Seagate ST336607FC, ST3146807FC, ST373307FC 7 S.M.A.R.T, Controlling S.M.A.R.T, Performance impact

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Cheetah 10K.6 FC Product Manual, Rev. B

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5.2.6Hot plugging the drive

Inserting and removing the drive on the FC-AL will interrupt loop operation. The interruption occurs when the receiver of the next device in the loop must synchronize to a different input signal. FC error detection mecha- nisms, character sync, running disparity, word sync, and CRC are able to detect any error. Recovery is initiated based on the type of error.

The disc drive defaults to the FC-AL Monitoring state, Pass-through state, when it is powered-on by switching the power or hot plugged. The control line to an optional port bypass circuit (external to the drive), defaults to the Enable Bypass state. If the bypass circuit is present, the next device in the loop will continue to receive the output of the previous device to the newly inserted device. If the bypass circuit is not present, loop operation is temporarily disrupted until the next device starts receiving the output from the newly inserted device and regains synchronization to the new input.

The Pass-through state is disabled while the drive performs self test of the FC interface. The control line for an external port bypass circuit remains in the Enable Bypass state while self test is running. If the bypass circuit is present, loop operation may continue. If the bypass circuit is not present, loop operation will be halted while the self test of the FC interface runs.

When the self test completes successfully, the control line to the bypass circuit is disabled and the drive enters the FC-AL Initializing state. The receiver on the next device in the loop must synchronize to output of the newly inserted drive.

If the self-test fails, the control line to the bypass circuit remains in the Enable Bypass state.

Note. It is the responsibility of the systems integrator to assure that no temperature, energy, voltage hazard, or ESD potential hazard is presented during the hot connect/disconnect operation. Discharge the static electricity from the drive carrier prior to inserting it into the system.

Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to insure data integrity.

5.2.7S.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 specific set of failure conditions in the operating per- formance of the drive and the thresholds are optimized to minimize “false” and “failed” predictions.

Controlling S.M.A.R.T.

The operating mode of S.M.A.R.T. is controlled by the DEXCPT and PERF bits on the Informational Exceptions Control mode page (1Ch). Use the DEXCPT bit to enable or disable the S.M.A.R.T. feature. Setting the DEX- CPT bit disables all S.M.A.R.T. functions. When enabled, S.M.A.R.T. collects on-line data as the drive performs normal read and write operations. When the PERF bit is set, the drive is considered to be in “On-line Mode Only” and will not perform off-line functions.

You can measure off-line attributes and force the drive to save the data by using the Rezero Unit command. Forcing S.M.A.R.T. resets the timer so that the next scheduled interrupt is in two hours.

You can interrogate the drive through the host to determine the time remaining before the next scheduled mea- surement and data logging process occurs. To accomplish this, issue a Log Sense command to log page 0x3E. This allows you to control when S.M.A.R.T. interruptions occur. Forcing S.M.A.R.T. with the RTZ command resets the timer.

Performance impact

S.M.A.R.T. attribute data is saved to the disc so that the events that caused a predictive failure can be recre- ated. The drive measures and saves parameters once every two hours subject to an idle period on the FC-AL

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Contents Page Page Page Page Revision Date Writer/Engineer Sheets Affected Revision status summary sheetPage Contents Installation Defect and error managementSeagate Technology support services Interface requirementsCheetah 10K.6 FC Product Manual, Rev. B Vii List of FiguresPage Cheetah 10K.6 FC family disc drive ScopeCheetah 10K.6 FC Product Manual, Rev. B Applicable standards and reference documentation Korean MIC Australian C-TickTaiwanese Bsmi Reference documentsCheetah 10K.6 FC disc drive General descriptionMedia description Standard featuresPerformance ReliabilityFactory-installed options Factory-installed accessoriesUser-installed accessories Unformatted and formatted capacitiesCheetah 10K.6 FC Product Manual, Rev. B Internal drive characteristics Performance characteristicsSeek performance characteristics Access time Format command execution time in minutesStart/stop time General performance characteristicsPrefetch/multi-segmented cache control Cache operationCaching write data Prefetch operation Reliability specifications Preventive maintenance Reliability and serviceService life Service philosophyControlling S.M.A.R.T 7 S.M.A.R.TPerformance impact Reporting control MillisecondsDetermining rate Predictive failuresImplementation State of the drive prior to testingInvoking DST Short and extended testsLog page entries Product warrantyAbort ShippingAC power requirements Physical/electrical specificationsDC power requirements General DC power requirement notesConducted noise immunity Power sequencingCurrent profiles +5V +12VTypical ST373307FC drive +12V current profile Typical ST3146807FC drive +5V current profile Typical ST373307FC drive +5V current profile ST373307FC Power dissipation ST3146807FCCheetah 10K.6 FC Product Manual, Rev. B ST336607FC TemperatureEffective altitude sea level Relative humidityShock and vibration ShockPackage size Packaged/product weight Drop height Recommended mounting Cheetah 10K.6 FC Product Manual, Rev. B Vibration Air cleanlinessAcoustics Mounting configuration dimensions Mechanical specificationsDrive internal defects/errors Defect and error managementDrive error recovery procedures FC-AL system errors Read retry Maximum recovery time per Write retryRead and write retry count maximum recovery times Maximum recovery time perDrive ID/option selection InstallationLED connections Drive Front 1 J6 connector requirementsDrive orientation CoolingAir flow Drive mountingGrounding Fibre Channel link service frames FC-AL featuresInterface requirements Fibre Channel task management functionsNPort login Plogi payload Bytes Fibre Channel port loginFibre Channel Process Login Accept Fibre Channel Process LoginNPort Login Accept ACC payload Bytes Process Login Plri payloadFabric Login Flogi payload Bytes Fibre Channel fabric loginAccept or NPort Login when sending frames to an initiator Fabric Login Accept ACC payload BytesDual port support Fibre Channel Arbitrated Loop optionsFC-AL options supported Option SupportedSupported commands Command code Command name Command code Supported Command name Supported commandsRead descriptor mode Cheetah 10K.6 FC Product Manual, Rev. B Cheetah 10K.6 FC Product Manual, Rev. B Inquiry data Mode Sense dataCheetah 10K.6 FC inquiry data Bytes Data hexCheetah 10K.6 FC Product Manual, Rev. B DEF DEF CHG Cheetah 10K.6 FC Product Manual, Rev. B Miscellaneous features Miscellaneous operating features and conditionsSupported Feature or condition Miscellaneous statusPhysical description Physical characteristicsPart description Positions Part number Features Connector requirementsPin descriptions Pin Signal name Signal typeFC-SCA pin descriptions Fault LED Out PowerFC-AL transmitters and receivers Active LED OutMotor start controls Enable port bypass signals11 SEL6 through SEL0 ID lines Parallel Enclosure Services Interface ESI Setting Hex Dec SettingArbitrated loop physical address Alpa values TTL input characteristics Signal characteristicsLED driver signals Device control codesDifferential Pecl input Transmit eye diagramLink rate GHz Eye diagram data valuesAutomated Services Seagate Technology support services Online ServicesPresales Support Technical SupportUSA/Canada/Latin America Support Services Customer Service CSOEuropean Support Services Asia/Pacific Support Services Africa/Middle East Support ServicesCall Center Toll-free Direct dial Cheetah 10K.6 FC Product Manual, Rev. B Index FC-AL Cheetah 10K.6 FC Product Manual, Rev. B Plogi Cheetah 10K.6 FC Product Manual, Rev. B Cheetah 10K.6 FC Product Manual, Rev. B
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