Maxtor 88400D8 Logical Block Addressing, Defect Management Zone DMZ, Software ECC Correction

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PRODUCTDESCRIPTION

Logical Block Addressing

The Logical Block Address (LBA) mode can only be utilized in systems that support this form of translation. The cylinder, head and sector geometry of the drive, as presented to the host, differs from the actual physical geometry.

The host AT computer may access a drive of set parameters: number of cylinders, heads and sectors per track, plus cylinder, head and sector addresses. However, the drive can’t use these host parameters directly because of zoned recording techniques. The drive translates the host parameters to a set of logical internal addresses for data access.

The host drive geometry parameters are mapped into an LBA based on this formula:

LBA

=

(HSCA - 1) + HHDA x HSPT + HNHD x HSPT x HCYA

(1)

 

=

(HSCA - 1) + HSPT x (HHDA + HNHD x HCYA)

(2)

where

HSCA = Host Sector Address, HHDA = Host Head Address

 

 

HCYA = Host Cylinder Address, HNHD = Host Number of Heads

 

 

HSPT = Host Sectors per Track

 

The LBA is checked for violating the drive capacity. If it does not, the LBA is converted to physical drive cylinder, head and sector values. The physical address is then used to access or store the data on the disk and for other drive related operations.

Defect Management Zone (DMZ)

Each drive model has a fixed number of spare sectors per drive, all of which are located at the end of the drive. Upon detection of a bad sector that has been reassigned, the next sequential sector is used.

For example, if sector 3 is flagged, data that would have been stored there is “pushed down” and recorded in sector 4. Sector 4 then effectively becomes sector 3, as sequential sectors are “pushed down” across the entire drive. The first spare sector makes up for the loss of sector 3, and so maintains the sequential order of data. This push down method assures maximum performance.

On-the-Fly Hardware Error Correction Code (ECC)

10 bits, single burst, guaranteed

Software ECC Correction

64 bits, single burst, guaranteed

28 bits, double bursts, guaranteed

Automatic Park and Lock Operation

Immediately following power down, dynamic braking of the spinning disks delays momentarily allowing the read/write heads to move to an inner mechanical stop. A small fixed magnet holds the rotary actuator in place as the disk spins down. The rotary actuator is released only when power is again applied.

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Contents DiamondMax REV EC no Section Description Date U T I O N Before You BeginContents Handling and Installation Product SpecificationsAT Interface Description Host Software Interface Service and Support Interface CommandsGlossary Figures Maxtor Corporation IntroductionManual Organization AbbreviationsConventions Signal ConventionsKey Words NumberingProduct Description DiamondMax 2160 Key FeaturesFunctional / Interface Product FeaturesLogical Block Addressing On-the-Fly Hardware Error Correction Code ECCDefect Management Zone DMZ Software ECC CorrectionCache Management Read-Ahead ModeBuffer Segmentation Automatic Write Reallocation AWRMajor HDA Components Jumper Location/Configuration Subsystem ConfigurationCylinder Limitation Dual Drive SupportDrive Configuration Product SpecificationsPerformance Specifications Models and CapacitiesOutline and Mounting Dimensions Physical DimensionsParameter Standard Metric Power Mode Definitions Power Requirements AverageEPA Energy Star Compliance Environmental LimitsShock and Vibration Reliability SpecificationsStandard Test Methods Safety Regulatory ComplianceHard Drive Handling Precautions Handling and InstallationPre-formatted Drive Important NoticeMulti-pack Shipping Container Unpacking and InspectionRecommended Mounting Configuration Physical InstallationRepacking Installing 5.25-inch Mounting Brackets Drive Jumper SettingsMounting Drive in System Master Device Slave DeviceMounting Drive in 5.25-inch Bay Inch InstallationMounting Drive in 3.5-inch Bay IDE Interface and Power Cabling Detail Attaching IDE Interface and Power CablesSystem Interface Card Cabling Attaching System CablesSystem Mother board Cabling Setting the Bios Cmos System SetupSet the Bios Cmos parameters as follows Model CYL SPT System Hangs During BootSystem/Drive Information Hard Drive PreparationData Connector Interface ConnectorAT Interface Description Pin Description SummaryPin Description Table PIN Name Signal Name Signal DescriptionPIO Data Transfer To/From Device PIO TimingMulti-word DMA Data Transfer DMA TimingInitiating an Ultra DMA Data In Burst Ultra DMA TimingSustained Ultra DMA Data In Burst Host Pausing an Ultra DMA Data In BurstHost Terminating an Ultra DMA Data In Burst Device Terminating an Ultra DMA Data In BurstSustained Ultra DMA Data Out Burst Initiating an Ultra DMA Data Out BurstHost Terminating an Ultra DMA Data Out Burst Device Pausing an Ultra DMA Data Out BurstDevice Terminating an Ultra DMA Data Out Burst Features Register Error RegisterHost Software Interface Task File RegistersSector Number Register Sector Count RegisterCylinder Number Registers Device/Head RegisterCommand Register Timer Value TIME-OUT Period Command Name Command Code Parameters UsedSummary SDHAlternate Status Register Control Diagnostic RegistersDevice Control Register Digital Input RegisterReset Handling Reset and Interrupt HandlingInterrupt Handling Set Feature Commands Interface CommandsRead Sectors Read CommandsRead Verify Sectors Read Multiple Read DMASet Multiple Mode Write CommandsWrite Sectors Write Verify SectorsWrite DMA Write MultipleSet Features Mode Set Feature CommandsValue Description Power Mode Commands Timer Value TIME-OUT Period Word Content Description Initialization CommandsIdentify Drive Word Content Description = Write Cache enabled Initialize Drive Parameters Execute Drive Diagnostic Seek, Format and Diagnostic CommandsError Code Description Format TrackExecute S.M.A.R.T A.R.T. Command SetService Policy Service and SupportNo Quibble Service SupportBulletin Board Service MaxFax ServiceCustomer Service Internet

