Reading Time-approximately: 3 minutesA hybrid hard drive (HHD), sometimes known as a solid-state hybrid drive (SSHD), is a mass storage device that combines a conventional hard disk drive (HDD) and a NAND flash module. An HHD blends the capacity, cost and performance of physical disk storage with the accelerated performance of flash. By Garry Kranz Data that is frequently written to or retrieved from storage is served
Reading Time-approximately: 2 minutesIn computing, uptime is a measure of how long a computer or service is on and available. Downtime is the measure of how long it is not available. Services measure uptime as a percentage of total time. By Gavin Wright What is uptime? Uptime tells users how long a computer or service has been available. Historically, uptime was mainly a measure
Reading Time-approximately: 2 minutesA motherboard tattoo is a colloquial term once used to denote an ID code that is written in the basic input/output system (BIOS) of a computer to uniquely identify the computer. By Gavin Wright This ID code is used to ensure that system restore, or diagnostic CDs will only work with the computer they come with. It is set by
Reading Time-approximately: 3 minutesFCAPS (fault, configuration, accounting, performance and security) is a network management framework created by the International Organization for Standardization (ISO). The primary objective of this network management model is to better understand the major functions of network management systems. By Andrew Zola Introduced in the early 1980s, the goal was to move away from a reactive form of network management to a
Reading Time-approximately: 2 minutesA charge-coupled device (CCD) is a light-sensitive integrated circuit that captures images by converting photons to electrons. A CCD sensor breaks the image elements into pixels. Each pixel is converted into an electrical charge whose intensity is related to the intensity of light captured by that pixel. By Robert Sheldon For many years, CCDs were the sensors of choice in a wide range of devices, but they’re steadily
Reading Time-approximately: 5 minutesOrganizations in every industry can be targets of cybercrime for profit. Get expert advice on ransomware prevention, detection and recovery in our comprehensive guide. By Sandra Gittlen When it comes to security challenges, businesses of all sizes are alarmed by the abundance and gravity of ransomware attacks. Cybercriminals have targeted every industry with specialized malware, collecting untold amounts in ransom.
Reading Time-approximately: < 1 minuteA virtual tape library (VTL) is a storage system consisting of hard disk drives (HDDs) that looks and acts like a physical tape library. By Sarah Wilson VTLs are typically used for backup and data archiving purposes. The array of disks is presented to the backup software as tape. Data is written sequentially, just as it would be as if it were being written to rotating tape, but can be written and
Reading Time-approximately: 5 minutesVRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display. VRAM’s purpose is to ensure the even and smooth execution of graphics display. By Alexander S. Gillis, Wesley Chai and Linda Rosencrance VRAM is most important in applications that display complex image textures or render polygon-based three-dimensional (3D) structures. People
Reading Time-approximately: 2 minutesThe use of white space is what separates camel case and snake case. Camel case has none, while snake case uses underscores. Let’s review some examples to make this clear. By Cameron McKenzie Camel case and snake case stand at opposite ends of the variable naming convention spectrum. When multiple words are used to form a variable, camel case joins
Reading Time-approximately: 6 minutesA managed service provider (MSP) is a third-party company that remotely manages a customer’s information technology (IT) infrastructure and end-user systems. By Alexander S. Gillis and John Moore Small and medium-sized businesses (SMBs), nonprofits and government agencies hire MSPs to perform a defined set of day-to-day management services. These services may include network and infrastructure management, security and monitoring. MSPs
What is COVID-19?
On 31 December 2019, the World Health Organization (WHO) reported a cluster of pneumonia cases in Wuhan City, China. ‘Severe Acute Respiratory Syndrome Coronavirus 2’ (SARS-CoV-2) was confirmed as the causative agent of what we now know as ‘Coronavirus Disease 2019’ (COVID-19). Since then, the virus has spread to more than 100 countries, including South Africa.
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