Western Digital WDE2170, WDE4360 manual Option Block Functions

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Advanced Product Features

WD Enterprise WDE2170/WDE4360

3.16. Option Block Functions

The firmware uses several pins on the option block to modify the drive characteristics. The definitions for the jumpers follow:

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SCSI ID: Four jumpers are used to identify the default SCSI ID for the drive.

Disable Auto Start: Use of this jumper disables Auto Start, meaning the drive does not spin-up until a START UNIT command is issued. Without this jumper, the drive will spin-up and prepare itself at power on without having to receive a START UNIT command.

Auto Start Delay: Use of this jumper allows the Auto Start to incorporate a delay. The delay time equals the SCSI ID multiplied by 4 seconds.

Disable Target Initiated Synchronous/Wide Negotiation: Use of this jumper dictates that the drive cannot initiate either synchronous negotiation or wide negotiation. Without this jumper the drive will initiate synchronous and wide negotiation when appropriate.

Disable Unit Attention: This controls whether a CHECK CONDITION status is reported following a Power On or Reset sequence. A REQUEST SENSE command following one of those conditions still yields the correct sense data for the UNIT ATTENTION condition, as sense data is generated regardless of the jumper setting. A jumper on this pin disables the generation of a CHECK CONDITION for the Power On and Reset UNIT ATTENTION conditions. With no jumper attached, a CHECK CONDITION status is reported in these situations.

SCSI Configure Automagically (SCAM): The drive is SCAM levels 1 and 2 compliant, which eases user configuration of SCSI IDs and allows for hot plugging on single and multiple drive systems. Use of this jumper allows the drive to function as a SCAM level 2 device. Without the jumper the drive is not a SCAM device.

Active SCSI Termination: To ensure reliable communication, the SCSI bus must be properly terminated. Use of this jumper enables active termination on the drive. Without this jumper, active termination is disabled.

Note: For more information on the option block, refer to section 5.

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RELEASED 04-08-97

4079-001045 Rev. B

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Contents Technical Reference Manual Western Digital 4079-001045 Rev. B Released Escription and F Eatures Installation and Maintenance List of Figures List of Tables Description and Features General DescriptionAdvanced Features Product FeaturesOptions Data Buffer of 1 MegabytePerformance Specifications SpecificationsWDE4360 Physical SpecificationsPhysical Specifications WDE2170 Physical Dimensions Physical Metric Characteristic Dimension ToleranceMechanical Specifications Dimension Inches Millimeters067 069 Mounting Drive Axis Definition ReleasedWDE2170 Current Requirements and Power Dissipation Current Profile WDE2170 +12V Current ProfileInput Voltage Requirements RippleBring-Up Sequence +12 VDC +5 VDCVibration Environmental Specifications Shock and VibrationShock Operating Vibration Temperature and Humidity Temperature and HumidityCooling Component Location MaximumMode Typical Maximum Atmospheric PressureAcoustics AltitudeDrive Baseplate Thermocouple Location Pcba Thermocouple Locations 4079-001045 Rev. B Released Electromagnetic Compatibility EMC Reliability SpecificationsAgency Approvals Product Safety Compatibility Testing SCSI-3 SPI CompliantEmbedded Servo Control Read Caching and Pre-FetchCommand Queuing and Reordering Media Defect ManagementMicrocode Download Reed Solomon ECC On-the-FlyLED Support Zoned RecordingHeaderless Format Option Block Functions Error Recovery Operations Hot Plug/Unplug Support Scsi Interface and Command SET Option Block Physical CharacteristicsPin Designation OPTION/SIGNAL Pins Configuration Notes Option Block Pin AssignmentsPins 7 Pins 5 Pins 3 Pins 1 Scsi ID Jumper TableScsi Physical Interface Power Connectors and CablesScsi Connectors Pin Scsi Connector Drive OutlineSignal Name Pin Number Signal NameIV E O U T L in E SINGLE-ENDED Scsi Connector Differential Scsi Connector Pin SCA-2 Scsi Connector Pin Scsi Connector Pin NumbersSINGLE-ENDED Scsi Connector Maintaining the Drive Installation and MaintenanceElectrostatic Discharge ESD Protection Technical Support Glossary Internal status Glossary WD Enterprise WDE2170/WDE4360 Appendix A. U Nderstanding the Model Number Interface MatrixIndex WD Enterprise WDE2170/WDE4360 Index H0300 4/97

WDE4360, WDE2170 specifications

Western Digital, a leader in data storage, has introduced innovative products like the WDE2170 and WDE4360 drives, which showcase their commitment to cutting-edge technology and reliability. These models are designed for various applications, from personal computing to larger enterprise solutions.

The WDE2170 is a 2TB hard drive positioned for consumers who require substantial storage for multimedia files, documents, and applications. Its interface features a SATA III connection, providing a robust data transfer rate that can reach up to 6Gbps. This speed ensures that users can access their files quickly and efficiently. Notably, the WDE2170 is equipped with a large cache size that enhances its performance during read and write operations. This makes it an excellent choice for gamers and content creators who need rapid access to their files.

On the other hand, the WDE4360 stands out as a 4TB offering, aimed at professionals and businesses requiring higher capacities. It utilizes advanced data management technologies to ensure data integrity and durability. With a focus on security features, the WDE4360 includes built-in encryption options to protect sensitive information. This model also utilizes advanced error recovery technology, which is vital for maintaining data integrity in RAID configurations or server setups.

Both models are built using Western Digital’s proprietary technologies that emphasize reliability and longevity. The drives are designed to withstand rigorous usage scenarios, making them perfect for environments where data access and protection are paramount. Additionally, these drives have low power consumption, which can help reduce operational costs, especially in larger installations.

The overall design of these drives is tailored for optimal performance and heat dissipation, ensuring that they can function effectively even under heavy loads. Western Digital's commitment to quality means that both the WDE2170 and WDE4360 undergo stringent testing processes to meet high standards of reliability before reaching the consumer market.

In conclusion, the Western Digital WDE2170 and WDE4360 are exceptional storage solutions, providing consumers and businesses with the speed, capacity, and reliability they need. These drives exemplify Western Digital's dedication to innovation and quality in the ever-evolving world of data storage. As data requirements continue to grow, these drives are sure to meet the demands of a diverse array of users.
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