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?
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
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