Micropolis

Micropolis Corporation was an American computer-equipment manufacturer established in 1976 and based in Chatsworth, California. The company operated during the formative period of the personal-computer, minicomputer, workstation, and OEM-storage industries, initially concentrating on diskette drives and controllers before expanding into hard-disk technology. Its products were sold primarily to computer manufacturers, systems integrators, and specialized users rather than through a consumer-facing retail brand. Micropolis became notable for increasing the capacity of the 5.25-inch floppy disk, a dominant removable-storage format of the late 1970s and early 1980s. Its MetaFloppy and related products used higher track densities and recording-density techniques to provide substantially more storage than conventional 48-tracks-per-inch drives. The company promoted 77-track and later 96-track-per-inch implementations, along with proprietary or enhanced formatting and controller technology. These systems appeared in a variety of OEM and S-100-bus computers, and Micropolis-compatible mechanisms were also produced by other manufacturers. The company’s approach helped demonstrate how improvements in track density, encoding, drive mechanics, and controller design could extend the useful capacity of an established physical disk format. The company’s early products included 5.25-inch floppy subsystems, intelligent controllers, double-sided drives, and configurations using Group Coded Recording. Contemporary product descriptions emphasized the ability to combine multiple drives and subsystems through a shared host interface, allowing customers to build relatively large online storage systems for the period. Micropolis technology was used in systems such as Vector Graphic computers and selected Commodore disk products, although the company primarily remained an equipment supplier and OEM technology provider. Micropolis later entered the hard-disk market, first producing 8-inch drives and subsequently 5.25-inch models. It developed products using interfaces including SCSI and ESDI as storage requirements grew and computer systems moved toward fixed magnetic disks. Manufacturing operations expanded to Singapore in 1986, and the company began producing 3.5-inch hard disks in 1991. These moves reflected the broader industry transition from floppy-based storage toward higher-capacity fixed disks used in personal computers, workstations, servers, and specialized systems. During the 1980s and 1990s, the hard-disk industry became increasingly competitive and capital intensive. Larger manufacturers benefited from scale, falling component costs, aggressive pricing, and rapid technology cycles. Micropolis remained in the market longer than some contemporaries but ultimately sold its hard-disk business to Singapore Technology, a subsidiary associated with Temasek Holdings, in 1996. Singapore Technology stopped marketing the Micropolis brand in 1998. Following the sale of its disk business, Micropolis was reorganized as StreamLogic Corporation. StreamLogic pursued storage-subsystem and video-on-demand activities, including RAIDION storage products and VIDEON technology, but filed for bankruptcy in 1997 amid securities-fraud allegations. The RAIDION line was subsequently associated with Peripheral Technology Group, while VIDEON was sold to Sumitomo Corporation. Later successor activity included Hammer Storage Solutions, formed through the purchase of the hardware division of Macintosh-storage vendor FWB; assets connected with Hammer Storage were sold to Bell Microproducts in 2000. Micropolis therefore survives primarily as a historical computer-storage brand rather than as an active standalone manufacturer.

