Other features
| Native capacity |
23 GB |
| Form factor |
Internal |
Performance
| Burst transfer rate |
160 MB/s |
| Drive device, buffer size |
16 MB |
ProDATA Drive 23GB Internal SCSI BULK
Dust is the principal enemy of optical discs. That is why the BW-F101 internal drive has been designed to be completely airtight; dust is prevented from entering the case via either the mounting screw holes or the space between the top and bottom covers. The main entry point for dust is the shutter, but a dual-shutter mechanism has been adopted to ensure an airtight enclosure even with the media inside the drive. In addition, this drive is maintenance-free: an internal brush mechanism ensures periodic, automatic cleaning of the pickup lens to achieve the highest level of reliability.
"Professional Disc for DATA" drives support both CAV (constant angular velocity) and CLV (constant linear velocity) transfer modes when reading and writing data. In CAV mode the disc rotates at a constant speed, meaning that the transfer rate slows as the pickup approaches the center of the disc, but seek operations are fast (110ms average). In CLV mode the speed of the pickup is constant, so although seek operations take longer, the maximum transfer rate of 11MB/s is maintained at all times. The drive firmware automatically selects the Optimum mode to ensure the best overall performance. For example, if accessing a series of relatively small text files, CAV is used for fast seek times, but when reading large music or video files, CLV is employed to ensure the maximum transfer rate. The factory setting ensures that the drive automatically selects the optimum transfer mode. But if necessary the user can select the transfer mode: DIP switches allow selection of either CAV or Optimum mode, while any one of the three modes (CAV, CLV or Optimum) can be specified by a mode select command.
