WAN Accelerator Bottleneck

[Rick_M]

Hi,

I'm having trouble identifying the bottleneck on a backup copy job using WAN accelerators. I've read Target WAN is Disk IO on the target WAN accelerator cache - which is an all flash array LUN, but it's showing very little signs of use.

https://imgur.com/F79bs3S
https://imgur.com/a/rxXwohp

[HannesK]

Hello,
from my point of view, you don't need to troubleshoot anything. The values are not higher than 90%. I recommend not starting any investigations as long there is not one value permanently between 95 and 99%

Best regards,
Hannes

[Rick_M]

Thanks Hannes, that's good to know.

Are there any ways to improve the performance of the job? i've tried changing streams on the WAN accelerator upto 50 but it's still using a fraction of the WAN link.

[HannesK]

what bandwidth do you have and which version of VBR are you using?

With V10, there is a new "high bandwidth" mode... with 9.5 you will be limited around 50-100MBit/s. Streams only help with high latency. Otherwise they might even make it slower.