redwood

redwood: see sequoia; brazilwood.

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redwood

 or sequoia

Coniferous evergreen timber tree (Sequoia sempervirens) of the family Taxodiaceae, found in the fog belt of west-coastal North America. It grows in the coastal range from southwestern Oregon to central California at elevations up to 3,300 ft (1,000 m). The genus name commemorates the Cherokee Indian Sequoyah. The redwood is sometimes called coast redwood to distinguish it from the Sierra redwood (or big tree) and the Japanese redwood (or Japanese cedar). Redwoods are the tallest living trees, often exceeding 300 ft (90 m) in height; one has reached 368 ft (112 m). Typical trunk diameters are 10–20 ft (3–6 m) or more. The redwood tree takes 400–500 years to reach maturity; some are known to be more than 1,500 years old. As the tree ages, the lower limbs fall away, leaving a columnar trunk. Redwood timber has been used for furniture, shingles, fence posts, paneling, and fine wood objects. Today many of the remaining redwood stands are protected (see Redwood National Park; Sequoia National Park). See also dawn redwood.

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A legacy magnetic tape technology from StorageTek that used half-inch, single-hub cartridges similar to IBM's 3480/3490 formats, but employed helical scan recording rather than linear (parallel tracks along the length of the tape). The Redwood SD-3 drive supported 10, 25 and 50GB cartridges (native). StorageTek's Powderhorn library held a mix of SD-3 and 3480/3490 cartridges. See magnetic tape and helical scan.

Redwood Cartridge

Redwood cartridges are the same overall size as IBM's 3480/3490 formats, but the door mechanism and internal recording formats are different. Redwood uses helical scan, while IBM uses linear recording.