  The aim of this note is to provide some results for stochastic convolutions
corresponding to stochastic Volterra equations in separable Hilbert space. We
study convolution of the form $W^{\Psi}(t):=\int_0^t
S(t-\tau)\Psi(\tau)dW(\tau)$, $t\geq 0$, where $S(t), t\geq 0$, is so-called
{\em resolvent} for Volterra equation considered,$\Psi$ is an appropriate
process and $W$ is a cylindrical Wiener process.
