Sans Digital is announcing TowerRAID TR4X6G/TR8X6G, 4bay/8bay modularized mini SAS connection storage towers added to the current TowerRAID series' products. Both TR4X6G and TR8X6G come standard as diskless models. Hard drive and RAID controller bundles options are available. They also come with hot-swappable trays inside the attractive dust-resistant ventilating door. The ultra-quiet cooling system provides effective heat dispensing while remaining relatively noise-free.