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Western Digital Ultrastar HC555 20TB HDD Hard Drive 3.5" SAS 3.0 7200rpm with 512MB Cache for NAS / Server 0B47749
HDD Hard Drives

Western Digital Ultrastar HC555 20TB HDD Hard Drive 3.5" SAS 3.0 7200rpm with 512MB Cache for NAS / Server 0B47749

Specifications HDD Hard Drive:

  • Average transfer speed: 285 MB/s
  • Size: 3.5"
  • Type: HDD
  • 24/7 operation: Yes
  • Interface: SAS3
  • Start/stop cycles: 600000
  • Average latency: 4.16 ms
  • Component for:...

Specifications HDD Hard Drive:

  • Average transfer speed: 285 MB/s
  • Size: 3.5"
  • Type: HDD
  • 24/7 operation: Yes
  • Interface: SAS3
  • Start/stop cycles: 600000
  • Average latency: 4.16 ms
  • Component for: Server/workstation
  • HDD speed: 7200 RPM
  • HDD capacity: 20 TB
  • HDD interface transfer speed: 12 Gbit/s
  • Hot-swap: No
  • Mean time between failures (MTBF): 2500000 h
  • Disk buffer...
See full description See full description

  • Usage

    NAS

    Disks for use in NAS (Network-Attached Storage) systems that provide access to data from all devices on a network. They are designed for continuous operation with other such disks in RAID configurations to protect data from failures.

  • Communication Protocol

    Hard drives communicate with the computer through a protocol.

    There are two protocols for HDD hard drives, SATA (for simple use) and SAS (high reliability for corporate use).

    SAS 3.0

    A modern connection standard with high reliability aimed at corporate use.

    The motherboard should have a corresponding connection.

  • Cache Size

    Intermediate temporary memory between the disk and the computer, allowing the hard disk to provide faster and more immediate access to data. It does not have any particular benefit for the average user.

  • Form Factor

    The size of the HDD hard drive.

    3.5

    The classic size of a desktop computer hard disk drive (HDD).

  • Rotation Speed

    The most important feature along with capacity is that the faster the rotation speed of a hard disk, the faster the access and storage of data it can provide.

    7200

    The most popular HDD hard drives, about 33% faster than 5400. Suitable for all uses such as installing programs and games. For installing the operating system, programs, and games, SSD are even faster and remain the best choice.
  • See all
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Product report

Description

Description

Specifications HDD Hard Drive:

  • Average transfer speed: 285 MB/s
  • Size: 3.5"
  • Type: HDD
  • 24/7 operation: Yes
  • Interface: SAS3
  • Start/stop cycles: 600000
  • Average latency: 4.16 ms
  • Component for: Server/workstation
  • HDD speed: 7200 RPM
  • HDD capacity: 20 TB
  • HDD interface transfer speed: 12 Gbit/s
  • Hot-swap: No
  • Mean time between failures (MTBF): 2500000 h
  • Disk buffer size: 512 MB
  • Continuous HDD transfer speed: 272 MiB/s
  • Power consumption (typical): 9.2 W
  • Operating voltage: 5 / 12 V
  • Power consumption (idle): 5.7 W
  • Storage temperature (T-T): -40 - 70 °C
  • Operating temperature (T-T): 5 - 60 °C
  • Operating vibration: 0.67 G
  • Non-operating vibration: 1.04 G
  • Operating shock: 50 G
  • Width: 101.6 mm
  • Weight: 690 g
  • Depth: 147 mm
  • Height: 26.1 mm

Handle Data Center Workload with Proven Technology

The combination of proven hardware with the latest innovative technologies offers the performance, capacity, and reliability needed to manage high-intensity workloads in multi-user data centers, 24/7.

Increase Capacity while Reducing Cost

Western Digital's energy-assisted perpendicular magnetic recording (ePMR) technology allows customers to increase capacities while simultaneously reducing total cost of ownership (TCO), including both $/TB and operational expenses (OpEx).

Rapid certification and integration

The utilization of hardware designs from generations of highly successful products ensures easy certification, seamless integration, and rapid adoption by existing customers.

Reliability You Can Trust

Manufactured from the same platform that has been developed in thousands of data centers around the world, these units provide top-notch and proven reliability for easy data storage.

Increase Density with Low Power

Western Digital's triple state actuator (TSA) increases tracks per inch (TPI) while providing greater control over the actuator arm, allowing for higher capacities with low power.

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Compatibility

Use
NAS, Server

Use

NAS

Disks for use in NAS (Network-Attached Storage) systems that provide access to data from all devices on a network. They are designed for continuous operation with other such disks in RAID configurations to protect data from failures.

