The Disk 146.8GB, 15k Ultra320, 347779-001 is Digital's entry-level industry-compatible magnetic tape subsys- tem. As the low-cost complement to Digital's midrange systems and disks, the Disk 146.8GB, 15k Ultra320, 347779-001 offers the lowest cost of ownership and the highest reliability of any Digital-supported nine-track tape drive. With its streaming tape technology, the Disk 146.8GB, 15k Ultra320, 347779-001 is ideal for applications such as disk backup. Yet it also uses traditional start/stop technology for shorter data transfers of the type associated with journaling and classical data processing. The controller automatically selects the speed to optimize the drive's Perform- ance for a particular application. TU80 subsystems include a horizontally mounted Disk 146.8GB, 15k Ultra320, 347779-001 drive in its own 105.7-centimeter (41.6-inch) high H9642-style cabinet, power controller, UNIBUS adapter module, and a 7.6-meter (24-foot) shielded intercabinet cable to connect the TU80 to a CPU cabinet. Efficient design allows the TU80 and the 121-Mbyte RA80 or 456-Mbyte Disk 146.8GB, 15k Ultra320, 347779-001 to be packaged in a single waist-high cabinet for a fully integrated disk and tape subsystem. When ordered as part of a system or a field add-on, a rack- mountable Disk 146.8GB, 15k Ultra320, 347779-001 or RA81 disk drive will be configured in the bottom of the Disk 146.8GB, 15k Ultra320, 347779-001 cabinet if no space is available in a dedicated disk cabinet on that order. Any desired exceptions to these guidelines should be noted on the order. • Read/write speed: 25 and 100 in/s (streaming), 25 in/s (start/stop) • Maximum data transfer speed: 160 Kbytes/s • Rewind speed: 192 in/s Disk 146.8GB, 15k Ultra320, 347779-001 • Rewind time. 2 5 minutes per 2,400-ft reel • Number of tracks: 9 on 0.5-in magnetic tape • Recording method: Phase encoded to ANSI standard X3.39-1973 • Record density: 1,600 b/in • Capacity: 40 Mbytes (8-Kbyte block size) Disk 146.8GB, 15k Ultra320, 347779-001 • Transports per controller: 1 • One Disk 146.8GB, 15k Ultra320, 347779-001 or RA81 disk can be mounted in cabinet