82160D2, 84320D4, 2160, 83240D3, 86480D6 specifications

Maxtor, known for its innovative storage solutions, produced several pivotal hard drive models during the late 1990s and early 2000s, namely the Maxtor 88400D8, 86480D6, 83240D3, 2160, and 84320D4. Each of these drives showcased unique features and technologies that catered to various computing needs.

The Maxtor 88400D8 stood out with its impressive storage capacity of 8.4 GB, which was considerable at the time. It employed the IDE interface, ensuring broad compatibility with most personal computers. The drive utilized a 5400 RPM spindle speed, optimizing data transfer rates for everyday applications. With a 2 MB cache, it facilitated smoother data retrieval, making it a reliable choice for both home and office use. This model exemplified Maxtor's commitment to enhancing user experience through advanced technologies.

Another noteworthy model, the Maxtor 86480D6, offered an 8.6 GB storage capacity, predicated on similar design principles as the 88400D8. It also featured a 5400 RPM spindle speed and an IDE interface. Its greater data density further improved performance, reducing the time required for searching and accessing large volumes of information. The 86480D6 was particularly favored by users with intensive storage needs, such as graphic designers and multimedia creators.

The Maxtor 83240D3, with a storage capacity of 3.2 GB, catered to users seeking a balance between performance and size. This drive also operated at 5400 RPM and featured an IDE interface. Its compact size made it an attractive option for entry-level systems and budget-conscious consumers who needed dependable storage without excessive capacity.

The Maxtor 2160 and 84320D4 models further diversified the line with distinct features suitable for different user segments. The 2160 offered 2.1 GB of storage, appealing particularly to users of basic office applications. In contrast, the 84320D4 provided 4.3 GB of space, marking a mid-range option for users requiring additional capacity without leapfrogging into high-end solutions.

All these Maxtor models incorporated technologies enhancing reliability and performance, such as Advanced Format technology, which optimized data organization, ensuring efficient use of storage space. These drives also showcased an emphasis on low power consumption, which aligned with growing concerns over energy efficiency in computing.

In summary, the Maxtor 88400D8, 86480D6, 83240D3, 2160, and 84320D4 were crucial entries in the hard drive market, bringing forth features that addressed the diverse needs of users, from casual consumers to professionals demanding superior performance. Their legacy continues to influence hard drive design and performance standards in contemporary storage solutions.
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