Manual do usuário Seagate CHEETAH 15K.7 SAS ST3450857SS

Manual para o dispositivo Seagate CHEETAH 15K.7 SAS ST3450857SS

Dispositivo: Seagate CHEETAH 15K.7 SAS ST3450857SS
Categoria: Unidade de disco
Fabricante: Seagate
Tamanho: 1.16 MB
Data de adição: 3/27/2013
Número de páginas: 76
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Resumos do conteúdo
Resumo do conteúdo contido na página número 1

Product Manual
Cheetah 15K.7 SAS
Standard models Self-Encrypting Drive models
ST3600057SS ST3600957SS
ST3450857SS ST3450757SS
ST3300657SS ST3300557SS


100516226
Rev. A
May 2009

Resumo do conteúdo contido na página número 2

©2008, Seagate Technology LLC All rights reserved. Publication number: 100516226, Rev. Rev. A May 2009 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Cheetah, SeaTools and SeaTDD are either trademarks or reg- istered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/ or other countries. All other trademarks or registered trademarks are the property of

Resumo do conteúdo contido na página número 3

Contents 1.0 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Standards, compliance and reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1.1 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . .

Resumo do conteúdo contido na página número 4

6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 6.4.5 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.4.6 Air

Resumo do conteúdo contido na página número 5

10.5.2 Differential signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 10.6 SAS-2 Specification compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 10.7 Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 11.0 Seagate Technology support services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resumo do conteúdo contido na página número 6

iv Cheetah 15K.7 SAS Product Manual, Rev. A

Resumo do conteúdo contido na página número 7

1.0 Scope ® ® This manual describes Seagate Technology LLC, Cheetah SAS (Serial Attached SCSI) disk drives. Cheetah 15K.7 drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of Cheetah 15K.7 and other Seagate SAS drives. The Self-Encrypting Drive (SED) Users Guide, part number 100515636 describes the interface, general operation and security features available on SED d

Resumo do conteúdo contido na página número 8

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 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 mu

Resumo do conteúdo contido na página número 9

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 selected sys- tem represents the most popular characteristics for test platforms. The system configurations include: � Typical current use microprocessor � Keyboard � Monitor/display �Printer �Mouse Although the test system with this Seagate model

Resumo do conteúdo contido na página número 10

Seagate also has internal systems in place to ensure ongoing compliance with the RoHS Directive and all laws and regulations which restrict chemical content in electronic products. These systems include standard operat- ing procedures that ensure that restricted substances are not utilized in our manufacturing operations, labora- tory analytical validation testing, and an internal auditing process to ensure that all standard operating procedures are complied with. 2.4 Reference documents SCSI

Resumo do conteúdo contido na página número 11

3.0 General description Cheetah 15K.7 drives provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI inter- face is designed to meet next-generation computing demands for performance, scalability, flexibility and high- density storage requirements. Cheetah 15K.7 drives support the Serial Attached SCSI Protocol as described in the ANSI specifications, this document

Resumo do conteúdo contido na página número 12

3.1 Standard features Cheetah 15K.7 drives have the following standard features: � 1.5 / 3 / 6 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 � 128 - deep task set (queue) � Supports up to 32 initiators � Jumperless configuration. � User-selectable logical block size (512, 520, or 528 bytes per logical block) � Programmable logical block re

Resumo do conteúdo contido na página número 13

Note. There is no significant performance difference between Self-Encrypting Drive and standard (non- Self-Encrypting Drive models. 3.4 Reliability � 1,600,000 hour MTBF (Annualized Failure Rate (AFR) of 0.55%) � 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 one of the supported sizes listed i

Resumo do conteúdo contido na página número 14

4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.7 drives. 4.1 Internal drive characteristics ST3600057SS ST3450857SS ST3300657SS ST3600957SS ST3450757SS ST3300557SS * Drive capacity 600 450 300 Gbytes (formatted, rounded off value) Read/write data heads 8 6 4 Tracks per inch 165,000 165,000 165,000 TPI Peak bits per inch 1,361 1,361 1,361 KBPI 2 Areal Density 225 225 225 Gbits/inch Internal d

Resumo do conteúdo contido na página número 15

4.2.2 Format command execution time (minutes) When changing sector sizes, the format times shown below may need to be increased by 30 minutes. ST3600057SS ST3450857SS ST3300657SS Maximum (with verify) 119 90 58 Maximum (without verify) 60 45 29 Note. There is no significant difference in the format time between SED and non-SED models of the same capacity. Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request for a Status Byte Transfer t

Resumo do conteúdo contido na página número 16

If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command. 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 prefetch (read look-ahead) and m

Resumo do conteúdo contido na página número 17

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 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 set up or changed indepen

Resumo do conteúdo contido na página número 18

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. 8 Seek error rate: Less than 10 errors in 10 seeks Read Error Rates 12 Recovered Data Less than 10 errors in 10 bits transferred (OEM default settings) 16 Unrecovered Data Less than 1 sector in 10 bits transferred 21 Miscorrected Data Less than 1 sector i

Resumo do conteúdo contido na página número 19

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 positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense 8 Key. Recoverable seek errors are specified at Less than 10 errors in 10 seeks. Unrecoverable seek errors (Sense Key = 04h) are clas

Resumo do conteúdo contido na página número 20

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 you to back up the data before an actual failure occurs. Note. The drive’s firmware monitors specific attributes for degradation over time but can’t predict instanta- neous drive failures. Each monitored attribute has been selected to monitor a


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