Micropolis Corporation was founded in 1976 in Chatsworth, California, during the rapid expansion of the computer-peripheral industry. Its initial business centered on diskette drives and controllers, particularly high-capacity 5.25-inch systems for OEMs and specialized computer manufacturers. At the time, the 5.25-inch floppy was becoming an important storage medium, but its capacity was constrained by the track density and recording methods inherited from earlier designs. Micropolis’s principal early contribution was to increase the density of the 5.25-inch format. The company built on the 48-tracks-per-inch standard associated with Shugart Associates and developed products using approximately twice the track density and higher recording density. The resulting MetaFloppy family offered several times the storage of ordinary drives of the same physical size. Micropolis also pioneered a 100-tracks-per-inch approach before later adopting 96-tracks-per-inch designs as that became more closely aligned with industry standards. The 96-tpi format had the practical advantage of allowing compatible systems to read lower-density 48-tpi disks by stepping across tracks. The company’s product range included drives, diskette subsystems, intelligent controllers, double-sided configurations, and implementations using Group Coded Recording. Industry material from the late 1970s described Micropolis products with formatted capacities approaching two megabytes for selected double-sided 5.25-inch configurations, as well as arrangements in which multiple drives could be linked to a common host interface. Micropolis-compatible 77-track mechanisms were also produced by Tandon. Drives based on the format were used in systems including Vector Graphic S-100 computers, the Durango F-85, and selected Commodore disk units such as the 8050, 8250, 8250LP, and SFD-1001. Micropolis subsequently diversified into hard-disk drives. It first followed the industry’s movement toward larger 8-inch fixed disks and later produced 5.25-inch hard drives. These products used interfaces such as SCSI and ESDI, serving the growing requirements of workstations, business computers, OEM systems, and other fixed-storage applications. The company expanded manufacturing into Singapore in 1986. In 1991 it began manufacturing 3.5-inch hard disks, a format that was becoming increasingly important in personal computers and compact systems. The hard-disk market became progressively more difficult during the 1980s and 1990s. Manufacturers faced rapid increases in areal density, falling prices, high research and development costs, and strong competition from larger firms. Micropolis remained active through much of this period but ultimately sold its hard-disk business to Singapore Technology in 1996. Singapore Technology later stopped marketing the Micropolis brand in 1998, effectively ending the brand’s presence as a disk-drive supplier. After the disk-business sale, the company was reorganized as StreamLogic Corporation. StreamLogic attempted to develop a broader storage and media-technology business. Its activities included RAIDION storage subsystems and VIDEON video-on-demand technology. StreamLogic filed for bankruptcy in 1997 amid securities-fraud allegations. The RAIDION line was later associated with Peripheral Technology Group, while Sumitomo Corporation acquired the VIDEON technology. A later successor entity, Hammer Storage Solutions, was formed through the purchase of FWB’s hardware division, and its assets were sold to Bell Microproducts in 2000. These transactions dispersed the company’s remaining technology and operations. Micropolis is now chiefly remembered for its high-density floppy-drive work and its later participation in the competitive hard-disk market.

• 2000

  Hammer Storage assets are sold to Bell Microproducts

  [1]Micropolis Corporationen.wikipedia.org

  Assets connected with Hammer Storage Solutions are sold to Bell Microproducts as successor activities are consolidated.

• 1998

  Micropolis branding is no longer marketed

  [1]Micropolis Corporationen.wikipedia.org

  Singapore Technology ceases marketing the Micropolis disk-drive brand.

• 1997

  StreamLogic enters bankruptcy

  [1]Micropolis Corporationen.wikipedia.org

  The reorganized successor StreamLogic files for bankruptcy amid securities-fraud allegations.

• 1996

  Hard-disk business is sold

  [1]Micropolis Corporationen.wikipedia.org

  Micropolis sells its hard-disk business to Singapore Technology.

• 1991

  3.5-inch hard-disk manufacturing begins

  [1]Micropolis Corporationen.wikipedia.org

  Micropolis adds 3.5-inch hard-disk production to its existing larger-format drive activities.

• 1986

  Manufacturing expands to Singapore

  [1]Micropolis Corporationen.wikipedia.org

  Micropolis begins manufacturing disk drives in Singapore as its hardware business grows.

• 1980

  MetaFloppy high-density products emerge

  [1]Micropolis Corporationen.wikipedia.org

  The MetaFloppy family applies increased track and recording density to raise the capacity of 5.25-inch floppy disks.

• 1978

  High-capacity 5.25-inch floppy systems are promoted

  [2]Micropolis/Vector Graphic S-100 FDCs100computers.com

  Micropolis presents double-sided 5.25-inch floppy products, intelligent controllers, and Group Coded Recording configurations for OEM computer systems.

• 1976

  Micropolis Corporation is founded

  [1]Micropolis Corporationen.wikipedia.org

  Micropolis begins operations in Chatsworth, California as a computer-storage equipment manufacturer.

Micropolis positioned itself as a technology-oriented OEM storage supplier, emphasizing higher capacity, specialized recording formats, intelligent controllers, and compatibility with computer-system integrators. Its historical differentiation came from extending the capacity of established floppy formats and later supplying fixed-disk products for professional and OEM computing markets.

