HP Visualize J5000 hp Visualize J5000, J7000 workstations owner's guide (a4978 - Page 105

Using Your Digital Data Storage (DDS) Tape Drive DDS Tape Drive and Cassette Descriptions DDS Tape Drive and Cassette Descriptions This section describes basic information needed for using your DDS tape drive and data cassettes. The DDS Drive The DDS-3 tape drive has a 3.5-inch form factor and a narrow single-ended SCSI interface. It incorporates data-compression capability and is a high-capacity, high-transfer-rate device for data storage on tape. With compression, a DDS-3 drive can store up to 24GB of data on a 125-meter tape. Storage Capacities The maximum storage capacities of different DDS tapes with and without data compression are shown in the following tables; Table 5-1 DDS3 Tape Drive Capacities Without Data Compression Tape Length DDS3 Capacity 60 meters 90 meters 120 meters 125 meters 1.3 GB 2.0 GB 4.0 GB 12.0GB DDS3 drives will write DDS1 on 60m and 90m tapes, DDS2 on 120m tapes and DDS3 format on 125m tapes. DDS3 format has the same track density as DDS2 but triples the linear bit density. This yields the non-intuitive native capacity (before compression) of 12Gbytes on a 125m tape. Chapter 5 105