Lenovo 4XB7A14684 120TB SAS 12G 7.2K 3.5\

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Lenovo 4XB7A14684 120TB SAS 12G 7.2K 3.5" LFF Hot Swap HDD

  • Part Number : 4XB7A14684
  • Brand : LENOVO

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LENOVO 4XB7A14684 Manufacturer
LENOVO 4XB7A14684 Capacity
LENOVO 4XB7A14684 Spindle Speed
Spindle Speed
LENOVO 4XB7A14684 Interface
LENOVO 4XB7A14684 Data Transfer Rate
Data Transfer Rate

Full LENOVO 4XB7A14684 Specifications

Brand Lenovo
Capacity 120TB
Hot-Swappable Yes
Spindle Speed 7.2K
Interface Type SAS
Data Transfer Rate 12G
Cache 128MB

LENOVO 4XB7A14684 Frequently Asked Questions

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 drive is hot-swappable?

Hot Swap, also known as hot swapping or hot plugging, refers to the ability to replace or add components in a computer system without shutting down or interrupting the operation of the system. In the context of server hard drives, hot swapping allows you to remove or insert hard drives while the server is running and operational, without causing any downtime or disruption to the services the server provides.

This feature was introduced to improve system availability, reliability, and ease of maintenance. Before hot swapping became common, adding or replacing components in a running system required shutting down the system, which could result in service interruptions and downtime. With hot swap capabilities, server administrators can perform maintenance tasks such as replacing a failed hard drive or adding additional storage capacity without affecting the overall system operation. This is particularly important in scenarios where uptime and continuous service availability are critical, such as in data centers, enterprise environments, and high-performance computing systems.

The concept of hot swapping dates back to the early days of computing, but it became more widely implemented in the late 1990s and early 2000s as server hardware and storage technologies evolved. The specific release dates of hot swap-capable hardware may vary depending on manufacturers and models, but it became a standard feature in many enterprise-grade servers and storage systems during this time period.

In addition to hard drives, hot swapping has been applied to various components, including power supplies, cooling fans, and network interface cards, among others. The ability to replace and upgrade components without downtime has contributed significantly to improved system uptime, reduced maintenance costs, and enhanced overall system reliability.

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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