• 5.25-inch floppy-disk drives · 1980

  MetaFloppy series

  Micropolis’s MetaFloppy family used increased track density and recording density to deliver substantially more storage than conventional 5.25-inch floppy drives. Models in the family included the 1043, 1053, and 1054. The technology was part of the company’s effort to extend the useful life and capacity of a widely adopted removable-media format.

• Floppy-disk subsystems and controllers · 1978

  Megafloppy and OEM floppy subsystems

  Micropolis supplied integrated 5.25-inch floppy subsystems for computer manufacturers and system builders. The products included double-sided drives, intelligent controllers, Group Coded Recording, and configurations that could combine several mechanisms through a common host interface. Contemporary descriptions emphasized higher formatted capacity and flexible OEM integration.

• Hard-disk drives

  Micropolis 8-inch hard drives

  Micropolis entered the fixed-disk market with 8-inch hard drives, serving the larger computer systems and professional storage applications of the period. These products represented the company’s transition from removable floppy storage toward higher-capacity fixed media.

• Hard-disk drives

  Micropolis 5.25-inch hard drives

  The company later produced 5.25-inch hard drives as fixed-disk storage moved into smaller computer and workstation systems. Micropolis drives used interfaces including SCSI and ESDI and were supplied into OEM and professional computing markets.

• Hard-disk drives · 1991

  Micropolis 3.5-inch hard drives

  Micropolis began manufacturing 3.5-inch hard disks in 1991. The format supported the industry’s move toward more compact personal computers, workstations, and storage systems, although the business was later sold as competition intensified.

• 1997

  StreamLogic bankruptcy and securities-fraud allegations

  After Micropolis was reorganized as StreamLogic Corporation, the successor filed for bankruptcy in 1997 amid allegations of securities fraud. The bankruptcy contributed to the breakup and subsequent sale of remaining technology and business assets.

  Source

Read more

• 1996

  Sell the hard-disk business to Singapore TechnologyM&A

  Background

  The hard-disk sector was under pressure from rapid technology changes, falling prices, and competition from larger manufacturers.

  Action taken

  Micropolis sold its hard-disk business to Singapore Technology, a company associated with Temasek Holdings.

  Aftermath

  Singapore Technology later stopped marketing the Micropolis brand, while the remaining corporate activities were reorganized under StreamLogic.

  Source

• 1996

  Reorganize remaining activities as StreamLogicStrategy

  Background

  Following the sale of the disk business, Micropolis needed a new structure and business focus for its remaining storage-subsystem and media-technology activities.

  Action taken

  The company was reorganized as StreamLogic Corporation, with activities including RAIDION storage systems and VIDEON video-on-demand technology.

  Aftermath

  StreamLogic filed for bankruptcy in 1997, and its remaining technologies and assets were subsequently divided among other companies.

  Source

• 1991

  Add 3.5-inch hard-disk productionGeneration change

  Background

  Computer systems were moving toward smaller form factors and greater fixed-storage capacity, increasing the importance of 3.5-inch drives.

  Action taken

  Micropolis began manufacturing 3.5-inch hard disks alongside its larger-format products.

  Aftermath

  The move broadened the company’s product portfolio but did not prevent the later sale of its disk business in a highly competitive market.

  Source

• 1986

  Expand manufacturing into SingaporeStrategy

  Background

  Disk-drive production was becoming an international, scale-sensitive business, with Asian manufacturing locations increasingly important to the industry.

  Action taken

  Micropolis began manufacturing drives in Singapore.

  Aftermath

  The expansion supported Micropolis’s hard-disk activities before the business was ultimately sold to Singapore Technology.

  Source

• 1980

  Increase 5.25-inch floppy capacity through density improvementsProduct launch

  Background

  Standard 5.25-inch floppy disks offered limited capacity, while computer users and OEMs increasingly needed more storage without changing the physical drive format.

  Action taken

  Micropolis developed MetaFloppy products using higher track density and recording-density techniques, including high-density 77-track and later 96-track-per-inch implementations.

  Aftermath

  The approach gave Micropolis a distinctive position in high-capacity floppy storage and was adopted in several OEM and specialized computer systems.

  Source

1. 1Micropolis Corporationen.wikipedia.org
2. 2Micropolis/Vector Graphic S-100 FDCs100computers.com