Seagate CHEETAH ST3300656SS user manual

User manual for the device Seagate CHEETAH ST3300656SS

Device: Seagate CHEETAH ST3300656SS
Category: Computer Drive
Manufacturer: Seagate
Size: 1.34 MB
Added : 6/24/2013
Number of pages: 88
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Abstracts of contents
Summary of the content on the page No. 1

Product Manual
Cheetah 15K.6 SAS
ST3450856SS
ST3300656SS
ST3146356SS


100466193
Rev. A
October 2007

Summary of the content on the page No. 2

©2007, Seagate Technology LLC All rights reserved. Publication number: 100466193, Rev. A October 2007 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

Summary of the content on the page No. 3

Contents 1.0 Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Standards, compliance and reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1.1 Electromagnetic compatibility. . . . . . . . . . . . . . . . . . . .

Summary of the content on the page No. 4

6.4.1 Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6.4.2 Relative humidity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 6.4.5 Acous

Summary of the content on the page No. 5

List of Figures Figure 1. Cheetah 15K.6 SAS disk drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Figure 2. Typical ST3450856SS current profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Figure 3. Typical ST3300656SS current profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Figure 4

Summary of the content on the page No. 6

2 Cheetah 15K.6 SAS Product Manual, Rev. A

Summary of the content on the page No. 7

1.0 Scope ® ® This manual describes Seagate Technology LLC, Cheetah SAS (Serial Attached SCSI) disk drives. Cheetah 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 Cheetah 15K.6 and other Seagate SAS drives. Figure 1. Cheetah 15K.6 SAS disk drive Cheetah 15K.6 SAS Product Manual, Rev. A 1

Summary of the content on the page No. 8

2 Cheetah 15K.6 SAS Product Manual, Rev. A

Summary of the content on the page No. 9

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

Summary of the content on the page No. 10

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

Summary of the content on the page No. 11

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

Summary of the content on the page No. 12

6 Cheetah 15K.6 SAS Product Manual, Rev. A

Summary of the content on the page No. 13

3.0 General description Cheetah drives combine perpendicular recording, giant magnetoresistive (GMR) heads, partial response/max- imum likelihood (PRML) read channel electronics, embedded servo technology, and a Serial Attached SCSI (SAS) interface to provide high performance, high capacity data storage for a variety of systems including engi- neering workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-generation computing

Summary of the content on the page No. 14

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 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) � Perpendicular recording technology � Pr

Summary of the content on the page No. 15

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 in the table below. Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future produ

Summary of the content on the page No. 16

10 Cheetah 15K.6 SAS Product Manual, Rev. A

Summary of the content on the page No. 17

4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah drives. 4.1 Internal drive characteristics ST3450856SS ST3300656SS ST3146356SS *,** Drive capacity 450 300 146 Gbytes (formatted, rounded off value) Read/write data heads 8 6 3 Tracks per inch 150,000 150,000 150,000 TPI Peak bits per inch 1,100 1,100 1,100 KBPI 2 Areal Density 165 165 165 Gbits/inch Internal data rate 1.95 1.95 1.95 Gbits/sec (max)

Summary of the content on the page No. 18

4.2.2 Format command execution time (minutes) ST3450856SS ST3300656SS ST3146356SS 176 144 100 Maximum (with verify) 88 72 50 Maximum (without verify) 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 characteristics Sustainable disk transfer rate*: Minimum 112 Mbytes/sec (typical) Maximum 171 Mbytes/sec (typical) SAS Interface maximum in

Summary of the content on the page No. 19

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 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 cache operations. To select this feature, the host sen

Summary of the content on the page No. 20

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


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