filesrv         10 false
                    NDMP                 10 false
                    NFS                  10 false
                    SNMP                 48 false
                    SSH                  48 false
                    SnapMirror           10 false
                    Telnet               48 false
                    iSCSI                10 false

Thanks,

Re: Qos on network

victor_munoz — Thu, 15 Dec 2016 16:16:39 GMT

With ONTAP9 you can apply QoS in IOPS & BW at the same time for the same volume. So set BW QoS limit for the volume / SVM to ensure the NDMP operation doesn't consume all your bandwith.

I think would be easier than start playing with network priorization

Regards,

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Qos on network

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