Seagate Exos ST4000NM0095 4TB SAS 12G 7.2K 3.5\

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Seagate Exos ST4000NM0095 4TB SAS 12G 7.2K 3.5" LFF Dual Port HDD

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  • Part Number : ST4000NM0095
  • Brand : Seagate

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Seagate ST4000NM0095 Manufacturer
Manufacturer
Seagate
Seagate ST4000NM0095 Form Factor
Form Factor
3.5" LFF
Seagate ST4000NM0095 Capacity
Capacity
4TB
Seagate ST4000NM0095 Spindle Speed
Spindle Speed
7.2K
Seagate ST4000NM0095 Interface
Interface
SAS
Seagate ST4000NM0095 Data Transfer Rate
Data Transfer Rate
12G

Full Seagate ST4000NM0095 Specifications

Brand Seagate
Form Factor 3.5" LFF
Capacity 4TB
Product Line Exos
Spindle Speed 7.2K
Interface Type SAS
Data Transfer Rate 12G
Workload Enterprise (ENT)
Dual Port Yes
Cache 128MB

Seagate ST4000NM0095 Frequently Asked Questions

What does it mean that a drive has a form factor of 3.5" LFF?

When it comes to server hard drives, "3.5" LFF" refers to the Large Form Factor of 3.5 inches. This specification describes the physical size of the hard drive and the corresponding drive bay in a server or storage system. The 3.5-inch LFF drives have been the dominant standard for enterprise-grade server hard drives for a considerable period, with various capacities and technologies introduced over time.


The transition to the 3.5-inch LFF form factor brought significant advancements in technology:


  1. Increased Storage Capacity: The larger size of LFF drives allowed for more platters and data storage surfaces, resulting in higher-capacity disks. This enabled servers and storage systems to accommodate larger volumes of data.

  2. Enhanced Performance: The additional physical space offered by LFF drives facilitated higher rotational speeds and larger cache sizes, leading to improved data transfer rates and reduced latency. As a result, they became suitable for applications requiring fast access to large datasets, such as databases and high-transaction environments.

  3. Improved Cooling and Heat Dissipation: The larger form factor of LFF drives allowed for better cooling mechanisms, such as fans and heat sinks, which effectively dissipated heat. This capability was essential for maintaining optimal operating conditions in server environments where multiple drives generate substantial heat.

  4. Compatibility and Expandability: Due to the widespread adoption of the 3.5-inch LFF form factor, many server chassis and storage enclosures were designed to accommodate these drives. This standardization ensured compatibility and made it easy for organizations to expand their storage capacity without major infrastructure changes.


In summary, the 3.5-inch LFF form factor represented a significant technological advancement in server hard drives. It offered increased storage capacity, enhanced performance, improved cooling capabilities, and compatibility with existing infrastructure. These advantages made LFF drives a popular choice for enterprise-level storage solutions.

What does it mean if a hard drive runs at 7200 RPM?

7200 RPM, in the context of server hard drives, refers to the speed at which the drive's platters rotate. This specification signifies the number of revolutions per minute. When this feature was initially introduced is in the late 1980s and early 1990s. It was a significant advancement in technology at the time, as previous hard drives had lower rotational speeds, typically around 5400 RPM or lower.


The introduction of 7200 RPM drives brought about several important improvements. Firstly, the faster rotational speed allowed for quicker access to data and faster transfer speeds. This was particularly valuable in server environments where efficient data processing and high-speed data transfer were essential.


Secondly, the enhanced performance of 7200 RPM drives resulted in reduced latency and improved overall system performance. Servers handling large volumes of data and running resource-intensive applications greatly benefited from the faster read and write speeds.


Furthermore, the higher RPM facilitated smoother multitasking capabilities, enabling servers to handle multiple simultaneous operations more effectively. This was particularly advantageous for servers serving multiple users or running complex applications concurrently.


Additionally, the evolution of 7200 RPM drives also saw an increase in storage capacity over time. This combination of higher rotational speed and larger storage capacities provided server administrators with more space to store critical data.


While technology has continued to advance, with the emergence of solid-state drives (SSDs) and even faster rotational speeds, the introduction of 7200 RPM drives marked a significant milestone in the development of hard drive technology. It delivered improved performance, faster data access, and increased storage capacity, catering to the demands of server environments.

What does it mean if a hard drive has an interface of SAS?

