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A former manufacturer of computer storage interfaces and RAID controllers.

Last updated November 4, 2026

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Overview

Adaptec was an American computer storage hardware company focused on storage connectivity and data-protection equipment. Its products included SCSI adapters, storage adapters, and RAID controllers used to connect storage devices and manage disk arrays in servers, workstations, and other computer systems. Founded in 1981, the company was later acquired by PMC-Sierra. PMC-Sierra was subsequently acquired by Microsemi, after which the Adaptec brand gradually faded from the market. Available material is insufficient to confirm any continuing independent commercial operation, so the brand is classified as defunct.

History

Adaptec was founded in 1981 and focused on computer storage connectivity hardware. As servers and workstations increasingly required external storage connections, SCSI interfaces, and disk-array management, the brand developed a product portfolio centered on SCSI adapters, storage adapters, and RAID controllers. These products connected host systems to storage devices or managed disk arrays for data protection, giving Adaptec recognition in enterprise computing and professional hardware markets. In 2010, Adaptec was acquired by PMC-Sierra, changing the ownership and organizational position of the business. PMC-Sierra was later acquired by Microsemi, after which Adaptec was no longer developed as an independent company and gradually faded from the market. Available information does not establish the founder, headquarters, detailed product models, or exact discontinuation date, so this history is limited to the main confirmed stages.

  • 2010

    Acquired by PMC-Sierra

    Adaptec is acquired by PMC-Sierra, with its brand and related businesses folded into the latter's organization.

  • 1981

    Company founded

    Adaptec is founded, focusing on computer storage connectivity hardware.

Products and positioning

A hardware brand for storage connectivity and RAID data management in computers, servers, and workstations.

  • SCSI adapters

    Adapters used to connect computer systems with SCSI storage devices. They were among Adaptec's representative product categories for servers, workstations, and professional computing environments.

  • RAID controllers

    Controllers that manage RAID arrays built from multiple disks and, depending on the configuration, provide redundancy, performance management, or recovery capabilities.

  • Storage adapters

    Hardware adapters for connecting host systems with storage devices, representing a broader storage-connectivity category associated with Adaptec's interface and RAID controller business.

Recent events

  • Reported

    Microchip announces new Adaptec storage adapters[1]

    Microchip announced Adaptec SmartRAID 3200 RAID Adapters, SmartHBA 2200 adapters and HBA 1200 Host Bus Adapters. The release says the adapters are now production released.

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