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Facebook Bryce Canyon Storage System Specification

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Facebook Bryce Canyon Storage System Specification Bryce Canyon Storage System Specification Authors: Austin Cousineau, Hardware Engineer, Facebook Madhavan Ravi, Hardware Engineer, Facebook CK Kho, Mechanical Engineer, Facebook Jacob Na, Thermal Engineer, Facebook Saket Karajgikar, Thermal Engineer, Facebook Song Liu, Software Engineer, Facebook Jubin Mehta, Software Engineer, Facebook Bryce Canyon System Specification 1.0 1 License (OCP CLA Option) Contributions to this Specification are made under the terms and conditions set forth in Open Compute Project Contribution License Agreement (“OCP CLA”) (“Contribution License”) by: Facebook, Inc. You can review the signed copies of the applicable Contributor License(s) for this Specification on the OCP website at http://www.opencompute.org/products/specsanddesign Usage of this Specification is governed by the terms and conditions set forth in Open Compute Project Hardware License – Permissive (“OCPHL Permissive”) (“Specification License”). You can review the applicable Specification License(s) executed by the above referenced contributors to this Specification on the OCP website at http://www.opencompute.org/participate/legal-documents/ Note: The following clarifications, which distinguish technology licensed in the Contribution License and/or Specification License from those technologies merely referenced (but not licensed), were accepted by the Incubation Committee of the OCP: None. NOTWITHSTANDING THE FOREGOING LICENSES, THIS SPECIFICATION IS PROVIDED BY OCP "AS IS" AND OCP EXPRESSLY DISCLAIMS ANY WARRANTIES (EXPRESS, IMPLIED, OR OTHERWISE), INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, OR TITLE, RELATED TO THE SPECIFICATION. NOTICE IS HEREBY GIVEN, THAT OTHER RIGHTS NOT GRANTED AS SET FORTH ABOVE, INCLUDING WITHOUT LIMITATION, RIGHTS OF THIRD PARTIES WHO DID NOT EXECUTE THE ABOVE LICENSES, MAY BE IMPLICATED BY THE IMPLEMENTATION OF OR COMPLIANCE WITH THIS SPECIFICATION. OCP IS NOT RESPONSIBLE FOR IDENTIFYING RIGHTS FOR WHICH A LICENSE MAY BE REQUIRED IN ORDER TO IMPLEMENT THIS SPECIFICATION. THE ENTIRE RISK AS TO IMPLEMENTING OR OTHERWISE USING THE SPECIFICATION IS ASSUMED BY YOU. IN NO EVENT WILL OCP BE LIABLE TO YOU FOR ANY MONETARY DAMAGES WITH RESPECT TO ANY CLAIMS RELATED TO, OR ARISING OUT OF YOUR USE OF THIS SPECIFICATION, INCLUDING BUT NOT LIMITED TO ANY LIABILITY FOR LOST PROFITS OR ANY CONSEQUENTIAL, INCIDENTAL, INDIRECT, SPECIAL OR PUNITIVE DAMAGES OF ANY CHARACTER FROM ANY CAUSES OF ACTION OF ANY KIND WITH RESPECT TO THIS SPECIFICATION, WHETHER BASED ON BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE), OR OTHERWISE, AND EVEN IF OCP HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 1/9/2018 ii Bryce Canyon System Specification 1.0 Contents 1 License (OCP CLA Option) .................................................................................................. ii 2 Introduction ..................................................................................................................... 1 3 System Architecture ......................................................................................................... 2 3.1 System design and flexibility ................................................................................................................................................ 2 3.2 System components ................................................................................................................................................................ 3 3.2.1 Drive Plane Boards ......................................................................................................................................................................... 3 3.2.2 I/O Module .......................................................................................................................................................................................... 3 3.2.3 Storage Controller Card .............................................................................................................................................................. 4 3.3 System configurations ............................................................................................................................................................ 4 3.3.1 Dual Storage Server....................................................................................................................................................................... 6 3.3.2 Single Storage Server ................................................................................................................................................................... 7 3.3.3 JBOD ..................................................................................................................................................................................................... 7 3.4 Systems management overview ......................................................................................................................................... 8 3.4.1 Dual Storage Server....................................................................................................................................................................... 8 3.4.2 Single Storage Server ................................................................................................................................................................... 9 3.4.3 JBOD ..................................................................................................................................................................................................... 9 4 System Interaction and Serviceability ............................................................................. 10 4.1 Labeling of logical domains ................................................................................................................................................ 10 4.2 LEDs and buttons .................................................................................................................................................................... 11 4.2.1 Front Panel Buttons and LEDs ............................................................................................................................................... 11 4.2.1.1 Power Button .................................................................................................................................................................................................... 12 4.2.1.2 Power LED .......................................................................................................................................................................................................... 12 4.2.1.3 Reset Button ...................................................................................................................................................................................................... 12 4.2.1.4 Fault LED ............................................................................................................................................................................................................. 12 4.2.1.5 USB Debug Port ............................................................................................................................................................................................... 12 4.2.2 I/O Module Buttons and LEDs ................................................................................................................................................ 13 4.2.2.1 Graceful Power Down Button ................................................................................................................................................................... 13 4.2.2.2 System Reset Button...................................................................................................................................................................................... 13 4.2.2.3 USB Debug Port ............................................................................................................................................................................................... 13 4.2.2.4 Status/Fault LED ............................................................................................................................................................................................... 13 4.2.2.5 MiniSAS HD LEDs ............................................................................................................................................................................................ 14 4.2.3 Drive LED behaviors .................................................................................................................................................................... 14 4.2.4 Fan Module LEDs .......................................................................................................................................................................... 15 4.3 Hard Drive Serial Number Window ................................................................................................................................ 15 4.4 Service operations .................................................................................................................................................................. 15 4.4.1 Drive replacement .......................................................................................................................................................................
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