back-end director %hit is 0

so I was checking on performance of our DMX1000s

I'm on ECC 6.0.0.806

first I dragged the sym to the performance window,

it shows write % between 10-15%

hit% is between 90-98%

next I dragged each DA to a separate performance window, they show an average of 65 write% and 0%hit, am I to interpret this as nothing is hitting the cache?

thanks