SEAGATE ST3146755SS - Manual

Cheetah T10 SAS Product Manual, Rev. A 1 List of Figures Figure 1. Cheetah T10 SAS disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. Typical ST3300555SS drive current profiles . . . . . . . . . . . . . ....

Cheetah T10 SAS Product Manual, Rev. A 1 1.0 Scope This manual describes Seagate Technology ® LLC, Cheetah ® SAS (Serial Attached SCSI) disc drives. Cheetah drives support the SAS Protocol specifications to the extent described in this manual. The SAS Inter- face Manual (part number 100293071) descr...

Cheetah T10 SAS Product Manual, Rev. A 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 performanc...

4 Cheetah T10 SAS Product Manual, Rev. A 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 selecte...

Cheetah T10 SAS Product Manual, Rev. A 5 2.3 Reference documents Cheetah T10 SAS Installation Guide Seagate part number: 100433695 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 ...

Cheetah T10 SAS Product Manual, Rev. A 7 3.0 General description Cheetah drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Serial Attached SCSI (SAS) interface to provide high performance, high cap...

8 Cheetah T10 SAS Product Manual, Rev. A 3.1 Standard features Cheetah 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 download...

Cheetah T10 SAS Product Manual, Rev. A 9 3.4 Reliability • 1,400,000 hour MTBF (Annualized Failure Rate (AFR) of 0.62%)• 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 by...

10 Cheetah T10 SAS Product Manual, Rev. A 3.8 Options (factory installed) 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 capa...

Cheetah T10 SAS Product Manual, Rev. A 11 4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah drives. 4.1 Internal drive characteristics ST3300555SS ST3146755SS ST373355SS Drive capacity 300.0 146.8 73.4 Gb...

12 Cheetah T10 SAS Product Manual, Rev. A 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 cha...

Cheetah T10 SAS Product Manual, Rev. A 13 The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 30 sec-onds (maximum) from removal of DC power. There is no power control switch on the drive. 4.4 Prefetch/multi-segmented cache control The drive provides a pref...

14 Cheetah T10 SAS Product Manual, Rev. A 4.5.1 Caching write data Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive performs the Write command. If read caching is enabled (RCD=0), then d...

Cheetah T10 SAS Product Manual, Rev. A 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 rates T...

16 Cheetah T10 SAS Product Manual, Rev. A 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 seek p...

Cheetah T10 SAS Product Manual, Rev. A 17 5.2.3 Hot plugging the drive When a disc is powered on by switching the power or hot plugged, the drive runs a self test before attempting to communicate on its’ interfaces. When the self test completes successfully, the drive initiates a Link Reset starting...

18 Cheetah T10 SAS Product Manual, Rev. A Reporting control Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to the reporting method, the firmware will issue to the host an 01-5Dxx sense code. The error code is preserved through bus resets and...

20 Cheetah T10 SAS Product Manual, Rev. A 5.2.6.2.1 State of the drive prior to testing The drive must be in a ready state before issuing the Send Diagnostic command. There are multiple reasons why a drive may not be ready, some of which are valid conditions, and not errors. For example, a drive may...

Cheetah T10 SAS Product Manual, Rev. A 21 2. The Self-Test Results Value field is set to Fh 3. The drive will store the log page to non-volatile memory After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-Test Results Log page in non-vola...

Cheetah T10 SAS Product Manual, Rev. A 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 drive a...

Cheetah T10 SAS Product Manual, Rev. A 25 Degrees C ambient. [2] For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 15,000 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the driv...

28 Cheetah T10 SAS Product Manual, Rev. A Figure 4. Typical ST373355SS drive current profiles

Cheetah T10 SAS Product Manual, Rev. A 29 6.3 Power dissipation ST3300555SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 14.22 watts (48.52 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (...

32 Cheetah T10 SAS Product Manual, Rev. A 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). Maximum w...

Cheetah T10 SAS Product Manual, Rev. A 33 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 Effe...

Cheetah T10 SAS Product Manual, Rev. A 35 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 10-500 Hz @ 0.5 G (zero to peak) Vibration may be applied in the X, ...

36 Cheetah T10 SAS Product Manual, Rev. A 6.4.7 Acoustics Sound power during idle mode shall be 3.6 bels typical when measured to ISO 7779 specification. Sound power while operating shall be 4.3 bels typical when measured to ISO 7779 specification. There will not be any discrete tones more than 10 d...

Cheetah T10 SAS Product Manual, Rev. A 37 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 er...

38 Cheetah T10 SAS Product Manual, Rev. A 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 max...

Cheetah T10 SAS Product Manual, Rev. A 39 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 Diagnostic R...

Cheetah T10 SAS Product Manual, Rev. A 41 8.0 Installation Cheetah disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to accom...

42 Cheetah T10 SAS Product Manual, Rev. A 8.2 Cooling Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 6.4.1, "Temperature." The rack, cabinet, or drawer environment ...

