ONTAP 9.8 SVM/CIFS interfaces and routing archirecture for FlexPod Windows Server 2016/SMB

Hello.

I'm trying to build FlexPod configuration for Hyper-V with Windows Server 2016 SMB only VM storage using this guide: https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/UCS_CVDs/flexpod_mspc_ws2016.html

Hardware is: NetApp FAS2552A (2-Node Clustered ONTAP 9.8), Cisco UCS B22 Servers, Nexus 2x6248UP, Nexus 2x5548UP.

Do not need boot from SAN (use HDDs for hosts boot) and use 10GB SMB only data access.

So, my questions are:

1. When I create SVM (svm0) using GUI and especially CIFS service on it: 2 IPs for data lifs for node1/node2 are requested and ability to create  separate SVM management interface exists:

- do data lifs need to be on the same L2 network for both nodes or not?

- why two lifs for same service and how client uses them: do i need to register both data inerface IPs as two A records in DNS? what role for second node IP address - both nodes serve data same time?

- when we create separate SVM management lif, it resides on separate MS-IB-MGMT subnet on FlexPod solution: how routing table of SVM looks like? SVM needs to access AD/DNS using management lif default gateway (or not this lif?), same time CIFS service serves data for clients on separate ip subnet and needs defaul gateway for that too. Does SVM management interface have own routing table inside SVM and CIFS dervice uses ints own table too? If no, we have two default gateways in SVM routing table.

2. Second question (optional) if exactly about FlexPod solution:

- as stated they create two separate SMB vlans with diffeten tags and IP subnets:

It is not clear for me (sorry for this) why we need two SMB subnets for same service? And this is unclear int reference guide which vlans they use for SMB LIFs creation (search "Create SMB LIF" in text):

network interface create -vserver Infra-MS-SVM -lif smb_lif01 -role data -data-protocol cifs -home-node <st-node01> -home-port a0a-<infra-smb-vlan-id> –address <node01-smb_lif01-ip> -netmask <node01-smb_lif01-mask> -status-admin up –failover-policy broadcast-domain-wide –firewall-policy data –auto-revert true

network interface create -vserver Infra-MS-SVM -lif smb_lif02 -role data -data-protocol cifs -home-node <st-node02> -home-port a0a-<infra-smb-vlan-id> –address <node02-smb_lif02-ip> -netmask <node02-smb_lif02-mask>> -status-admin up –failover-policy broadcast-domain-wide –firewall-policy data –auto-revert true

Great thanks for any help!