Connecting the office network to the VMware server network.

Hello,

I have a 4-node vSAN ReadyNode cluster connected to dual Juniper QFX5100s in a virtual chassis (VC). The rack right beside that has dual Juniper EX3400s in a VC for the office network. Currently they are connected via a trunk with dual 1Gig ports in a LACP LAG.

Would there be any benefit, besides avoiding STP, to change from a trunk to a L3 routed interface?

Should I be increasing from two to four ports in the LAG so that each switch in the server VC has a connection to each switch in the office VC? We're not close to maxing out the current link, unless backups start running in the evening.

For anyone else using QFXs, have you had to tweak the CoS buffer pools for optimal performance?

Any other suggestions/tips are appreciated.

Thanks