Seagate ST3146855SS - Cheetah 146.8 GB Hard Drive Support and Manuals
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Popular Seagate ST3146855SS Manual Pages
SAS System Builder Resource Guide: System builders info on the SCSI to SAS transition (258K, PDF) - Page 3
...; Nonrecoverable error rate improved by eliminating the single point of failure of up to cool processors • Result: lower overall costs
2.5-inch Tier 1 Best-Fit Applications
• Mainstream enterprise applications • File and print • Blade servers • Rack and tower servers • Storage arrays
Seagate Cheetah Drive
The Seagate Cheetah 15K.6 and Cheetah NS drives set...
Cheetah 15K.5 Product Overview - Page 2
...8226; Nonrecoverable error rate has been improved by a factor of Seagate Technology LLC. Printed in the most reliable ever; One gigabyte, or GB, equals one billion bytes when referring to 300GB, the Cheetah 15K.5 also delivers 36 percent higher sequential performance. While doubling available capacity to hard drive capacity.
Enabling New Opportunities
• Cheetah 15K.5 drives employ...
Cheetah 15K.5 Data Sheet - Page 2
...® 15K.5
Mainstream enterprise hard drive storage
Lowest Cost of Ownership
• Fifth-generation Cheetah 15K drive is designed and manufactured by verifying-during drive idle time. Specifications 300 GB1 146.8 GB1 73.4 GB1
Model Number Capacity Formatted 512 Kbytes/Sector (GB) External Transfer Rate (MB/s)
Ultra320 SCSI 4-Gb/s Fibre Channel 3-Gb/s Serial Attached SCSI Performance...
Cheetah 15K.5 SAS Product Manual - Page 4
... 56 9.4.1 SAS physical interface 57 9.4.2 Physical characteristics 59 9.4.3 Connector requirements 59 9.4.4 Electrical description 60 9.4.5 Pin descriptions 60 9.4.6 SAS transmitters and receivers 61 9.4.7 Power 61 9.5 Signal characteristics 61 9.5.1 Ready LED Out 61 9.5.2 Differential signals 62
10.0 Seagate Technology support services 73
ii
Cheetah 15K.5 SAS Product Manual, Rev.
Cheetah 15K.5 SAS Product Manual - Page 14
... spinning) • Adaptive seek velocity; improved seek performance
8
Cheetah 15K.5 SAS Product Manual, Rev. 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 enhanced system performance.
• 300 Mbytes/sec...
Cheetah 15K.5 SAS Product Manual - Page 15
...installed accessories
OEM standard drives are shipped with the Cheetah 15K.5 SAS Installation Guide, part number 100384785, and the Safety and Regulatory Agency Specifications, part number 75789512 (unless otherwise specified). See the Mode Select (6) parameter list table in one of 4 bytes.
Seagate... OEM models are formatted to the value in the Number of Blocks field. Seagate drives also ...
Cheetah 15K.5 SAS Product Manual - Page 17
....
4.2
Seek time
See Section 9.4.1, "SAS physical interface" on page 57 and the SAS Interface Manual (part number 100293071) for additional timing details.
4.2.1
Access time
Not Including controller overhead1, 2 (msec)
Read
Write
Average
Typical
3.5
4.0
Single track Typical
0.2
0.4
Full stroke
Typical
6.8
7.5
1.
Access to hard drive capacity. Accessible capacity may vary...
Cheetah 15K.5 SAS Product Manual - Page 21
...) are applied.
Cheetah 15K.5 SAS Product Manual, Rev. 5.0 Reliability specifications
The following :
• The drive is not considered for purposes of recovered error specifications. Unrecoverable Data Errors resulting from error rate computations. • Assume random data. • Default OEM error recovery settings are specified at less than 1 error in this manual (see Section...
Cheetah 15K.5 SAS Product Manual - Page 24
... the interface when the temperature exceeds a set at which to measure the rate.
The first trip point is set threshold. There is a separate Failure History Counter for a given attribute. You can
18
Cheetah 15K.5 SAS Product Manual, Rev. If the number of total operations for each time the error rate is unacceptable and decremented (not to...
Cheetah 15K.5 SAS Product Manual - Page 44
The drive firmware error recovery algorithms consists of the unrecovered error rate which may consist of individual LBAs. Reallocations are one , the RC bit is zero, and the recovery time limit for all error recovery within the limits defined by the read command is allowed to take up to 00 01.
38
Cheetah 15K.5 SAS Product Manual, Rev. Setting these...
Cheetah 15K.5 SAS Product Manual - Page 55
... BYTCHK bit Write Write and Verify DPO bit Write Buffer (modes 0, 2, supported) Firmware Download option (modes 5, 7, Ah and Bh supported) [3] Write Extended DPO bit
Command code 07h 1Ch
17h 57h 03h
16h
56h
01h 31h 30h 32h 0Bh 2Bh 1Dh
33h 1Bh 35h 00h 2Fh
0Ah 2Eh
3Bh
2Ah
Supported Y Y Y Y Y Y Y Y Y Y Y Y N Y Y N Y N N N Y Y Y Y Y N Y Y Y Y Y Y Y Y Y Y
Y Y
Cheetah 15K.5 SAS Product Manual, Rev.
Cheetah 15K.5 SAS Product Manual - Page 57
Default values
Default values are hard-coded in the drive firmware stored in the SAS Interface Manual.
R# Four ASCII digits representing the last four digits of mode parameters:
1.
These default values can request and receive from the drive a list of new firmware into the flash E-PROM. Saved values
Saved values are changeable.
2.
9.3.1
Inquiry data
Table 9 lists the ...
Cheetah 15K.5 SAS Product Manual - Page 79
...Seagate Service Centers
Presales Support Our Presales Support staff can send questions or comments 24 hours daily and exchange messages with product information, program benefits and sales tools. To learn more about the benefits or to register, go to assist you determine which Seagate products are not available on the web. Cheetah 15K.5 SAS Product Manual, Rev. Technical Support Seagate...
Cheetah 15K.5 SAS Product Manual - Page 80
..., go to the "Contact Us" page on www.seagate.com.
74
Cheetah 15K.5 SAS Product Manual, Rev.
Customer Service Operations
Warranty Service Seagate offers worldwide customer support for assistance.
USA/Canada/Latin America support services
For an extensive list of defective products. Resellers or end users of drive products should contact their place of telephone numbers to...
Cheetah 15K.5 SAS Product Manual - Page 83
... 33 reliability 9
specifications 15 reliability and service 16 repair and return information 21 reporting actual retry count 56 reservation conflict status 56 resonance 33 return information 21 rotation speed 11
S
safety 3 SAS
interface 60 physical interface 57 task management functions 45 SAS documents 5
SAS Interface Manual 3, 5
SCSI interface commands supported 47
seek error defined 16 rate...
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