Samari IT Solution Pvt. Ltd. - Uniview Authorized National Distributor in Nepal

Hard Disk Drive

Hard Disk Drive

07 Mar

Hard Disk Drive (HDD)

A hard disk drive (HDD) is an internal or external computer component that stores data, such as the operating system, applications, and user files. HDDs are “non-volatile” storage devices, meaning they retain stored data even when power isn't being supplied. Currently, the highest capacity HDD is 20 TB. However, an HDD has less space than advertised, as the operating system, file system structures, and some data redundancy procedures use a portion of that space.

How does it work?

A hard disk drive (HDD) stores data on magnetic platters that spin at high speeds. Read/write heads on movable arms read and write data by magnetizing specific areas on the platters. The controller manages these processes, and a spindle motor spins the platters. HDDs are a common storage technology, but solid-state drives (SSDs) are becoming more popular due to faster speeds and greater durability.

Different types of hard disk interfaces

An internal hard disk is connected to a computer through a data cable that relies on IDE or SATA technology to the motherboard and power supply.

1. PATA hard drives:

PATA hard drives were some of the first in the market. They used a Parallel interface standard, introduced by Western Digital in 1986. IDE and EIDE drives are examples. They transferred data up to 133MB/s and could connect up to 2 devices. Like other hard drives, they stored data using magnetism and had mechanical moving parts.

2. SATA hard drives:

SATA hard drives came after PATA. The main difference was the interface; they still connected the same way. SATA used a serial method, allowing faster data transfer than PATA. SATA needed only 250mV for operation, while PATA required around 5V.

Key aspects of a hard disk drive (HDD)

Storage: Hard disks are primary storage devices used to store and retrieve digital data on computers. They provide large capacities, ranging from gigabytes (GB) to terabytes (TB) of storage space.

Magnetic Data Storage: Data is stored on magnetic platters using read/write heads. These platters are typically made of glass or aluminum and coated with a thin layer of magnetic material.

Platters: Circular, flat disks where data is physically stored. Multiple platters can be stacked on a spindle within a hard disk.

Magnetic Data Storage: Data is stored on magnetic platters using read/write heads. These platters are typically made of glass or aluminum and coated with a thin layer of magnetic material.

Read/Write Heads: These heads are responsible for reading and writing data on the platters. They are mounted on an actuator arm that moves them across the spinning platters.

Interface: Connects the hard disk to the computer's motherboard. Common interfaces include SATA (Serial ATA) and older versions like PATA (Parallel ATA).

Spindle Motor: The motor that spins the platters at high speeds, typically ranging from 5,400 to 15,000 revolutions per minute (RPM).

Data Transfer Speed: The speed at which data can be read from or written to the hard disk, measured in megabytes per second (MB/s) or gigabytes per second (GB/s).

More Blogs

Navigating New View – UNV Navigator PTZ Dome Camera
Navigating New View – UNV Navigator PTZ Dome Camera

Uniview, the world’s leading video surveillance manufacturer, recently launched new PTZ dome camerasIPC6322LR-X22-C and IPC6322SR-X22P-C, which are named as Navigator.

5 Reasons To Switch To Wireless Earbuds
5 Reasons To Switch To Wireless Earbuds

Let’s face it, the 1990s are long gone and wireless is the future. With technology evolving every single day, quality headphones today are all wireless.

S2 Series NVR – the Most Wanted NVR
S2 Series NVR – the Most Wanted NVR

UNV S2 Series NVR is the latest in Uniview’s Easy Series featuring extremely cost-effective performance and user-friendly experience.

7 Essential Mobile Accessories For College Students
7 Essential Mobile Accessories For College Students

College is the perfect time for students to start a new chapter of their lives and set new goals. This is also the time when out of various gadgets like tablets, laptops, etc.

