Related topics: power consumption · flash memory

World's densest, totally silent solid state drive

Fast disappearing from data centers are power-hungry spinning hard disk drives that hum, buzz, run warm (or even hot), require fans and expensive cooling systems, and can crash unexpectedly.

Seagate demonstrates 10GB/s SSD flash drive

Seagate Technology today unveiled a production-ready unit of its fastest single solid-state drive (SSD) demonstrated to date, with throughput performance of 10 gigabytes per second (GB/s). The early unit meets Open Compute ...

The demand for storage devices in a connected world of data

The advent of cloud computing has given rise to trends—such as the consumerization of IT, big data and enterprise mobility—that have created increasingly connected data ecosystems, and this is driving demand for digital ...

DragonFly NVDRIVE PCle SSD cache accelerator unveiled

Marvell today announced the availability of the Marvell DragonFly NVDRIVE, a turnkey enterprise-class PCIe SSD caching solution with built-in SSD modules that extends the company's award-winning DragonFly NVCACHE and NVRAM ...

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DNA

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms and some viruses. The main role of DNA molecules is the long-term storage of information. DNA is often compared to a set of blueprints or a recipe, or a code, since it contains the instructions needed to construct other components of cells, such as proteins and RNA molecules. The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information.

Chemically, DNA consists of two long polymers of simple units called nucleotides, with backbones made of sugars and phosphate groups joined by ester bonds. These two strands run in opposite directions to each other and are therefore anti-parallel. Attached to each sugar is one of four types of molecules called bases. It is the sequence of these four bases along the backbone that encodes information. This information is read using the genetic code, which specifies the sequence of the amino acids within proteins. The code is read by copying stretches of DNA into the related nucleic acid RNA, in a process called transcription.

Within cells, DNA is organized into X-shaped structures called chromosomes. These chromosomes are duplicated before cells divide, in a process called DNA replication. Eukaryotic organisms (animals, plants, fungi, and protists) store most of their DNA inside the cell nucleus and some of their DNA in the mitochondria (animals and plants) and chloroplasts (plants only). Prokaryotes (bacteria and archaea) however, store their DNA in the cell's cytoplasm. Within the chromosomes, chromatin proteins such as histones compact and organize DNA. These compact structures guide the interactions between DNA and other proteins, helping control which parts of the DNA are transcribed.

This text uses material from Wikipedia, licensed under CC BY-SA