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Product Manual
Savvio SAS
ST973401SS
ST936701SS
100350598
Rev. D
August 2007
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Copyright © 2007 Seagate Technology LLC. All rights reserved. Printed in U.S.A. Publication number: 100350598, Rev. D, August 2007 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Savvio, SeaTools and SeaTDD are either trademarks or regis- tered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered tradem
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Contents 1.0 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Applicable standards and reference documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.1 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . .
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6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6.4.5 Air c
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List of Figures Figure 1. Typical ST973401SS drive +12V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 2. Typical ST973401SS drive +5V current profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 3. Typical ST936701SS drive +12V current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Figure 4. Typical ST936701SS drive +5V current profile. . . . . . . . . . . . . . . . . . . . . . .
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1.0 Scope ® ® This manual describes Seagate Technology LLC, Savvio SAS (Serial Attached SCSI) disc drives. Savvio drives support the SAS Protocol specifications to the extent described in this manual. The SAS Inter- face Manual (part number 100293071) describes the general SAS characteristics of this and other Seagate SAS drives. Figure 1. Savvio family disc drive Savvio SAS Product Manual, Rev. D 1
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2 Savvio SAS Product Manual, Rev. D
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2.0 Applicable standards and reference documentation The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends on its host equipment to provide adequate power and environment for optimum performance and compliance with applicable industry and governmental regulations. Special attention must be given in the areas of safety, power distribution, shielding, audible noise control, and temperature regulation. In particular, the drive
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2.1.2 Electromagnetic compliance Seagate uses an independent laboratory to confirm compliance with the directives/standards for CE Marking and C-Tick Marking. The drive was tested in a representative system for typical applications. The selected sys- tem represents the most popular characteristics for test platforms. The system configurations include: � Typical current use microprocessor � 3.5-inch floppy disc drive � Keyboard � Monitor/display �Printer � External modem �Mouse Although the test
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2.2 Reference documents Savvio SAS Installation Guide Seagate part number: 100350599 SAS Interface Manual Seagate part number: 100293071 ANSI SAS Documents SFF-82232.5” Drive Form Factor with Serial Connector SFF-8460HSS Backplane Design Guidelines SFF-8470Multi Lane Copper Connector SFF-8482SAS Plug Connector ANSI INCITS.xxx Serial Attached SCSI (SAS) Standard (T10/1562-D) ISO/IEC 14776-xxxSCSI Architecure Model-3 (SAM-3) Standard (T10/1561-D) ISO/IEC 14776-xxxSCSI Primary Commands-3
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6 Savvio SAS Product Manual, Rev. D
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3.0 General description Savvio drives combine Tunneling Magnetoresistive (TMR) heads and a Serial Attached SCSI (SAS) interface to provide high performance, high capacity data storage for a variety of systems including engineering worksta- tions, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-generation computing demands for performance, scalability, flexibility and high-density storage requirements. Savvio drives are random access
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3.1 Standard features Savvio drives have the following standard features: � 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface � Integrated dual port SAS controller supporting the SCSI protocol � Support for SAS expanders and fanout adapters � Firmware downloadable using the SAS interface � 64 - deep task set (queue) � Supports up to 32 initiators � Jumperless configuration. � User-selectable logical block size (512 to 528 bytes per logical block) in any multiple of 4 bytes. � Industry standard S
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3.4 Reliability � Mean time between failures (MTBF) of 1,400,000 hours � LSI circuitry � Balanced low mass rotary voice coil actuator � Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) � 5-year warranty 3.5 Formatted capacities Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be a multiple of 4 bytes. Users having the necessary equipment may modify the data block size before issuing a for
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3.8 Factory-installed options You may order the following items which are incorporated at the manufacturing facility during production or packaged before shipping. Some of the options available are (not an exhaustive list of possible options): � Other capacities can be ordered depending on sparing scheme and sector size requested. � Single-unit shipping pack. The drive is normally shipped in bulk packaging to provide maximum protection against transit damage. Units shipped individually require
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4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Sav- vio drives. 4.1 Internal drive characteristics ST973401SS ST936701SS Drive capacity 73.4 36.7 Gbytes (formatted, rounded off value) Read/write data heads 4 2 Bytes per track 360,000 360,000 Bytes (average, rounded off values) Bytes per surface 18,387 18,387 Mbytes (unformatted, rounded off value) Tracks per surface (total) 51,052 51,052 Tracks (user acce
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4.2.2 Format command execution time for 512-byte sectors (minutes) ST973401SS ST936701SS 52 26 Maximum (with verify) 26 13 Maximum (without verify) 4.2.3 General performance characteristics Minimum sector interleave 1 to 1 Data buffer to/from disc media (one 512-byte logical block)* Minimum 63 MBytes/sec Maximum 94 MBytes/sec SAS Interface maximum instantaneous transfer rate 300 Mbytes/sec* per port (dual port = 600 Mbytes/sec*) Logical block sizes Default is 512-byte data blocks Variable 51
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4.3 Start/stop time The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has been applied. If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a
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2. When a requested logical block is reached that is not in any cache segment, the drive fetches it and any remaining requested logical block addresses from the disc and puts them in a segment of the cache. The drive transfers the remaining requested logical blocks from the cache to the host in accordance with the Mode Select Disconnect/Reconnect parameters, page 02h. 3. If the prefetch feature is enabled, refer to section 4.5.2 for operation from this point. Case B—A Read command requests d
