Network configuration for the CIFS and NFS || Multiple Trunk

The following is the image attached about the configuration.

It is a stacked switch

Network Configuration:

CGE0+CGE1= TRK0

CGE1+CGE2= TRK1

TRK1+TRK0=TRK01

On the switch side the Port group is created out of CGE0 CGE1 CGE2 and CGE3

I just have some queries:

1. What is the overall throughput?
2. What if the CGE0 Fails?
3. What if the CGE0 and CGE 2 Fails?
4. And is it recommended?