Page 2 - © 2010 Seagate Technology LLC. All rights reserved.
© 2010 Seagate Technology LLC. All rights reserved. Publication number: 100496298, Rev. G, November 2010 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Barracuda ES.2 and SeaTools are either trademarks or...
Page 3 - Seagate Technology Support Services iii
Barracuda ES.2 SAS Product Manual, Rev. G (Draft 1) i Seagate Technology Support Services iii 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Standards, compliance and reference documents ...
Page 4 - ii
ii Barracuda ES.2 SAS Product Manual, Rev. G (Draft 1) 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.4....
Page 5 - iii; Seagate Technology Support Services
Barracuda ES.2 SAS Product Manual, Rev. G (Draft 1) iii For information regarding online support and services, visit http://www.seagate.com/www/en-us/about/contact_us/ Available services include: • Presales & Technical support • Global Support Services telephone numbers & business hours • Au...
Page 6 - iv
Page 7 - Scope; This manual describes Seagate Technology
Barracuda ES.2 SAS Product Manual, Rev. G 1 1.0 Scope This manual describes Seagate Technology ® LLC, Barracuda ® ES.2 SAS (Serial Attached SCSI) disk drives. Barracuda ES.2 drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface Manual (part number 1...
Page 9 - Standards, compliance and reference documents; Standards; SAS Interface Manual; Electromagnetic compatibility
Barracuda ES.2 SAS Product Manual, Rev. G 3 2.0 Standards, compliance and reference documents 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 perform...
Page 10 - Compliance; Electromagnetic compliance
4 Barracuda ES.2 SAS Product Manual, Rev. G 2.2 Compliance 2.2.1 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 sele...
Page 11 - Reference documents
Barracuda ES.2 SAS Product Manual, Rev. G 5 2.3 Reference documents SCSI Commands Reference Manual Seagate part number: 100293068 SAS Interface Manual Seagate part number: 100293071 Applicable ANSI SAS documents SFF-8323 3.5” Drive Form Factor with Serial Connector SFF-8460 HSS Backplane Design Guid...
Page 13 - General description
Barracuda ES.2 SAS Product Manual, Rev. G 7 3.0 General description Barracuda ES.2 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 engineer-ing workstations, ne...
Page 14 - Standard features; Barracuda ES.2 SAS drives have the following standard features:; Media description
8 Barracuda ES.2 SAS Product Manual, Rev. G 3.1 Standard features Barracuda ES.2 SAS drives have the following standard features: • Perpendicular recording technology• 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller• Support for SAS expanders and fanout adapte...
Page 15 - Factory-installed options; • The
Barracuda ES.2 SAS Product Manual, Rev. G 9 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 format co...
Page 17 - Performance characteristics; Internal drive characteristics; Access time; Not Including controller overhead
Barracuda ES.2 SAS Product Manual, Rev. G 11 4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Barracuda ES.2 SAS drives. 4.1 Internal drive characteristics ST31000640SS ST3750630SS ST3500620SS Drive capacity 1,0...
Page 18 - General performance characteristics; There is no power control switch on the drive.
12 Barracuda ES.2 SAS Product Manual, Rev. G 4.2.2 Format command execution time (minutes) Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer to the Initiator (excluding connect/disconnect). 4.2.3 General performance ...
Page 19 - Cache operation; Refer to the; Case A; Drive transfers the requested logical blocks to the initiator.; Case B
Barracuda ES.2 SAS Product Manual, Rev. G 13 4.4 Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. Cache refers to the drive buffer storage space when it is used in ca...
Page 20 - Prefetch operation
14 Barracuda ES.2 SAS Product Manual, Rev. G If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made avail-able for future read cache hits. The same buffer space and segmentation is used as set up for read functions. The buffer segmentation scheme is s...
Page 21 - Reliability specifications; Error rates; Recoverable Errors
Barracuda ES.2 SAS Product Manual, Rev. G 15 5.0 Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all inter-face timings, power supply voltages, environmental requirements and drive mounting constraints. 5.1 Error rate...
Page 22 - Seek errors; seeks. Unrecoverable seek errors; Interface errors; Reliability and service; Preventive maintenance; No routine scheduled preventive maintenance is required.; Hot plugging the drive
16 Barracuda ES.2 SAS Product Manual, Rev. G 5.1.3 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a see...
Page 23 - 2 milliseconds
Barracuda ES.2 SAS Product Manual, Rev. G 17 5.2.4 S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow y...
