In terms of "off-line" storage for regular grade cybereyes, I just house ruled that they were able maintain 1d2 hours of information before you had to upload them wirelessly to an external source (for us, it was our commlinks), which could then transmit the data onwards to another source (a hacker's server, a Johnson's dead drop, etc) or just scramble it and hold it for later. Alphaware holds 1d2+2 hours of storage, Betaware holds 1d2+4 hours and Deltaware holds 1d2+6 hours, with ascending levels of clarity (higher pixel rate).