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Throttle NFS mount storage unit ?

We are using an HNAS NFS mount as a basic disk storage unit for the purpose of catalog backups.  when the full backup runs, the HNAS experiences significant packet loss per our NOC.  The backup runs for about 6 hours and into the normal work day.  Thus far I don't believe we've had any reported impact, but the packet loss has our NOC guys raising their eyebrows and worrying quite a bit.

i would like to find out if there is a way to limit the throughput to the NFS mount, from a Netbackup perspective.  I'm checking with our BCE but thought i'd shoot up a flair here too in case someone has been down this road already.

thank you

9 Replies

Re: Throttle NFS mount storage unit ?

Re: Throttle NFS mount storage unit ?

i'm aware of being able to limit bandwidth for clients as outlined in that link you sent me... just not sure that is applicable for limiting bandwidth to a basic disk storage unit. also, it mentions that some backup types aren't affected... would NBU_Catalog be in the affected catagory?  we would want to refrain from limiting bandwidth for the IP of our HNAS (because we are doing lots of NDMP backups, etc and don't want to slow those down) so i'm wondering if i could just create a unique hostname for the NFS mount to use, and apply the bandwidth limit to that only.  thanks

Re: Throttle NFS mount storage unit ?

@mikennedy

I have moved your post to NetBackup forum as this is not related to NetBackup 52xx or 53xx Appliance(s).

Re: Throttle NFS mount storage unit ?

Mike, unfortunately, NetBackup doesn't have any tools to limit bandwidth from media-server to storage unit because it's pretty uniq task. You can do it at OS level with some sort of traffic shapers.

Re: Throttle NFS mount storage unit ?

If you Google something like "Using QoS to limit bandwidth", you will get a number of links related to network switch (Cisco) and Microsoft links. Plus various other links...

Re: Throttle NFS mount storage unit ?

Mike,
did you already try to do some tuning with
Maximum concurrent jobs storage unit setting ?

It could affect bandwidth usage positively.

 

Re: Throttle NFS mount storage unit ?

@mikennedy - IP packet loss is a network issue, I my view you are looking in the wrong direction.

if you lower the bandwidth used for catalog backup, you are creating a workaround, not fixing the issues. You need to get a network technician to  look at the issue.

 

Re: Throttle NFS mount storage unit ?

we have max concurrent jobs set to 1 for the NFS mount storage unit


wrote:

Mike,
did you already try to do some tuning with
Maximum concurrent jobs storage unit setting ?

It could affect bandwidth usage positively.

 


 

Re: Throttle NFS mount storage unit ?

Mike, if this workaround is not acceptable, definitely check as previously Nicolai suggested