Cheetah T10 SAS Product Manual, Rev. A 45 9.0 Interface requirements This section partially describes the interface requirements as implemented on Cheetah drives. Additional infor-mation is provided in the SAS Interface Manual (part number 100293071). 9.1 SAS features This section lists the SAS-spec...

46 Cheetah T10 SAS Product Manual, Rev. A 9.2 Dual port support Cheetah SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address. The two ports run at the same link rate. The first port to successfully complet...

Cheetah T10 SAS Product Manual, Rev. A 47 9.3 SCSI commands supported Table 8 lists the SCSI commands supported by Cheetah drives. Table 8: Commands supported by Cheetah T10 SAS family drives Command name Command code Supported Change Definition 40h N Compare 39h N Copy 18h N Copy and Verify 3Ah N F...

Cheetah T10 SAS Product Manual, Rev. A 51 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: Cheetah T10 SAS inquiry data * Copyright year (changes with actual year). ** SCSI Revision sup...

Cheetah T10 SAS Product Manual, Rev. A 53 Table 10: ST3300555SS Mode Sense data MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 22 ec b2 5c 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 0...

56 Cheetah T10 SAS Product Manual, Rev. A 9.4 Miscellaneous operating features and conditions Table 13 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 supported....

Cheetah T10 SAS Product Manual, Rev. A 57 9.4.1 SAS physical interface Figure 16 shows the location of the SAS device connector J1. Figures 17 and 18 provide the dimensions of the SAS device. Details of the physical, electrical, and logical characteristics are provided within this section. The opera...

58 Cheetah T10 SAS Product Manual, Rev. A Figure 17. 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 REF. ...

Cheetah T10 SAS Product Manual, Rev. A 59 Figure 18. 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. Part numbers for SAS connectors will...

60 Cheetah T10 SAS Product Manual, Rev. A 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 the ...

Cheetah T10 SAS Product Manual, Rev. A 61 9.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 19. The receiver is AC cou-pling to eliminate ground shift noise. Figure 19. SAS transmitters and receivers 9.4.7 Power The drive receives...

62 Cheetah T10 SAS Product Manual, Rev. A 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 17...

Cheetah T10 SAS Product Manual, Rev. A 63 9.5.2.1.2 Receive eye mask Figure 20 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 ((bit...

64 Cheetah T10 SAS Product Manual, Rev. A The leading and trailing edge slopes of figure 20 shall be preserved. As a result the amplitude value of Z1 is less than that given in table 20 and Z1 TOL and Z1 OP shall be defined from those slopes by the following equa- tion: where: Z1 TOL is the value fo...

Cheetah T10 SAS Product Manual, Rev. A 65 9.5.2.2 Transmitter signal characteristics Table 19 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 perfo...

66 Cheetah T10 SAS Product Manual, Rev. A 9.5.2.3 Receiver signal characteristics Table 20 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 23 and figure 24. 9.5.2.3.1 Jitter Table 21 defines the maxi...

Cheetah T10 SAS Product Manual, Rev. A 67 9.5.2.3.2 Receiver jitter tolerance Table 22 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. S...

68 Cheetah T10 SAS Product Manual, Rev. A 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 an...

Cheetah T10 SAS Product Manual, Rev. A 69 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 the ...

Cheetah T10 SAS Product Manual, Rev. A 71 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 23. The receiver operates within a BER of 10 -12 when a SAS signal with valid vol...

Cheetah T10 SAS Product Manual, Rev. A 73 10.0 Seagate Technology support services Online services Internet www.seagate.com for information about Seagate products and services. Worldwide support is available 24 hours daily by e-mail for your questions. Presales Support: www.seagate.com/support/email...

74 Cheetah T10 SAS Product Manual, Rev. A Data Recovery Services Seagate offers data recovery services for all formats and all brands of storage media. Our Data Recovery Ser-vices labs are currently located in North America. To speak with a case management representative, call 1-800-475-0143. Additi...

Cheetah T10 SAS Product Manual, Rev. A 75 European support services For presales and technical support in Europe, dial the Seagate Service Center toll-free number for your spe-cific location. If your location is not listed here, dial our presales and technical support call center at +1-405-324-4714 ...

Cheetah T10 SAS Product Manual, Rev. A 77 Index Numerics 12 volt pins 61 5 volt pins 61 A abort task set function 45 AC coupling 61 AC power requirements 23 ACA active status 56 ACA active, faulted initiator status 56 acoustics 36 active LED Out signal 61 actuator assembly design 7 adaptive caching ...

78 Cheetah T10 SAS Product Manual, Rev. A environment 42 environmental limits 32 requirements 15 environmental control 35 error management 37 rates 15 errors 37 F FCC rules and regulations 3 features 8 interface 45 firmware 8 corruption 50 flawed sector reallocation 8 Format command execution time 1...

80 Cheetah T10 SAS Product Manual, Rev. A surface stiffness allowable for non-flat surface 43 switches 41 synchronized spindle operation 56 system chassis 43 T task management functions 45 Abort task set 45 Clear ACA 45 Clear task set 45 terminate task 45 task management response codes 45 Function c...