The term "SAS Interface" refers to Serial Attached SCSI (SAS), which is a technology that facilitates communication between computer systems and storage devices like hard drives. It is a serial interface that establishes point-to-point connections, offering high-speed, dependable, and scalable connectivity.


The SAS interface was first introduced in 2004 as a successor to the older Parallel SCSI standard. It represented a significant technological advancement for several reasons:


  1. Enhanced Speed and Bandwidth: SAS provided notably faster data transfer rates compared to Parallel SCSI. Initially offering speeds of up to 3 Gbps per lane, subsequent advancements increased it to 6 Gbps and 12 Gbps per lane. This boosted bandwidth facilitated quicker data access, resulting in improved overall system performance.

  2. Scalability: SAS supports point-to-point connections, allowing each storage device to have its dedicated link to the host system. This efficient and independent data transfer capability minimizes potential bottlenecks within the system. Additionally, SAS permits daisy-chaining of multiple devices, enabling seamless expansion of storage capacity while maintaining optimal performance.

  3. Compatibility: SAS interfaces are backward compatible with SATA (Serial ATA) drives, enabling SAS controllers to work with both SAS and SATA drives simultaneously. This flexibility is crucial for systems that require accommodating different drive types or transitioning gradually from SATA to SAS drives.

  4. Reliability and Redundancy: SAS incorporates features such as error detection, error correction, and comprehensive error reporting capabilities. It also supports various RAID configurations, providing data protection and redundancy options to mitigate the risk of data loss in the event of drive failures.

  5. Enterprise-grade Features: SAS was primarily designed for enterprise environments demanding high-performance storage solutions. It encompasses advanced features like multipath I/O (Input/Output), which establishes redundant paths between the host and storage devices, enhancing system reliability and availability.


In summary, the advent of SAS interface technology brought significant improvements in speed, scalability, reliability, and compatibility, making it a pivotal advancement in server storage technology.

What does it mean if a drive has a Data Transfer Rate of 12G?

A 12G Data Transfer Rate, in the context of server hard drives, refers to a data transfer rate of 12 gigabits per second (Gbps) between the hard drive and the rest of the computer system. This transfer rate measures how quickly data can be read from or written to the hard drive. It's an important metric because it directly impacts the overall performance and responsiveness of the server, especially in scenarios where large amounts of data need to be processed quickly.


This feature was introduced as part of the Serial Attached SCSI (SAS) interface standard. SAS is a technology used to connect storage devices, like hard drives and SSDs, to servers and other computing systems. The 12G Data Transfer Rate was officially released in early 2013 when the SAS 12Gb/s standard was ratified.


The advancement to a 12G data transfer rate was important for several reasons:


  1. Increased Speed: The higher data transfer rate significantly improved the speed at which data could be read from and written to the hard drives. This was particularly important for server environments where data-intensive applications and large datasets are common.

  2. Better Performance: Servers often handle demanding workloads, such as databases, virtualization, and data analytics. The faster data transfer rate allowed these workloads to be processed more quickly and efficiently, leading to better overall server performance.

  3. Reduced Latency: Lower latency means that data requests can be fulfilled more rapidly, reducing the time it takes for applications to access necessary information. This is crucial for tasks that require real-time processing or quick response times.

  4. Scalability: With faster data transfer rates, servers could handle more concurrent requests and scale to accommodate growing workloads and users.

  5. Support for SSDs: Solid State Drives (SSDs) benefit greatly from high data transfer rates due to their inherently fast access times. The 12G Data Transfer Rate made it more practical to use SSDs in server environments, boosting performance even further.

  6. Future-Proofing: The technology landscape evolves rapidly, and by increasing the data transfer rate, the SAS standard was better positioned to handle the growing demands of data processing and storage in the years to come.


Overall, the release of the 12G Data Transfer Rate as part of the SAS 12Gb/s standard was a significant advancement in server technology. It enabled faster, more efficient data processing, improved server performance, and better support for emerging storage technologies like SSDs.

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PROMISE
Even with our extensive testing procedures, equipment does fail from time to time beyond our control due to shipping or various reasons. Boost Hardware offers a 1 year hardware warranty, replacing any faulty or damaged equipment within the next business day. The RMA process we like to keep VERY simple, so there is no paperwork to fill out! :) We will provide a return label for any parts that you need to ship back on us. That’s it!!

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