ISO/IEC INTERNATIONAL STANDARD 14776-150 First edition 2004-11 Information technology Small computer system interface (Scsl)- Part 150: Serial Attached SCSI (SAS) IEC ISO Reference number ISO/IEC 14776-150:2004(E) SHI Ag p Not for Resale adzi rneworking emitedwithoutliensfrmH Not for Resale ISO/IEC INTERNATIONAL STANDARD 14776-150 First edition 2004-11 Information technology Small computer system interface (Scsl) - Part 150: Serial Attached SCSI (SAS) @ IS0/IEC 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any ISO/IEC Copyright Office · Case postale 56· CH-1211 Geneve 20 · Switzerland EC PRICE CODE XK ISO For price, see current catalogue Copyright International Organization for Standardization Not for Resale adzi rneworking emitedwithoutliensfrmH Not for Resale 3 14776-150 @ ISO/IEC:2004(E) CONTENTS Foreword 25 Introduction 26 1 Scope.. 29 2References. .29 2.1 Normative references 29 2.2 References under development ... .29 2.3 Bibliography... .29 3 Definitions, symbols, abbreviations, keywords, and conventions .. .30 3.1 Definitions.... 3.2 Symbols and abbreviations ..3 Keywords........ 41 3.4 Editorial conventions .. 3.5 Object and class diagram conventions... 43 3.6 State machine conventions ........ .46 3.6.1 State machine conventions overview... .46 3.6.2 Transitions ... .46 3.6.3 Messages, requests, indications, confirmations, responses, and event notifications. 47 3.7 Bit and byte ordering .... 3.8 Notation for procedures and functions... .48 .49 4.1 Architecture ... 49 4.1.1 Architecture overview.... 49 4.1.2 Physical links and phys.. .50 4.1.3 Ports (narrow ports and wide ports)... .52 4.1.4 SAS devices.. .54 4.1.5 Expander devices (edge expander devices and fanout expander devices). 4.1.7 Domains... 57 4.1.8 Expander device topologies..... .59 4.1.8.1 Expander device topology overview. .59 4.1.8.2 Edge expander device set.. 59 4.1.8.3 Expander device topologies.. 4.1.9 Pathways ... 63 4.1.10 Connections. 64 4.2 Names and identifiers... .66 4.2.1 Names and identifiers overview ... .66 4.2.2 SAS addresses .. .67 4.2.3 Hashed SAS address.. 68 4.4 Device names... 4.2.5 Port names. .68 4.2.6 Port identifiers ... .68 4.2.7 Phy identifiers ... .69 4.3 State machines... .69 4.3.1 State machine overview... .69 4.3.2 Transmit data path. 71 4.3.3 State machines and SAS device, SAS port, and SAS phy objects.... 4.4Resets.. 4.4.1 Reset overview. 77 4.4.2 Hard reset ... 79 4.5 I_T nexus loss ... 79 4.6Expanderdevicemodel... 4.6.1 Expander device model overview ... 79 4..2 Expander ports......... Copyright International Organization for Standardization Not for Resale 3 14776-150 @ ISO/IEC:2004(E) CONTENTS Foreword 25 Introduction 26 1 Scope.. 29 2References. .29 2.1 Normative references 29 2.2 References under development ... .29 2.3 Bibliography... .29 3 Definitions, symbols, abbreviations, keywords, and conventions .. .30 3.1 Definitions.... 3.2 Symbols and abbreviations ..3 Keywords........ 41 3.4 Editorial conventions .. 3.5 Object and class diagram conventions... 43 3.6 State machine conventions ........ .46 3.6.1 State machine conventions overview... .46 3.6.2 Transitions ... .46 3.6.3 Messages, requests, indications, confirmations, responses, and event notifications. 47 3.7 Bit and byte ordering .... 3.8 Notation for procedures and functions... .48 .49 4.1 Architecture ... 49 4.1.1 Architecture overview.... 49 4.1.2 Physical links and phys.. .50 4.1.3 Ports (narrow ports and wide ports)... .52 4.1.4 SAS devices.. .54 4.1.5 Expander devices (edge expander devices and fanout expander devices). 4.1.7 Domains... 57 4.1.8 Expander device topologies..... .59 4.1.8.1 Expander device topology overview. .59 4.1.8.2 Edge expander device set.. 59 4.1.8.3 Expander device topologies.. 4.1.9 Pathways ... 63 4.1.10 Connections. 64 4.2 Names and identifiers... .66 4.2.1 Names and identifiers overview ... .66 4.2.2 SAS addresses .. .67 4.2.3 Hashed SAS addr