Hariho ibyiciro byinshi byakwerekana:
1. Ukurikije imiterere, theErekana Rackirashobora kugabanywamo muri: amezaErekana Rack, Igorofa yerekana guhagarara, kumanika kwerekana, kwerekana ibintu bidasanzwe bya rack, insanganyamatsikoKugaragaza hasi,Kuzunguruka Ikadiri Yerekana, Kwerekana Magnetiki Kwerekana, nibindi .
2. Dukurikije imikorere, ibyerekanwa birashobora kugabanywamo: ukurikije ikoreshwa rya elegitoroniki yerekana guhagarara,Esmetic Yerekana Rack, Inzoga n'ibitambara byerekana ikadiri, ibiryo byerekana ibiryo, kwerekana imitako, kwerekana imurikagurisha, kwerekana amakuru, etc kwerekana, nibindi {0}
3. Ukurikije ibikoresho, kwerekana birashobora kugabanywamo muri: icyuma cya acrycErekana Rack,kwerekana ibiti, ibikoresho bikubiyemo kandiImpapuro zerekana rack.