Product Details

Capacity
20000 GB

Capacity

The amount of data that a hard disk can store. 2TB and 4TB are the golden ratio of cost and capacity. For simple use, 1TB is likely sufficient. For reference, a 1TB hard disk can hold approximately 250,000 photos taken with a 12MP camera or 250 movies.
Communication Protocol
SAS 3.0

Communication Protocol

Hard drives communicate with the computer through a protocol.

There are two protocols for HDD hard drives, SATA (for simple use) and SAS (high reliability for corporate use).

SAS 3.0

A modern connection standard with high reliability aimed at corporate use.

The motherboard should have a corresponding connection.

Performance

RPM
7200 rpm

RPM

The most important feature along with capacity is that the faster the rotation speed of a hard disk, the faster the access and storage of data it can provide.

7200
The most popular HDD hard drives, about 33% faster than 5400. Suitable for all uses such as installing programs and games. For installing the operating system, programs, and games, SSD are even faster and remain the best choice.
Cache size
512 MB

Cache size

Intermediate temporary memory between the disk and the computer, allowing the hard disk to provide faster and more immediate access to data. It does not have any particular benefit for the average user.

Dimensions

Form Factor
3.5 "

Form Factor

The size of the HDD hard drive.

3.5
The classic size of a desktop computer hard disk drive (HDD).

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Description & Specifications

Specifications HDD Hard Drive:

  • Average transfer speed: 285 MB/s
  • Size: 3.5"
  • Type: HDD
  • 24/7 operation: Yes
  • Interface: SAS3
  • Start/stop cycles: 600000
  • Average latency: 4.16 ms
  • Component for: Server/workstation
  • HDD speed: 7200 RPM
  • HDD capacity: 20 TB
  • HDD interface transfer speed: 12 Gbit/s
  • Hot-swap: No
  • Mean time between failures (MTBF): 2500000 h
  • Disk buffer size: 512 MB
  • Continuous HDD transfer speed: 272 MiB/s
  • Power consumption (typical): 9.2 W
  • Operating voltage: 5 / 12 V
  • Power consumption (idle): 5.7 W
  • Storage temperature (T-T): -40 - 70 °C
  • Operating temperature (T-T): 5 - 60 °C
  • Operating vibration: 0.67 G
  • Non-operating vibration: 1.04 G
  • Operating shock: 50 G
  • Width: 101.6 mm
  • Weight: 690 g
  • Depth: 147 mm
  • Height: 26.1 mm

Handle Data Center Workload with Proven Technology

The combination of proven hardware with the latest innovative technologies offers the performance, capacity, and reliability needed to manage high-intensity workloads in multi-user data centers, 24/7.

Increase Capacity while Reducing Cost

Western Digital's energy-assisted perpendicular magnetic recording (ePMR) technology allows customers to increase capacities while simultaneously reducing total cost of ownership (TCO), including both $/TB and operational expenses (OpEx).

Rapid certification and integration

The utilization of hardware designs from generations of highly successful products ensures easy certification, seamless integration, and rapid adoption by existing customers.

Reliability You Can Trust

Manufactured from the same platform that has been developed in thousands of data centers around the world, these units provide top-notch and proven reliability for easy data storage.

Increase Density with Low Power

Western Digital's triple state actuator (TSA) increases tracks per inch (TPI) while providing greater control over the actuator arm, allowing for higher capacities with low power.

Manufacturer

Manufacturer Details

Warnings & Safety Information

Compatibility

Use
NAS, Server

Use

NAS

Disks for use in NAS (Network-Attached Storage) systems that provide access to data from all devices on a network. They are designed for continuous operation with other such disks in RAID configurations to protect data from failures.

Product Details

Capacity
20000 GB

Capacity

The amount of data that a hard disk can store. 2TB and 4TB are the golden ratio of cost and capacity. For simple use, 1TB is likely sufficient. For reference, a 1TB hard disk can hold approximately 250,000 photos taken with a 12MP camera or 250 movies.
Communication Protocol
SAS 3.0

Communication Protocol

Hard drives communicate with the computer through a protocol.

There are two protocols for HDD hard drives, SATA (for simple use) and SAS (high reliability for corporate use).

SAS 3.0

A modern connection standard with high reliability aimed at corporate use.

The motherboard should have a corresponding connection.

Performance

RPM
7200 rpm

RPM

The most important feature along with capacity is that the faster the rotation speed of a hard disk, the faster the access and storage of data it can provide.

7200
The most popular HDD hard drives, about 33% faster than 5400. Suitable for all uses such as installing programs and games. For installing the operating system, programs, and games, SSD are even faster and remain the best choice.
Cache size
512 MB

Cache size

Intermediate temporary memory between the disk and the computer, allowing the hard disk to provide faster and more immediate access to data. It does not have any particular benefit for the average user.

Dimensions

Form Factor
3.5 "

Form Factor

The size of the HDD hard drive.

3.5
The classic size of a desktop computer hard disk drive (HDD).

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

1.246,13 €
14,00 €   shipping cost