5 Times When Wired Earphones Proved Better Than Wireless
5 Times When Wired Earphones Proved Better Than Wireless

Choosing between wired and wireless has more to do with how the user intends to use them most of the time. Wireless earbuds are ideal for active lifestyles as they favor secure fits and durable constructions

Uniview's Micro SD TF Cards: Edge Surveillance Storage Solutions in Nepal through Samari IT Solution
Uniview's Micro SD TF Cards: Edge Surveillance Storage Solutions in Nepal through Samari IT Solution

Discover the future of surveillance storage with Uniview's Micro SD TF card product line, comprising the UNV Blue, Purple, and Red Series. These cutting-edge storage solutions are engineered to meet the diverse needs of surveillance systems. From the fusion of performance and reliability in the Blue Series to the elevated capacities of the Purple Series and the unwavering endurance of the Red Series, these cards redefine the benchmarks of surveillance technology. Samari IT Solutions, the exclusive distributor of Uniview products in Nepal, brings these revolutionary storage solutions to the Himalayan nation, empowering professionals and reshaping the landscape of surveillance technology.

UNV UAC-B112-F28(40): A 2MP HD Fixed IR Mini Bullet Analog Camera Excellence in Surveillance for Nepal
UNV UAC-B112-F28(40): A 2MP HD Fixed IR Mini Bullet Analog Camera Excellence in Surveillance for Nepal

Explore our comprehensive review of the UNV UAC-B112-F28(40) camera, a cutting-edge 2MP HD Fixed IR Mini Bullet Analog Camera designed for exceptional image quality and adaptability. Discover its advanced features, customizable video settings, and robust design that caters to both residential and commercial security needs. Learn about its certifications, including CB, CE, and FCC, ensuring safety, quality, and regulatory compliance. Elevate your security setup with this versatile camera series.

Basic Information About CCTV
Basic Information About CCTV

CCTV, which stands for Closed-Circuit Television, is a video surveillance system that transmits signals over a private network rather than a public broadcast. This means that the footage captured by CCTV cameras is only accessible to authorized viewers, unlike broadcast television that anyone with a TV can tune into.

IP CCTV Camera
IP CCTV Camera

 IP CCTV, or Internet Protocol Closed-Circuit Television, represents a modern approach to video surveillance utilizing digital technology and network connectivity. Unlike traditional analog CCTV systems, IP cameras capture and transmit video data as digital packets using the internet protocol (IP). This enables several advantages and advancements over its analog counterpart.

Analog CCTV Camera
Analog CCTV Camera

Analog CCTV, the original video surveillance technology has been around for decades and paved the way for modern security systems. While surpassed by newer IP technology in some aspects, it still holds its own in specific applications due to its simplicity and affordability.

Difference Between Analog and IP CCTV Camera
Difference Between Analog and IP CCTV Camera

Analog CCTV remains a budget-friendly option for basic needs, but its limitations become apparent when scalability, high resolution, and advanced features are desired. IP CCTV offers superior video quality, flexibility, and advanced functionalities, but requires a more complex setup and potentially higher initial costs.

Brief Description on NVR and XVR
Brief Description on NVR and XVR

An NVR is a specialized computer system designed to record video footage captured by IP security cameras. An XVR is the ultimate security chameleon, adapting to your existing camera setup while providing future flexibility.

PoE Switch
PoE Switch

A Power over Ethernet (PoE) switch is a network switch that can deliver electrical power along with data over Ethernet cables. This eliminates the need for separate power supplies for devices like VoIP phones, IP cameras, and wireless access points, simplifying installation and reducing costs.

Video Streams of IP Cameras
Video Streams of IP Cameras

Video streams are like rivers of moving images flowing over the internet. Instead of delivering the entire video file at once, they break it down into smaller chunks sent continuously, allowing you to watch it as it arrives. This makes it possible to view live videos even with limited internet speed. 

Wide Dynamic Range
Wide Dynamic Range

WDR technology plays a vital role in ensuring IP cameras perform effectively in real-world scenarios with diverse lighting conditions. By offering a wider dynamic range, they capture clearer and more informative images and videos, enhancing security, monitoring, and various other applications.

