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DDS tape drive (bottom). Above, from left to right: DDS-4 tape (20 GB), 112m Data8 tape (2.5 GB), QIC DC-6250 tape (250 MB), and a 3.5" floppy disk (1.44 MB). A tape drive is a data storage device that reads and writes data on a magnetic tape. Magnetic-tape data storage is typically used for offline, archival data storage. Tape media generally ...
Subsequently, tape libraries became physically automated, and as such are sometimes called a tape silo, tape robot, or tape jukebox. These are a storage devices that contain one or more tape drives , a number of slots to hold tape cartridges , a barcode reader to identify tape cartridges, and an automated method for loading tapes (a robot).
In the past, the host block size affected the data density on tape, but on modern drives, data is typically organized into fixed-sized blocks which may or may not be compressed or encrypted, and host block size no longer affects data density on tape. Modern tape drives offer a speed matching feature, where the drive can dynamically decrease the ...
A virtual tape library (VTL) is a data storage virtualization technology used typically for backup and recovery purposes. A VTL presents a storage component (usually hard disk storage) as tape libraries or tape drives for use with existing backup software.
It is very common for the tape cartridge to be identified by an external label or sticker, which is normally both in human readable characters such as AB1023 and also in bar code, to be read by devices in an automated library. At the end of the tape, the drive reversed the direction of tape motion, moved the read and write heads slightly ...
Qualstar announced the TLS-4000 Series tape library family in 1994 and began shipment in 1995. Initially using Exabyte 8mm tape drives, the TLS-4000 Series was the first library product line to automate Sony's popular AIT drives.