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TowerRAID TR8U-B - 8 Bay SATA to USB 2.0 JBOD / Spanning Enclosure


The TowerRAID TR8U-B is an 8-bay storage enclosures for high capacity storage needs. With built-in ventilating protective screen front panel, both units utilize cable-less backplane-design to support up to eight hard drives. Hard drives are installed on easy access hard drive trays for simple insertion and removal. Hard drive cooling is provided by a large 4.7” cooling fan located on the back of the units. The TR8U-B features JBOD mode for individual hard drive access. In addition to JBOD, both units support three different spanning modes, including 1 spanning set for 8 hard drives per set, 2 spanning sets for 4 hard drives per set, and 4 spanning sets for 2 hard drives per set. Storage modes could be selected via an easy access dip switch located on the back panel. Both units are environmental friendly with Auto-Power option, where the unit powers on only when the connected computer is on. Units are available in black (TR8U-B) and silver (TR8U) finish.


  • Supports eight 3.5-inch SATA hard drives to USB 2.0 interface, using a single USB 2.0 cable.
  • Selectable storage modes: hard drives space could be accessed individually (JBOD) or could be combined into larger volumes (spanning).
  • 3 spanning modes available: single spanning set with 8 hard drives, two spanning sets with 4 hard drives, and four spanning sets with 2 hard drives.
  • 2 selectable power modes: Normal Power Mode (manual ON/OFF), and Auto Power Mode (synchronized ON/OFF with the connected computer).
  • USB high-speed (480 Mbps), and backward-compatibles to full-speed (12 Mbps) data transfer.


 Model  TR8U-B
 Form Factor  Compact Tower
 HDD Trays  8 Hot-Swappable 3.5"
 RAID Level  JBOD or 3 different spanning modes:
 1 spanning set = 8 hard drives per set
 2 spanning sets = 4 hard drives per set
 4 spanning sets = 2 hard drives per set
 Maximum Capacity  16TB (2TB Per Volume)
 Host Interface & Transfer Rate  USB 2.0 
 Drive Interface  8 x 3.5” SATA I/ SATA II
 Cooling Fan  4.7" Ball Bearing Fan
 Power Supply  250W (90V-264V)
 Control Interface  N/A
 Status Indicators  Power LED
 Dimension (in)  5.9"W x 13.4"H x 13.4"D
 Weight (lb)  13
 Safety Regulations  CE, FCC, UL, RoHS
 Limited Warranty  1 Years
 Package Contents

 TR8U-B (1)
 Hard Drive Trays (8)
 Power Cord (1)
 USB 2.0 Cable (1)
 Screws (1 set)
 Quick Installation Manual & CD (1)

Available Models

Enterprise RAID Edition Hard Drive
 Model  TR8U-B  TR8U-B8E  TR8U-B16E  TR8U-B24E  TR8U-B32E
 Hard Drive  No HDD
 SATA II * 8
 SATA II * 8
 SATA II * 8
 SATA II * 8
 Storage Size
 N/A  8TB  16TB  24TB  32TB

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