Attached files

file filename
EX-23.1 - EX-23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - Seagate Technology Holdings plca2225686zex-23_1.htm
EX-31.2 - EX-31.2 CFO CERTIFICATION PURSUANT TO SECTION 302 - Seagate Technology Holdings plca2225686zex-31_2.htm
EX-31.1 - EX-31.1 CEO CERTIFICATION PURSUANT TO SECTION 302 - Seagate Technology Holdings plca2225686zex-31_1.htm
EX-32.1 - EX-32.1 CERTIFICATION PURSUANT TO SECTION 906 - Seagate Technology Holdings plca2225686zex-32_1.htm
EX-10.32 - EX-10.32 FIRST AMENDMENT DATED AUGUST 31, 2011 TO THE CREDIT AGREEMENT DATED AS OF JANUARY 18, 2011 - Seagate Technology Holdings plca2225686zex-10_32.htm
XML - IDEA: XBRL DOCUMENT - Seagate Technology Holdings plcR9999.htm
10-K - FORM 10-K - Seagate Technology Holdings plca2225686z10-k.htm

QuickLinks -- Click here to rapidly navigate through this document


Exhibit 21.1

Seagate Technology Public Limited Company Subsidiaries as of July 3, 2015

Seagate Technology Public Limited Company   Ireland

Seagate Technology

  Cayman

Seagate Technology (Dublin Branch)

  Ireland

Seagate Technology HDD Holdings

  Cayman

Seagate Technology HDD Holdings (Dublin Branch)

  Ireland

Seagate HDD Cayman

  Cayman

Seagate Technology (US) Holdings, Inc.

  Delaware

EVault, Inc.

  Delaware

EVault Canada Inc.

  Canada

EVault (EMEA) B.V.

  Netherlands

EVault UK Limited

  United Kingdom

EVault GmbH

  Germany

EVault Solutions Pte. Ltd

  Singapore

Seagate Solutions France S.A.S.

  France

LaCie Peripherals, Inc.

  Canada

LaCie Australia Pty Ltd

  Australia

LaCie, Ltd.

  Oregon

Seagate Technology Canada Inc.

  Canada

Quinta Corporation

  California

Seagate US LLC

  Delaware

Seagate Technology LLC

  Delaware

Seagate Technology AB

  Sweden

Seagate Technology Australia Pty. Limited

  Australia

Seagate Technology GmbH

  Germany

Seagate Technology (Hong Kong) Limited

  Hong Kong

Seagate Technology SAS

  France

Seagate Technology Taiwan Ltd.

  Taiwan

Seagate Systems (US) Holdings Inc.

  Delaware

Seagate Systems (US) Inc

  California

Seagate Federal, Inc.

  Delaware

Seagate Technology International

  Cayman

Seagate Technology International (Singapore Branch)

  Singapore

Seagate Brasil Comércio e Representação de Produtos de Informática Ltda.

  Brazil

Seagate Brasil Comércio e Representação de Produtos de Informática Ltda.(Sao Paulo Branch)

  Brazil

Maxtor Global Ltd.

  Bermuda

Maxtor Luxembourg S.àr.l.

  Luxembourg

Maxtor Peripherals (S) Pte Ltd

  Singapore

Maxtor International S.àr.l.

  Switzerland

Maxtor International Manufacturing S.àr.l

  Switzerland

Penang Seagate Industries (M) Sdn. Bhd.

  Malaysia

Seagate Business Centre (UK) Ltd.

  United Kingdom

Seagate Business Centre (US) LLC

  Delaware

Seagate Business Centre (Singapore) Pte. Ltd.

  Singapore

Seagate Business Centre GmbH

  Germany

Seagate Korea Ltd.

  Korea

Seagate Korea Ltd. (Seoul Branch)

  Korea

Seagate International (Johor) Sdn. Bhd.

  Malaysia

Seagate Memory Products International

  Cayman

Seagate Technology International (Wuxi) Co. Ltd.

  China

Seagate Technology Services (Shanghai) Co. Ltd.

  China

Seagate Technology Services (Shanghai) Co. Ltd. (Beijing Branch)

  China

Seagate Technology Services (Shanghai) Co. Ltd. (Shenzhen Branch)

  China

Seagate Technology Services (Shanghai) Co. Ltd. (Dongguan Branch)

  China

Seagate Technology Services (Shanghai) Co. Ltd. (Chengdu Branch)

  China

Seagate Technology Services (Shanghai) Co. Ltd. (Pudong Branch)

  China

Seagate Technology (Netherlands) B.V.

  Netherlands

Nippon Seagate Inc.

  Japan

Seagate Technology Republic Ireland Limited

  Ireland

Seagate Technology Asia Holdings

  Cayman

Seagate Technology China Holding Company

  Cayman

Seagate Technology Manufacturing (Hong Kong) Limited

  Hong Kong

Seagate Technology (Suzhou) Co., Ltd.

  China

Seagate Technology HDD (India) Private Limited

  India

Seagate Technology HDD (India) Private Limited (Pune Branch)

  India

Seagate Technology HDD (India) Private Limited (Bangalore Branch)

  India

Seagate Technology (Ireland)

  Cayman

Seagate Technology (Ireland) (Springtown Branch)

  United Kingdom

Seagate Technology (Malaysia) Holdings Company

  Cayman

Senai Seagate Industries (M) Sdn. Bhd.

  Malaysia

Seagate Technology UK Ltd.

  United Kingdom

Seagate Technology UK Ltd. (Dublin Branch)

  Ireland

Seagate Technology UK Ltd. (Moscow Branch)

  Russia

Seagate Technology Media (Ireland)

  Cayman

Seagate Technology (Thailand) Limited

  Thailand

Seagate Systems (Bermuda) Limited

  Bermuda

Seagate Systems (Malaysia) Sdn. Bhd.

  Malaysia

Seagate Systems (Singapore) Pte. Limited

  Singapore

Seagate Systems (UK) Limited

  United Kingdom

Seagate Systems (UK) Limited (Singapore Branch)

  Singapore

Seagate Systems (UK) Limited (Thailand Branch)

  Thailand

Seagate Systems (Canada) Limited

  Canada

Xyratex Technology (Wuxi) Co. Ltd.

  China

Xyratex Technology (Wuxi) Co. Ltd. (Shanghai Branch)

  China

Xyratex Technology (Wuxi) Co. Ltd. (Suzhou Branch)

  China

Seagate Systems (Philippines), Inc.

  Philippines

Seagate Systems (Havant) Limited

  United Kingdom

Seagate Systems (Japan) Limited

  Japan

Seagate Systems (México) S.A. de C.V.

  Mexico

Lyve Minds, Inc.

  Delaware

Lyve Minds, LLC

  Cayman

Seagate Singapore International Headquarters Pte. Ltd.

  Singapore

Seagate Singapore International Headquarters Pte. Ltd. (Netherlands Branch)

  Netherlands

LaCie Group

  France

LaCie AB

  Sweden

LaCie AG

  Switzerland

LaCie Asia Limited

  Hong Kong

LaCie China Pte. Ltd.

  Singapore

LaCie Electronique D2, S.A.

  Spain

LaCie GmbH

  Germany

LaCie SAS

  France

LaCie SPRL

  Belgium

LaCie SRL

  Italy

LaCie Ltd

  United Kingdom



QuickLinks

Seagate Technology Public Limited Company Subsidiaries as of July 3, 2015