Fujitsu MAP3735FC, MAP3147FC manual Troubleshooting at the repair site, Disk drive troubleshooting

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6.4 Troubleshooting Procedures

6.4.3Troubleshooting at the repair site

For maintenance at this level, we recommend additional testing of the disk drive and signal checking.

The sense data posted from the IDD helps with troubleshooting. This sense data makes the error type clear (functional, mechanical, or electrical error). Chapter 7 error analysis by sense data, and gives supplementary information on finding the error cause (faulty part).

Table 6.3 lists how to detect a faulty disk drive subassembly. This fault finding requires a working host computer or disk drive test equipment to recreate the error conditions.

If the detected error cannot be recreated in an ordinary test, disk drive conditions can be changed to force the error to recur. This is done by changing the DC voltage or the ambient temperature of the disk drive.

If the error does not recur with changed conditions, the disk drive is not faulty. If no error occurs in the disk drive test, notify the user of the test results, and find out from the user the environment conditions where the disk drive is used.

 

Table 6.3

Disk drive troubleshooting

 

 

 

 

Item

 

 

Recommended action

 

 

 

Frequent or repeated seek errors

 

Collect sense data, and see Chapter 7.

 

 

Replace the disk drive, and check that the test method is correct. If the

 

 

error recurs, it is likely that the disk drive is normal but the test method

 

 

is incorrect.

 

 

 

Intermittent or nonfatal errors

 

Replace the disk drive, and check that the test method is correct. If the

 

 

error recurs, it is likely that the disk drive is normal but the test method

 

 

is incorrect.

 

 

To check performance, change the disk drive conditions by changing

 

 

the voltage or temperature.

 

 

 

 

If the disk drive error recurs or a possibly faulty part is found by troubleshooting, return the complete disk drive to the factory for repair. A media defect list must be included with a disk drive returned to the factory.

If the possibly faulty part is the disk enclosure, return the whole disk drive to the factory for repair. Also if a clear error (erroneous servo track information or noisy drive) is detected in the disk enclosure, return the whole disk drive to the factory. A media defect list must be included with a disk drive returned to the factory.

Damage

Never open the disk enclosure in the field. Opening the disk enclosure may cause an irreparable fault.