Page 24 - There are two test coverage options implemented in DST:; Parameter Code; Primary Temperature
18 Barracuda ES.2 SAS Product Manual, Rev. G Error rate is the number of errors per operation. The algorithm that S.M.A.R.T. uses to record rates of error is to set thresholds for the number of errors and their interval. If the number of errors exceeds the threshold before the interval expires, the ...
Page 25 - DST failure definition; Recovered errors will not be reported as diagnostic failures.; Implementation; DST has two testing options:
Barracuda ES.2 SAS Product Manual, Rev. G 19 The most thorough option is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the entire media surface, but does so...
Page 26 - Log page entries; The Self-Test Results Value field is set to Fh; Abort
20 Barracuda ES.2 SAS Product Manual, Rev. G Each test consists of three segments: an electrical test segment, a servo test segment, and a read/verify scan segment. Short test (Function Code: 001b) The purpose of the short test is to provide a time-limited test that tests as much of the drive as pos...
Page 29 - Physical/electrical specifications; AC power requirements; DC power requirements; Notes
Barracuda ES.2 SAS Product Manual, Rev. G 23 6.0 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. 6.1 AC power requirements None. 6.2 DC power requirements The voltage and current requirements for a single driv...
Page 31 - General DC power requirement notes.; The +5V and +12V supplies should employ separate ground returns.; Conducted noise immunity; The +12V and +5V current profiles are shown below in figure 2.
Barracuda ES.2 SAS Product Manual, Rev. G 25 [4] This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive. [5] See paragraph 6.2.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transie...
Page 33 - Power dissipation
Barracuda ES.2 SAS Product Manual, Rev. G 27 Figure 4. Typical ST3500620SS drive +5V and +12V current profiles 6.3 Power dissipation Typical power dissipation under idle conditions in 3Gb operation is 8.73 watts (29.79 BTUs per hour). To obtain operating power for typical random read operations, ref...
Page 35 - Environmental limits; Temperature; Location of the HDA temperature check point
Barracuda ES.2 SAS Product Manual, Rev. G 29 6.4 Environmental limits Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C). Maximu...
Page 36 - Relative humidity; The values below assume that no condensation on the drive occurs.; Shock and vibration; b. Operating—abnormal
30 Barracuda ES.2 SAS Product Manual, Rev. G 6.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour. b. Non-operating 5% to 95% non-condensing relative humidity. 6.4.3 E...
Page 38 - Vibration; Acoustics
32 Barracuda ES.2 SAS Product Manual, Rev. G 6.4.4.2 Vibration a. Operating—normal The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibration not exceeding 5 - 22 Hz 0.25 Gs, Limited displacement 22 - 350 Hz 0.5 Gs 350 - ...
Page 39 - 中国限制危险物品的指令; 表示该部件(于同类物品程度上)所含的危险和有毒物质低于中国
Barracuda ES.2 SAS Product Manual, Rev. G 33 exposed to an ambient relative humidity greater than 95%. Materials used in cabinet fabrication, such as vulca-nized rubber, that can outgas corrosive compounds should be minimized or eliminated. The useful life of any electronic equipment may be extended...
Page 40 - Mechanical specifications; Physical dimensions
34 Barracuda ES.2 SAS Product Manual, Rev. G 6.5 Mechanical specifications Refer to Figure 9 for detailed physical dimensions. See Section 8.3, “Drive mounting.” Figure 9. Physical dimensions Height: 1.028 inches 26.11 mm Width: 4.010 inches 101.85 mm Depth: 5.787 inches 146.99 mm Weight: ST31000640...
Page 41 - Defect and error management; Drive internal defects/errors; Drive error recovery procedures
Barracuda ES.2 SAS Product Manual, Rev. G 35 7.0 Defect and error management Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data integrity, perform drive self-maintenance, and validate proper drive operation. SCSI defect and...
Page 42 - These values are subject to change.; Read and write retry count maximum recovery times
36 Barracuda ES.2 SAS Product Manual, Rev. G The drive firmware error recovery algorithms consists of 11 levels for read recoveries and five levels for write. Each level may consist of multiple steps, where a step is defined as a recovery function involving a single re-read or re-write attempt. The ...
Page 43 - SAS system errors; SAS Interface; Background Media Scan
Barracuda ES.2 SAS Product Manual, Rev. G 37 7.3 SAS system errors Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual . The SSP Response returns information to the host about numerous kinds of errors or faults. The Receive Diagnosti...
