Fujitsu MAG3091FC, MAF3364FC, MAG3182FC Defect Management Defect list, Alternate block allocation

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3.3Defect Management

3.3.1Defect list

Information of the defect location on the disk is managed by the defect list. The following are defect lists which the IDD manages.

P list (Primary defect list): This list consists of defect location information available at the disk drive shipment and is recorded in a system space. The defects in this list are permanent, so the INIT must execute the alternate block allocation using this list when initializing the disk.

D list (Data defect list): This list consists of defect location information specified in a FORMAT UNIT command by the INIT at the initialization of the disk. This information is recorded in the system space of the disk drive as the G list. To execute the alternate block allocation, the FORMAT UNIT command must be specified.

C list (Certification defect list): This list consists of location information on defective blocks which are detected by the verifying operation (certification) of the data block after the initiation when executing the FORMAT UNIT command. The IDD generates this information when executing the FORMAT UNIT command, and the alternate block allocation is made upon the defective block. This information is recorded in the system space of the disk drive as the G list.

G list (Growth defect list): This list consists of defective logical data block location information specified in a REASSIGN BLOCKS command by the INIT, information on defective logical data blocks assigned alternate blocks by means of IDD automatic alternate block allocation, information specified as the D list, and information generated as the C list. They are recorded in the system space on the disk drive.

The INIT can read out the contents of the P and G lists by the READ DEFECT DATA command.

3.3.2Alternate block allocation

The alternate data block is allocated to a defective data block (= sectors) in defective sector units by means of the defect management method inside the IDD.

The INIT can access all logical data blocks in the user space, as long as there is no error.

Spare sectors to which alternate blocks are allocated can be provided in either "spare sectors in a cylinder" or "alternate cylinders". See Subsection 3.1.2 for details.

The INIT can specify the size and area for spare sectors by the MODE SELECT or MODE SELECT EXTENDED command at the time of the initialization of the disk.

Both of the following are applicable to the alternate block allocation.

Sector slip treatment: Defective sectors are skipped and the logical data block corresponding to those sectors is allocated to the next physical sectors. This treatment is made on the same cylinder as the defective sector's and is effective until all spare sectors in that cylinder are used up.