C141-E163

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Contents MAP3147FC MAP3735FC Disk Drives PRODUCT/MAINTENANCE Manual For Safe Operation Overview of Manual PrefaceConventions for Alert Messages PrefaceC141-E163 Iii This page is intentionally left blank Important Alert Messages Important Alert ItemsImportant Alert Items C141-E163 Vii This page is intentionally left blank Product Maintenance ManualThis page is intentionally left blank Referenced Standards This page is intentionally left blank Contents Contents InstallationAppendix a Connector Signal Allocation Illustrations Tables This page is intentionally left blank General Description Standard Features Hardware Structure System ConfigurationGeneral Description Standard FeaturesStandard Features General Description FC model drives outer view Hardware StructureMAP3147FC MAP3735FC Disk/head configurationExample of FC-AL system configuration System ConfigurationGeneral Description Hardware Specifications Model name and order number Hardware SpecificationsModel names and order numbers MAP3147FCFunction specifications Specifications32/34 Meeprml FC-ALHardware Specifications Environmental specifications Environmental/power requirementsIops Reliability Error rateMTBF= Hardware Specifications This page is intentionally left blank Cylinder configuration Data Space Logical Data Block Addressing Defect ManagementData Space SAS69 Data FormatZone layout and track capacity Data SpaceAlternate spare area Track format Data SpaceMsec Servo frame = 241 zone 0 ~ 408 zone Sector format Track skew/head skewData Format Format capacity Logical Data Block AddressingData Format Defect Management Defect Management Defect listAlternate block allocation Alternate block allocation by Format Unit command Alternate block allocation by Reassign Blocks command Write Write Extend Defect Management This page is intentionally left blank Mounting Requirements External dimensions Installation RequirementsInstallation Requirements Mounting Mounting RequirementsMounting frame structure Surface temperature check point HDCMPU Service clearance area Current waveform +12 VDC Power Supply RequirementsAC noise filter recommended Connection Requirements Connection Requirements Connector10 SCA2 type connector Installation Installation Setting Loop ID setting SettingMode settings Motor start modeMounting Drives Mounting procedures Dismounting Drives Installation Checking connection Checking the IDD connection a Checking the IDD connection B Formatting C141-E163 Setting parameters Arre AwreArre Awre PER Disc XffffXxxx Read/write Self-diagnostic functions Diagnostics Self-diagnosticsDiagnostics and Maintenance Diagnostics Test programs Maintenance Information Precautions Maintenance InformationMaintenance requirements Maintenance Information Maintenance levels Revision label example Revision numbersTests Indicating revision numbers Tools and test equipmentTest flowchart Diagnostic test Operation Check Initial seek operation checkOperation test Troubleshooting with disk drive replacement in the field Troubleshooting ProceduresSystem-level field troubleshooting Disk drive troubleshooting Troubleshooting at the repair siteFinding possibly faulty parts Troubleshooting with parts replacement in the factoryError Analysis Information Collection Sense Data Analysis Error Analysis Information Collection Sense dataSense key, sense code, and subsense code ILI Error AnalysisLSB SksvDefinition of sense data Sense Data AnalysisSense data 3-0C-03, 4-40-xx, 4-44-xx, and 4-C4-xx Sense data 1-1x-xx, 3-1x-xx and E-1D-00 Disk read errorInterface FC-SCA Connector Signal Allocation Appendix a Connector Signal AllocationConnector Signal Allocation Glossary Target Targ GlossaryAcronyms and Abbreviations RSV Acronyms and AbbreviationsECC BcrcIndex Mode SELECT/MODEMtbf Mttr PADC141-E163 IN-3 This page is intentionally left blank Fujitsu Canada INC This page is intentionally left blank READER’S Comment Form This page is intentionally left blank

MAP3735FC, MAP3147FC specifications

Fujitsu has been a prominent player in the hard disk drive market, with its MAP3147FC and MAP3735FC models standing out in terms of performance and reliability. These drives are engineered to meet the growing demands of enterprise applications, providing robust solutions for data storage in critical environments.

The Fujitsu MAP3147FC, with a capacity of 147 GB, is optimized for high-speed data access and storage efficiency. This 3.5-inch SCSI drive operates at a rotational speed of 15,000 RPM, ensuring rapid data retrieval and minimized latency, making it ideal for applications requiring quick transaction processing. It features a 4 Gbps Fibre Channel interface, which enhances connectivity and system integration, promoting seamless communication between devices in storage area networks.

On the other hand, the MAP3735FC model offers a higher capacity of 300 GB. It shares similar specifications with its counterpart, including the 15,000 RPM speed, which guarantees top-notch performance for mission-critical applications. The MAP3735FC, like the MAP3147FC, incorporates advanced technologies such as Command Queuing, which optimizes the execution of multiple read and write commands in a queue. This feature is particularly beneficial in environments with high I/O demands, improving overall system throughput and efficiency.

Both drives utilize sophisticated error correction techniques, ensuring data integrity and reliability. They are equipped with features like S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology), which continuously monitors the health of the drives and helps predict potential failures, allowing for proactive maintenance and data protection.

In terms of physical characteristics, both models are designed to withstand the rigors of continuous operation. They are built with a rugged casing to protect against vibration and shock, making them suitable for use in enterprise-level servers and storage systems. Their design also allows for efficient heat dissipation, which is critical for maintaining optimal performance during extended use.

In summary, Fujitsu's MAP3147FC and MAP3735FC hard drives embody a combination of high speed, reliability, and advanced features tailored for enterprise environments. Their robust performance, large storage capacities, and reliable error correction technologies make them an excellent choice for businesses looking to optimize their data storage solutions and ensure seamless operation in demanding applications. With Fujitsu's commitment to quality and innovation, these models continue to meet the evolving needs of the data storage industry.
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