Micropolis
Micropolis was an American computer-storage manufacturer known for high-density floppy-disk systems and later SCSI and ESDI hard drives.
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Overview
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.
History
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]Assets connected with Hammer Storage Solutions are sold to Bell Microproducts as successor activities are consolidated.
- 1998
Micropolis branding is no longer marketed
[1]Singapore Technology ceases marketing the Micropolis disk-drive brand.
- 1997
StreamLogic enters bankruptcy
[1]The reorganized successor StreamLogic files for bankruptcy amid securities-fraud allegations.
- 1996
Hard-disk business is sold
[1]Micropolis sells its hard-disk business to Singapore Technology.
- 1991
3.5-inch hard-disk manufacturing begins
[1]Micropolis adds 3.5-inch hard-disk production to its existing larger-format drive activities.
- 1986
Manufacturing expands to Singapore
[1]Micropolis begins manufacturing disk drives in Singapore as its hardware business grows.
- 1980
MetaFloppy high-density products emerge
[1]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 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 begins operations in Chatsworth, California as a computer-storage equipment manufacturer.
Products and positioning
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.
Controversies
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.
Brand decisions
1996
Sell the hard-disk business to Singapore TechnologyM&ABackground
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.
1996
Reorganize remaining activities as StreamLogicStrategyBackground
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.
1991
Add 3.5-inch hard-disk productionGeneration changeBackground
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.
1986
Expand manufacturing into SingaporeStrategyBackground
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.
1980
Increase 5.25-inch floppy capacity through density improvementsProduct launchBackground
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.
Recent events
- 2000
Bell Microproducts acquires Hammer Storage Solutions assets[1]
M&A
Assets of Hammer Storage Solutions, a later successor connected to the post-Micropolis storage businesses, were sold to Bell Microproducts.
- 1998
Micropolis disk brand is discontinued by Singapore Technology[1]
Other
Singapore Technology ceased marketing the Micropolis name after acquiring the company’s disk business.
- 1998
Singapore Technology ceases marketing the Micropolis brand[1]
Other
Singapore Technology stopped marketing the Micropolis name, ending the brand’s active presence in the disk-drive market.
- 1996
Micropolis sells its hard-disk business to Singapore Technology[1]
M&A
Micropolis transferred its hard-disk business to Singapore Technology, ending the company’s independent role as a disk-drive manufacturer.
- 1996
Micropolis sells its hard-drive business to Singapore Technology[1]
M&A
Micropolis sold its hard-disk business to Singapore Technology, a subsidiary of Temasek Holdings. Singapore Technology later discontinued marketing the Micropolis brand.
- 1991
Micropolis begins 3.5-inch hard-disk production[1]
Product launch · Product generation
The company entered 3.5-inch hard-disk manufacturing, following the storage industry’s movement toward smaller drive formats.
- 1986
Micropolis begins manufacturing disk drives in Singapore[1]
Other
Micropolis began manufacturing drives in Singapore as part of its international production and supply-chain expansion.
- 1978
Micropolis extends 5.25-inch floppy capacity with high-density subsystems[2]
Product launch
Contemporary industry coverage described Micropolis double-sided 5.25-inch floppy products, intelligent controllers, Group Coded Recording, and multi-drive configurations offering substantially greater capacity than standard systems.
- 1978
Micropolis expands capacity of 5.25-inch floppy subsystems[1]
Product launch · Product generation
A Computerworld report described Micropolis OEM floppy products offering substantially greater capacity through double-sided drives, Group Coded Recording, and microprocessor-based controllers. The reported systems could be combined into larger host-connected storage configurations.
Sources2 sources
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