Packet drops on destination NIC

[RyGy7]

So I have setup several desktops to use veeam endpoint and its been working great so far. But i've recently encountered a problem at about the same time each day. The backup destination is simply an old win7 computer with tons of storage. Here is what i see;

veeam client logs errors in the win event of 'network not found'

the destination veeam storage drops packets just pinging the client & the network utilization bounces up n down 15% - 40%

after a few re-tries and an hour all is good again. This is happening to about 5 clients that are running at that time. Now of course i could stagger better but I was wondering if anyone has tips to help the bandwidth on the destination PC.


Thoughts?

[PTide]

Hi,

Have you checked the resource monitor network tab on the destination machine?

Thank you.

[Dima P.]

RyGy7,

The backup destination is simply an old win7 computer

To clarify, are you using it as a VBR repository or a regular shared folder? What backup mode was configured in the endpoint? Thanks

[RyGy7]

Regular shared folder. and the network utilization i was referring to was on the destination, sorry for the confusion.

[Vitaliy S.]

Shawn, have you tried to check Windows Event log for this Win 7 server? Also have you tried to reduce the number of concurrently launched backup jobs? It seems like that target storage NIC card is overloaded when all jobs are running at the same time.

[RyGy7]

Unfortunately the event logs show nothing. I would have assumed so as well, but nothing in application / system / HW events / or windows network profile. I have 5 machines backing up to this which I will begin to stagger (hope i don't bang up against other machine times..lol)

What makes this just slightly odd to me is that it was not an issue until I altered the IP address on the server. Since then i have rebooted and flushed DNS. Also the backups eventually succeed so it is a flooding issue, just didn't think 5 machines was too much. I disabled tcp offloading last week but clearly didn't help.

thanks

[Vitaliy S.]

Do you have Veeam B&R in your infrastructure?

[RyGy7]

No, just a shared folder. At this point I am going with faulty NIC and replacing with two PCI cards. I'll reply back if I resolve with this.

[Vitaliy S.]

Ok, keep us updated on your upgrade results.

[RyGy7]

Issue resolved!! Another Admin expanded our dhcp scope last week. Which then extended into the IP address of my backup destination. I had concerns that duplicate IP's were an issue but I was unable to prove it in the times i brought down the box. Turned out to be a Samsung phone...woopsie!

Set a new IP and all seems fine.

[Vitaliy S.]

Nice catch, good to know that you're up and running now.