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Contents C141-E078-02EN Revision Record This page is intentionally left blank Functional Limitations EpromRelated Standards Preface Conventions MAG3182FC Model namesMAF3364FC MAG3091FCSafety Precautions Page Fibre Channel Interface Specifications Fibre Channel Interface Maintenance ManualManual Organization Fibre Channel Interface Product Contents Appendix a Locations of Connectors Glossary GL-1 Abbreviations AB-1 Figures Tables This page is intentionally left blank Standard Features Hardware Structure System Configuration General DescriptionStandard Features Page Page MAF3364FC outer view Disk/head configuration Page FC-AL system configuration Specifications Hardware SpecificationsHardware Specifications Model name and part number Function specifications FC-ALMAG3364FC Seek Time MAG series Seek Time Environmental specifications Environmental/power requirementsError rate ReliabilityMtbf = Page Data Space Logical Data Block Addressing Defect Management Cylinder configurationData Format Data SpaceMAF3364FC = 10400 MAG series = Zone layout and track capacity MAF3364FC Zone layout and track capacity MAG seriesAlternate spare area Spare area in cylinders 119,700 CLKs*1 20MHz Track skew/cylinder skew Sector formatPage Format capacity Logical Data Block Addressing Defect Management Defect list Alternate block allocationPage Alternate block allocation by Format Unit command Alternate block allocation by Reassign Blocks command C141-E078-02EN This page is intentionally left blank Installation Requirements Mounting Requirements External dimensionsExternal dimensions MAF3364FC External dimensions MAG series Mounting IDD orientationMounting frame structure Limitation of side-mounting Surface temperature check point HDCService clearance area Air pressure adjustment hole Current waveform +12 VDC 11 Connector location of SCA2 type interface model Interface connector AMPInstallation Page Motor start mode Setting Loop ID settingMode settings GNDMounting Drives Mounting procedures Remark Checking connection Checking the IDD connection a Checking the IDD connection B Formatting Setting parameters C141-E078-02EN Arre ∙ PERPage X0XXX DiscXffff RlecDismounting Drive This page is intentionally left blank Diagnostics Self-diagnostics Diagnostics and MaintenanceDiagnostics Maintenance Information Self-diagnostic functionsPage PER Test programs Maintenance Information Maintenance requirements C141-E078-02EN Revision numbers Revision labelIndicating revision numbers Appendix a Locations of Connectors Locations of ConnectorsFigure A.1 Locations of connectors Appendix B Connector Signal Allocation Interface FC-SCA Connector Signal AllocationGND Appendix C Model Names and Product Numbers Model Names and Product NumbersModel name Data block Total Mounting Length Fibre Channel Interface Function Specifications Appendix D Fibre Channel Interface FunctionsOrdered Queue Type ACA Type Untagged Simple Queue TypeHead of Queue Type Terminate TaskTable D.1 Fibre channel interface function specifications2 Table D.1 Fibre channel interface function specifications3 Raen Uaen Eaen Receive Diagnostic Results Table D.1 Fibre channel interface function specifications5Mode Sense Reserve Release CopySearch Block Equal Send DiagnosticPREVENT/ALLOW Medium Removal Search Block High Search Block LOWCompare Copy & Verify Write Buffer Diagnostic Read DataRead Defect Data Read BufferRecover Data Diagnostic Format IDDiagnostic Read ID Recover IDThis page is intentionally left blank CDB FREE, ARBITRATION, SELECTION, ReselectionCCS LUNPage ALT ACKAEN AsciiPCA MSGOEM PMIThis page is intentionally left blank Page

MAG3182FC, MAF3364FC, MAG3091FC specifications

Fujitsu has established itself as a leading provider of storage solutions, with a robust lineup that includes the MAG3182FC, MAG3091FC, and MAF3364FC hard drives. These models cater to the needs of enterprise and data center environments, focusing on reliability, performance, and advanced technology.

The Fujitsu MAG3182FC is a Fibre Channel hard drive designed for high-speed data transfer and optimal storage performance. With a capacity of 18.2 GB, it is built for applications requiring rapid access to data. The drive operates at a spindle speed of 10,000 RPM, ensuring quick data retrieval and low latency. It features a 2 Gbps Fibre Channel interface, which allows for fast communication between the drive and the server, making it ideal for environments that demand high throughput, such as transaction processing and database management.

Next in line is the Fujitsu MAG3091FC. This model takes the capabilities of its predecessor a step further with a capacity of 9.1 GB and similar 10,000 RPM speed. The MAG3091FC is also equipped with a 2 Gbps Fibre Channel interface, providing the same high-performance connectivity. Its reliability is enhanced with advanced error correction and a design that minimizes the risk of data loss, making it suitable for mission-critical applications where uptime is essential.

Lastly, the Fujitsu MAF3364FC hard drive is tailored for enterprise-level operations, featuring a capacity of 36.4 GB. It utilizes a 10,000 RPM spindle speed and is built with the same 2 Gbps Fibre Channel interface, ensuring swift access to stored data. The MAF3364FC stands out for its improved data integrity features, including sophisticated error correction codes and a robust design that enhances durability. Its higher capacity combined with fast access times makes it a versatile choice for data-intensive applications and large-scale storage solutions.

All three drives incorporate Fujitsu's commitment to innovation, featuring technologies like S.M.A.R.T (Self-Monitoring, Analysis, and Reporting Technology) for predictive failure analysis. They are designed to operate in demanding environments, ensuring that businesses can rely on them for consistent performance and data protection. In summary, the Fujitsu MAG3182FC, MAG3091FC, and MAF3364FC represent a powerful collection of enterprise-grade hard drives, providing advanced features and technologies that meet the rigorous demands of modern data storage needs.