Video Encoding
Video Encoding

Video encoding is the process of taking raw video data and compressing it into a smaller, manageable file while maintaining acceptable visual quality. This is crucial for efficient storage, transmission, and streaming of videos.

Night vision/IR Technology
Night vision/IR Technology

Night vision technology in CCTV cameras, also known as Infrared (IR) technology, allows them to capture clear images and videos even in low-light conditions or complete darkness. This is crucial for security and surveillance applications when natural light might be insufficient. Night vision technology has evolved significantly since its inception, starting from early image intensifiers to more advanced thermal imaging systems.

On-Screen Display
On-Screen Display

On-Screen Display is a valuable tool in the world of CCTV cameras. It's like a hidden control panel accessible directly on the camera's video output, allowing you to adjust and configure various settings without needing additional software or physical controls

White Balance
White Balance

White balance is a crucial setting in photography and videography that ensures objects appearing white are rendered white in your images, regardless of the lighting conditions. It adjusts the overall color temperature of your photos or videos to accurately represent the scene you're capturing.

Uniview Starlight Technology
Uniview Starlight Technology

Uniview Starlight Technology is a proprietary set of features incorporated into some of their IP cameras to enhance low-light performance and deliver clear images even in near-darkness environments. Uniview StarView series cameras redefine starlight technology with outstanding images at super low illumination during the night for both static and moving scenes.

Uniview Colorhunter Technology
Uniview Colorhunter Technology

Uniview Colorhunter Technology offers a significant improvement in video surveillance capabilities for low-light situations, where traditional security cameras often struggle to capture clear and informative images.

Uniview Lighthunter Technology
Uniview Lighthunter Technology

Uniview’s LightHunter Technology is an innovative breakthrough in video surveillance. Its main goal is to provide obvious images in ultra-low light conditions. It operates through a combination of advanced hardware and software features.

CMR and SMR Drives
CMR and SMR Drives

A hard disk drive (HDD) or simply a hard disk, is a non-volatile device that uses magnetic storage to store and retrieve digital data using one or more rapidly rotating platters coated with a magnetic material.

Video Conference Camera
Video Conference Camera

Uniarch video conference cameras are a good option for businesses and individuals who are looking for a high-quality, affordable video conferencing solution.

Surveillance System CCTV Glossary
Surveillance System CCTV Glossary

BNC Connector: BNC is a connector for coaxial cable that is most commonly used for CCTV installations. BLC (Back Light Compensation): This is a feature of security cameras that automatically adjusts the image to compensate for bright light to give more detail on the darker areas of the image. For example, use is to focus on the detail of the face of a person that has the sunlight shining from behind. Brightness: This changes how light the image appears to be. Its value is different in darkness from that in daylight. For example, car headlights' lights appear brighter at night.

High-Defination Multimedia Interface
High-Defination Multimedia Interface

HDMI stands for High-Definition Multimedia Interface. It is a digital interface that transmits uncompressed video data and compressed or uncompressed digital audio data from a source device, such as a display controller to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for analog video standards.

Smart Wireless Cube Camera
Smart Wireless Cube Camera

C1L-2WN-G is a smart wireless cube camera made by Uniview, a security camera manufacturer. It's a popular indoor security choice as it offers various features.

IPC IR light constantly on
IPC IR light constantly on

we must check the camera's cable connection and power source. Normally, a problem comes from the wire trying to break toward the middle but not completely broken. The RJ45 jack is rusted(due to dew and water).  The PoE and the power supply may not work properly. For this, we have to change the cable or we can check by removing the camera and connecting it to a shorter wire. We can also test it by changing the switch's port and the power adapter.

Owlview Series IP Camera from Uniview Powered By Wise-ISP Technology
Owlview Series IP Camera from Uniview Powered By Wise-ISP Technology

Explore Our Categories

WD Purple

Uniview
Uniview

Uniarch
Uniarch