Page 45 - Installation; Power is supplied through the SAS connector.; Drive orientation
Barracuda ES.2 SAS Product Manual, Rev. G 39 8.0 Installation Barracuda ES.2 disk drive installation is a plug-and-play process. There are no jumpers, switches, or termina-tors on the drive. SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays design...
Page 46 - Cooling; Air flow
40 Barracuda ES.2 SAS Product Manual, Rev. G 8.2 Cooling The host enclosure must dissipate heat from the drive. You should confirm that the host enclosure is designed to ensure that the drive operates within the temperature measurement guidelines described in Section 6.4.1. In some cases, forced air...
Page 49 - Interface requirements; SAS features; task management functions; Table 6 lists the SAS task management functions supported.; task management responses; Task name; Task management response codes; Function name
Barracuda ES.2 SAS Product Manual, Rev. G 43 9.0 Interface requirements This section partially describes the interface requirements as implemented on Barracuda ES.2 drives. Addi-tional information is provided in the SAS Interface Manual (part number 100293071). 9.1 SAS features This section lists th...
Page 50 - Dual port support; Subject to buffer availability, the Barracuda ES.2 drives support:
44 Barracuda ES.2 SAS Product Manual, Rev. G 9.2 Dual port support Barracuda ES.2 SAS drives have two independent ports. These ports may be connected in the same or differ-ent SCSI domains. Each drive port has a unique SAS address. The two ports run at the same link rate. The first port to successfu...
Page 51 - SCSI commands supported; Commands supported by Barracuda ES.2 SAS family drives; Command name
Barracuda ES.2 SAS Product Manual, Rev. G 45 9.3 SCSI commands supported Table 8 lists the SCSI commands supported by Barracuda ES.2 drives. Table 8: Commands supported by Barracuda ES.2 SAS family drives Command name Command code Supported Change Definition 40h N Compare 39h N Copy 18h N Copy and V...
Page 55 - Inquiry data; Barracuda ES.2 SAS inquiry data; PP; Mode Sense data; Default values
Barracuda ES.2 SAS Product Manual, Rev. G 49 9.3.1 Inquiry data Table 9 lists the Inquiry command data that the drive should return to the initiator per the format given in the SAS Interface Manual . Table 9: Barracuda ES.2 SAS inquiry data * Copyright year (changes with actual year). ** SCSI Revisi...
Page 57 - CHG 9c 0a 9d 0f ff ff ff ff ff ff ff ff
Barracuda ES.2 SAS Product Manual, Rev. G 51 9.3.2.1 ST31000640SS Mode Sense data MODE DATA HEADER: 01 2e 00 10 00 00 00 08 BLOCK DESCRIPTOR: 74 70 6d b0 00 00 02 00 MODE PAGES: DEF 81 0a c0 0b ff 00 00 00 05 00 ff ff CHG 81 0a ff ff 00 00 00 00 ff 00 ff ff DEF 82 0e 00 00 00 00 00 00 00 00 01 3a 00...
Page 60 - Miscellaneous operating features and conditions; Miscellaneous features; Miscellaneous status; Supported
54 Barracuda ES.2 SAS Product Manual, Rev. G 9.4 Miscellaneous operating features and conditions Table 10 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An “N” in the support column indicates the feature or condition is not support...
Page 61 - SAS physical interface
Barracuda ES.2 SAS Product Manual, Rev. G 55 9.4.1 SAS physical interface Figure 12 shows the location of the SAS device connector J1. Figures 13 and 14 provide the dimensions of the SAS device. Details of the physical, electrical, and logical characteristics are provided within this section. The op...
Page 62 - SAS connector dimensions; C OF DATUM B
56 Barracuda ES.2 SAS Product Manual, Rev. G Figure 13. SAS connector dimensions C OF DATUM B L 5.08 1.27 (6X) 1.27 (14X) 15.875 0.35MIN 15.875 33.43 0.05 B 4.90 0.08 0.84 0.05 (22X) 0.15 B P15 P1 S7 S1 SEE Detail1 0.30 0.05 (4X) 4.00 0.08 0.15 D 0.30 0.05 (2X) 41.13 0.15 B B C C A A 0.20 B 42.73 RE...
Page 63 - Physical characteristics; This section defines physical interface connector.; Connector requirements; The SAS device connector is illustrated in Figures 13 and 14.
