Michael Burgin, 30, of Racecommon Road, was originally arrested in November 2018 and almost 3,000 category A images, more than 2,000 category B, more than 23,000 category C and almost 550,000 uncategorised images were recovered.
He admitted to one count of possession a prohibited image of a child, three counts of making indecent images and one count of possession of extreme images.
Burgin was sentenced to 15 months in prison and will be on the sex offenders’ register for ten years.