Reading Time-approximately: 4 minutesBlock storage is an approach to data storage in which each storage volume acts as an individual hard drive that is configured by the storage administrator. In the block storage model, data is saved to the storage media in fixed-sized chunks called blocks. Each block is associated with a unique address, and the address is the only metadata assigned to each block.
Reading Time-approximately: 6 minutesHackers know better than to directly attack a well-defended target; learn how they use island hopping attack strategies to elude defenders — and how best to repel them. By Peter Loshin Threat actors targeting large organizations — even ones with effective cybersecurity defenses — will go to any length to get in. Even when the targeted organization does a good
Reading Time-approximately: 6 minutesStorage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage device — or pool of available storage capacity — that is managed from a central console. The technology relies on software to identify available storage capacity from physical devices and to then aggregate that capacity as a pool of storage
Reading Time-approximately: < 1 minuteJBOD (which stands for “just a bunch of disks”) generally refers to a collection of hard disks that have not been configured to act as a redundant array of independent disks (RAID) array. By Brien Posey RAID arrays write data across multiple disks as a way of storing data redundantly (to achieve fault tolerance) or to stripe data across multiple disks to get better performance than any one disk could
Reading Time-approximately: 3 minutesA bare-metal hypervisor, also known as a Type 1 hypervisor, is virtualization software that has been installed directly onto the computing hardware. By Brien Pose and Kim Hefner This type of hypervisor controls not only the hardware, but one or more guest operating systems (OSes). In comparison, a hosted hypervisor, or Type 2 hypervisor, runs within the host OS, so the underlying hardware is managed by the host
Reading Time-approximately: 3 minutesCache memory and random access memory both place data closer to the processor to reduce latency in response times. Learn why cache memory can be the faster option. By Jon Toigo and Stacey Peterson One response to the difference between RAM and cache memory question might be one of a real estate agent’s old favorites: “Location, location, location!” Cache is usually part
Reading Time-approximately: 3 minutesTLC flash (triple-level cell flash) is a type of NAND flash memory that stores three bits of data per cell. TLC is also known as MLC-3, 3-bit MLC and X3. By Carol Sliwa and Todd Erickson Common use cases for TLC flash include enterprise- and consumer-grade solid-state drives (SSDs), storage cards in digital cameras and mobile phones, and USB drives. TLC flash
Reading Time-approximately: 3 minutesMulti-level cell (MLC) flash is a type of NAND flash memory that can store more than 1 bit per cell. NAND flash is a form of nonvolatile storage memory, which allows it to retain data without being attached to a power source. By Garry Kranz What’s the difference between enterprise MLC and consumer MLC? Multi-level cell flash is a midpoint between single-level cell (SLC)
Reading Time-approximately: 7 minutesNVMe over Fabrics, also known as NVMe-oF and non-volatile memory express over fabrics, is a protocol specification designed to connect hosts to storage across a network fabric using the NVMe protocol. By Alexander S. Gillis The protocol is designed to enable data transfers between a host computer and a target solid-state storage device or system over a network — accomplished through a NVMe message-based
Reading Time-approximately: 10 minutesA service-level agreement (SLA) is a contract between a service provider and its customers that documents what services the provider will furnish and defines the service standards the provider is obligated to meet. ByLinda Rosencrance, Stanley Louissaint and Kate Brush A service-level commitment (SLC) is a broader and more generalized form of an SLA. The two differ because an SLA
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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