Barracuda ES.2 SAS Product Manual, Rev. G 57 Figure 14. SAS connector dimensions 9.4.2 Physical characteristics This section defines physical interface connector. 9.4.3 Connector requirements Contact your preferred connector manufacturer for mating part information. The SAS device connector is illus...
Page 64 - Electrical description; SAS drives use the device connector for:; Pin descriptions
58 Barracuda ES.2 SAS Product Manual, Rev. G 9.4.4 Electrical description SAS drives use the device connector for: • DC power• SAS interface• Activity LED This connector is designed to either plug directly into a backpanel or accept cables. 9.4.5 Pin descriptions This section provides a pin-out of t...
Page 65 - SAS transmitters and receivers; Power; Signal characteristics; Ready LED Out; Normal command activity
Barracuda ES.2 SAS Product Manual, Rev. G 59 9.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 15. The receiver is AC cou-pling to eliminate ground shift noise. Figure 15. SAS transmitters and receivers 9.4.7 Power The drive recei...
Page 66 - State; VOH; LED o; General interface characteristics; Characteristic
60 Barracuda ES.2 SAS Product Manual, Rev. G The Ready LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +3.3 volt supply through an appropriate current limiting resistor. The LED and the current limiting resis-tor are external to the drive. See Table...
Page 67 - Receive eye mask; Jitter tolerance masks; is half the value for total jitter in table 18 and X1; is half the value for total jitter in table 19, for; Absolute; Abs olute
Barracuda ES.2 SAS Product Manual, Rev. G 61 9.5.2.1.2 Receive eye mask Figure 16 describes the receive eye mask. This eye mask applies to jitter after the application of a single pole high-pass frequency-weighting function that progressively attenuates jitter at 20 dB/decade below a frequency of ((...
Page 68 - additional sinusoidal jitter; Sinus oidal jitte r fr e que ncy
62 Barracuda ES.2 SAS Product Manual, Rev. G The leading and trailing edge slopes of figure 16 shall be preserved. As a result the amplitude value of Z1 is less than that given in table 17 and Z1 TOL and Z1 OP shall be defined from those slopes by the following equa- tion: where: Z1 TOL is the value...
Page 69 - Signal characteristic; idle times of an OOB signal.
Barracuda ES.2 SAS Product Manual, Rev. G 63 9.5.2.2 Transmitter signal characteristics Table 16 specifies the signal requirements at the transmitter end of a TxRx connection as measured into the zero-length test load. All specifications are based on differential measurements. The OOB sequence is pe...
Page 70 - b The value for X1 applies at a total jitter probability of 10; Maximum allowable jitter; d Total jitter is specified at a probability of 10
64 Barracuda ES.2 SAS Product Manual, Rev. G 9.5.2.3 Receiver signal characteristics Table 17 defines the compliance point requirements of the signal at the receiver end of a TxRx connection as measured into the test loads specified in figure 19 and figure 20. 9.5.2.3.1 Jitter Table 18 defines the m...
Page 71 - receivers shall be able to tolerate without exceeding a BER of 10
Barracuda ES.2 SAS Product Manual, Rev. G 65 9.5.2.3.2 Receiver jitter tolerance Table 19 defines the amount of jitter the receiver shall tolerate. 9.5.2.3.3 Compliant jitter test pattern (CJTPAT) The CJTPAT within a compliant protocol frame is used for all jitter testing unless otherwise specified....
Page 72 - transit time of the time domain reflectometer signal.; Requirement; receiver termination time constant
66 Barracuda ES.2 SAS Product Manual, Rev. G 9.5.2.4 Electrical TxRx connections TxRx connections may be divided into TxRx connection segments. In a single TxRx connection individual TxRx connection segments may be formed from differing media and materials, including traces on printed wir-ing boards...
Page 73 - TCTF
Barracuda ES.2 SAS Product Manual, Rev. G 67 A combination of a zero-length test load and the transmitter compliance transfer function (TCTF) test load methodology is used for the specification of transmitter characteristics. This methodology specifies the trans-mitter signal at the test points on t...
Page 75 - Receiver characteristics; The receiver operates within a BER of 10; over frequency
Barracuda ES.2 SAS Product Manual, Rev. G 69 9.5.2.5 Receiver characteristics The drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equiva-lent impedance as specified in table 20. The receiver operates within a BER of 10 -12 when a SAS signal with valid ...
