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Fibre Channel Interface
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Fibre Channel Interface
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©1997–2004, Seagate Technology LLC All rights reserved Publication number: 77767496, Rev. D February 2004 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trade- marks or trademarks of Seagate Technology LLC. Other product names are registered trade- marks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No pa
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Revision status summary sheet Sheets Affected Revision Date Sheets Affected A 03/21/1997 L. Newman/J. Coomes and W. Whittington All B 08/01/2000 L. Newman/J. Coomes All C 01/03/2003 L. Newman No change except for new Seagate logo. Document migration/conversion only. D 02/05/2004 K. Schweiss/J. Coomes and W. Paulsen All
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Contents 1.0 Publication overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 How to use this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 General interface description. . . . . . . . . . . . . . . . . .
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6.3 Exchanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.4 Credit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.0 Classes of service (FC-2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7.1 Class 1 . . . . . . . . . . . . . . . . . . . . . . . . .
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10.4.2 ESI write transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 10.5 Enclosure-initiated ESI transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 10.5.1 EIE Discovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 10.5.2 EIE operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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12.10.1 Error Counter pages, Write, Read, Read Reverse, and Verify (code 02, 03, 04, and 05h) 196 12.10.2 Non-Medium Error page (code 06h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197 12.10.3 Temperature page (code 0Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 12.10.4 Device Self-Test Results Log page (code 10h) . . . . . . . . . . . . . . . . . . . . . . . . . . 201 12.10.5 Cache Statistics page (code 37h). . . . . . . . . .
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12.40 Reserve (10) command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299 12.40.1 Logical unit reservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 12.40.2 Third-party reservation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 12.40.3 Superseding reservations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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13.2.3.2 Background mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356 13.2.3.3 Elements common to foreground and background self-test modes . . 357 14.0 Seagate Technology support services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363 x Fibre Channel
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List of Figures Figure 1. Fibre Channel standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Arbitrated loop topology (dual port private loop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 3. Port bypass circuit physical interconnect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 4. Decimal value translation . . . . . . . . . . . . . . . . . . . . .
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xii Fibre Channel Interface Manual, Rev. D
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1.0 Publication overview This publication provides some general information about Fibre Channel as well as detailed information about how Seagate disc drives implement Fibre Channel Arbitrated Loop technology. This publication will continue to be revised as Fibre Channel technology advances and as Seagate Fibre Channel drives change to meet data storage needs. You will observe that many references are made to SCSI throughout this publication. This is because Fibre Channel transports the SCSI
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1.3 General interface description This manual describes the Seagate Technology LLC Fibre Channel/SCSI (Small Computer Systems Interface) as implemented on Seagate Fibre Channel (FC) disc drives. The disc drives covered by this manual are classified as intelligent peripherals. The interface supports multiple initiators, self-configuring host software, automatic features that relieve the host from the necessity of knowing the physical architecture of the target (logical block addressing is used)
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2.0 Introduction to Fibre Channel Fibre Channel is an American National Standards Institute (ANSI) interface that acts as a general transport vehicle to simultaneously deliver the command sets of several existing interface protocols including SCSI-3, IPI-3, HIPPI-FP, IP, and ATM/AAL5. Proprietary and other command sets may also use and share the Fibre Channel, but these are not yet defined as part of the Fibre Channel standard. Fibre Channel Arbitrated Loop (FC-AL) is one topology used to con
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Networks Networks allow many devices to communicate with each other at will. This is usually accompanied by software support to route transactions to the correct provider and to verify access permission. Networks are used for transferring data with “error-free delivery” and voice and video where “delivery on time” is the primary require- ment with error-free delivery being a secondary consideration. For example, when transferring video, it is more important to provide on-time delivery of data
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3.0 Fibre Channel standards Figure 1 shows the various documents involved in the ANSI set of standards relating to Fibre Channel. This model is not static—it is growing as others areas of interest are developed. SCSI-GPP FC-SB FC-FP FC-LE SCSI-FCP FC-I3 FC-I3 Generic Mapping of Single-Byte Mapping of Link SCSI-FC Revision to Revision to Packetized Command Code Sets HIPPI-FP Encapsulation Protocol IPI-3 Disk std IPI-3 Tape std Protocol FC-ATM Mapping of FC-AL-n ATM Arbitrated Loop FC-PH-n Fibre
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Copies of ANSI documents relating to Fibre Channel can be purchased from: Global Engineering 15 Inverness Way East Englewood, CO 80112-5704 (800) 854-7179 or (303) 792-2181 Fax: (303) 792-2192 3.1 General information The FC-PH standard is the foundation upon which all others are based. Each topology, command set, and pro- tocol has its own standard. These are all separate to allow future growth and to allow designers to more easily use only those parts that affect their products. It is imp
