Western Digital WDE4360 Input Voltage Requirements, Ripple, Bring-Up Sequence, +12 VDC +5 VDC

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WD Enterprise WDE2170/WDE4360

Specifications

2.4.3. Input Voltage Requirements

The input voltage requirements for the WDE2170 and WDE4360 are as follows:

+ 5V ± 5% and + 12V ± 5%

2.4.4. Ripple

 

Table 2-9. Voltage Ripple

 

 

 

 

 

 

+12 VDC

 

+5 VDC

 

 

 

 

Maximum

Start: 400 mV (peak-to-peak)

 

100 mV (peak-to-peak)

 

Run: 150 mV (peak-to-peak)

 

 

 

 

 

 

Frequency

0-20 MHz

 

0-20 MHz

 

 

 

 

2.4.5. Bring-Up Sequence

After power is applied, the following events occur as the drive becomes ready for use.

Note: Typical spindle start time appears in Table 2-1.

1.The microprocessor tests itself, the on-board memory, and components on the printed circuit board assembly (PCBA).

2.The SCSI interface is enabled to accept the following commands: Inquiry, Request Sense, Start/Stop Unit, Test Unit Ready. Refer to the Western Digital SCSI Implementation Guide (document number 4096-001116) for additionally supported SCSI commands and features.

3.Internal electronic component initialization and testing continues.

4.If the Auto Start option is enabled, the motor spins up.

5.The servo system calibrates itself.

6.Additional configuration information is read from an area on the disk that is reserved for the drive’s internal use.

7.A self test is performed on the read/write path.

8.The drive is ready to read and write data.

If an error occurs during the bring-up sequence, sense data is available if the SCSI interface is working; otherwise the LED, if installed, flashes.

If a reassign was in progress when the drive was turned off, the drive automatically completes that operation during startup.

4079-001045 Rev. B

RELEASED 04-08-97

13

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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 General Description Description and FeaturesProduct Features Advanced FeaturesData Buffer of 1 Megabyte OptionsSpecifications Performance SpecificationsPhysical Specifications Physical Specifications WDE2170WDE4360 Physical Metric Characteristic Dimension Tolerance Physical DimensionsDimension Inches Millimeters Mechanical Specifications067 069 Drive Axis Definition Released MountingWDE2170 Current Requirements and Power Dissipation WDE2170 +12V Current Profile Current ProfileRipple Input Voltage RequirementsBring-Up Sequence +12 VDC +5 VDCEnvironmental Specifications Shock and Vibration ShockVibration Operating Vibration Temperature and Humidity Temperature and HumidityCooling Component Location MaximumAtmospheric Pressure Mode Typical MaximumAcoustics AltitudeDrive Baseplate Thermocouple Location Pcba Thermocouple Locations 4079-001045 Rev. B Released Reliability Specifications Agency Approvals Product SafetyElectromagnetic Compatibility EMC SCSI-3 SPI Compliant Compatibility TestingEmbedded Servo Control Read Caching and Pre-FetchMedia Defect Management Command Queuing and ReorderingMicrocode Download Reed Solomon ECC On-the-FlyZoned Recording Headerless FormatLED Support Option Block Functions Error Recovery Operations Hot Plug/Unplug Support Scsi Interface and Command SET Physical Characteristics Pin DesignationOption Block Option Block Pin Assignments OPTION/SIGNAL Pins Configuration NotesScsi ID Jumper Table Pins 7 Pins 5 Pins 3 Pins 1Power Connectors and Cables Scsi ConnectorsScsi Physical Interface Drive Outline Pin Scsi ConnectorSignal Name Signal Name Pin NumberIV E O U T L in E SINGLE-ENDED Scsi Connector Differential Scsi Connector Pin Scsi Connector Pin Numbers Pin SCA-2 Scsi ConnectorSINGLE-ENDED Scsi Connector Installation and Maintenance Electrostatic Discharge ESD ProtectionMaintaining the Drive Technical Support Glossary Internal status Glossary WD Enterprise WDE2170/WDE4360 Interface Matrix Appendix A. U Nderstanding the Model NumberIndex 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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