Seagate ST950011FS, ST9200011FS, ST9100011FS manual Reliability specifications

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2.11Reliability

2.11.1Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)

The product shall achieve an Annualized Failure Rate - AFR - of 0.44%. AFR and MTBF are population statis- tics that are not relevant to individual units.

AFR and MTBF specifications are based on the following assumptions:

8760 power-on-hours per year.

250 average power cycles per year.

Operations at nominal voltages.

Systems will provide adequate cooling to ensure the case temperatures do not exceed specification.

2.11.2Reliability specifications

Unrecoverable read error rate during typical

1 LBA per 1016 bits read, max

product lifetime

 

 

 

 

Unrecoverable read error rate as product

1 LBA per 1015 bits read, max [1]

approaches end of useful life

 

 

Annualized Failure Rate (AFR)

0.44%

 

 

 

Power cycles

50,000 cycles

 

(at nominal voltage and temperature, with 60 cycles per hour and a 50%

 

duty cycle)

Warranty

To determine the warranty for a specific drive, use a web browser to

 

access the following web page:

 

support.seagate.com/customer/warranty_validation.jsp

 

You will be asked to provide the drive serial number, model number (or

 

part number) and country of purchase. After submitting this information,

 

the system will display the warranty information for your drive.

Preventive maintenance

None required.

 

 

 

Typical Data Retention with Power removed

1 year

[2]

(at 25C)

 

 

Endurance

5 years

[3]

 

 

 

[1]As NAND Flash devices age with use, the capability of the media to retain a programmed value begins to deteriorate. This deterioration is affected by the number of times a particular memory cell is programmed and subsequently erased. As deterioration continues, the memory will reach a point at which the amount of deterioration will exceed the error recovery capabilities of the drive. Therefore an unrecoverable error rate is provided to indicate the expected error rate as the device nears the end of its useful life due to the deterioration.

[2]As NAND Flash devices age with use, the capability of the media to retain a programmed value begins to deteriorate. This deterioration is affected by the number of times a particular memory cell is programmed and subsequently erased. When a device is new, it has a powered off data retention capability of up to ten years. With use the retention capability of the device is reduced. Temperature also has an effect on how long a Flash component can retain its pro- grammed value with power removed. At high temperature the retention capabilities of the device are reduced. Data retention is not an issue with power applied to the SSD. The SSD drive contains firmware and hardware features that can monitor and refresh memory cells when power is applied.

[3]Endurance is the expected life of a product when subjected to a specified workload at a specified operating and stor- age temperature. For the specific workload and performance to achieve this level of endurance, please reference sec- tion 2.4.3.

Pulsar Product Manual, Rev. A

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Contents ST9200011FS ST9100011FS ST950011FS PulsarTMRevision Date Revision historyContents Pulsar Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Drive specifications summary for 200, 100 and 50 GB models Specification summary tablesPulsar Product Manual, Rev. a Default logical geometry for ATA based systems Formatted capacityPerformance, Recording and interface technology Performance Physical characteristicsAccess time Typical access times µs Read WriteTime to Ready Power specifications 200GB DC power requirements 100GB DC power requirements 50GB DC power requirements Typical current profiles Conducted noiseVoltage tolerance Environmental specifications Vibration Electromagnetic immunityOperating vibration Nonoperating vibrationReliability Reliability specificationsAgency certification Chassis Environmental protectionCorrosive environment Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewAir flow CoolingHot-Plug compatibility Serial ATA Sata interfaceSerial ATA connector pin definitions Serial ATA device plug connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex C6H Word Description Value Identify Device commandXxxxh Ffffh Bit Word Description if bit is set to Bit WordDevice supports Software Settings Preservation Media serial number is supported Write-Read-Verify feature set is supported Set Features command values Set Features command3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command Pulsar Product Manual, Rev. a Web Warranty Support Direct.seagate.com Spp.seagate.comData Recovery Services Authorized Service Centers Technical Support Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Presales SupportIndex Page Page Pulsar Product Manual, Rev. a Page Disc Drive, Scotts Valley, California 95066-4544, USA