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15000 RPM Enterprise Hard Drives from HGST

07.03.2014

HGST (formerly Hitachi Global Storage Technologies, now a subsidiary of Western Digital) has launched a new family of high-capacity 2,5-inch 15k rpm enterprise hard drives, the Ultrastar C15K600. The innovations provide high performance and capacity in a small size and low operating temperature, thus providing increased information density while reducing support costs and total cost of ownership. This was reported to CNews in HGST.

The high speed of hard drives, according to HGST, was achieved, among other things, thanks to media caching technology that uses algorithmic processing of input data to optimize the recording process, which is much faster than non-volatile caching on NAND or flash memory. As a result, the speed of access to a random sector is 2 times higher than 2,5-inch competitors and 2,5 times faster than 3,5-inch ones, the spindle speed of which is 15 thousand rpm. What's more, the Ultrastar C15K600 is equipped with a fast 12Gb/s SAS interface and a fast 128MB cache to ensure stable system performance, according to the company.

The Ultrastar C15K600 has twice the capacity of today's 2,5" 15K RPM hard drives and matches that of 3,5" 15K RPM hard drives. "The 600GB capacity makes it easy for any business to migrate from 3,5" drives to 2,5" HDD platforms and experience the difference in performance and power consumption," HGST said. With a 2,5-inch Small Form Factor (SFF) and Advanced Power Management technology, the C15K600 delivers up to 55% lower power consumption during operation and up to 54% during idle compared to the latest 3,5-inch drives, according to the company. with 15 thousand rpm from HGST.

At the same time, Ultrastar C15K600 SAS drives offer a wide range of encryption and security options, such as Instant Secure Erase (ISE) technology and SSC-compatible Self-Encrypting Drives (SED) technology from the Trusted Computing Group (TCG), certified according to FIPS (Federal Information Processing Standard) 140-2, ur. 2.

The Ultrastar C15K600 has an MTBF of 2 million hours and an annual failure rate of less than 0,44%. With many customers running both modern and legacy systems, the Ultrastar C15K600 line of drives will be available in both 4K Advanced, 512e and 512n formats, the company said.

In addition to the Ultrastar C15K600 line, HGST announced Ultrastar Enterprise SSDs with 12Gb/s SAS, also certified to FIPS 140-2, ur. 2. As explained by HGST, these drives have been designed for the most demanding applications such as high-speed trading, online banking, cloud computing, and big data analysis. FIPS 140-2 is an IT security standard used by government organizations and regulated industries such as healthcare or financial institutions that store and share sensitive but not classified information.

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Viruses are 10 times stronger in the morning than in the evening 24.08.2016

Circadian rhythms - fluctuations in the intensity of processes occurring in the body during the day - often affect our susceptibility to various diseases. It is known, for example, that the violation of these rhythms (disturbed day regimen, night shift work, change of time zones) lead to chronic diseases. Until recently, scientists did not know what is the relationship between the time of day and the body's ability to resist bacteria and viruses.

To shed light on this question, scientists from the University of Cambridge conducted several experiments on mice and individual cells. It turned out that viral diseases (experiments were conducted with influenza and herpes viruses) feel as much as 10 times better in the infected body in the morning than in the evening. Violation of circadian rhythms leads to a decrease in resistance to viruses.

Viruses penetrate the cells of an infected organism and are integrated into the processes taking place in them. The physiology of the cell and many processes in it are subject to daily fluctuations. That is why, as scientists have found, the time of day affects whether the virus will be able to cope with the cell or not.

About 10% of all genes of the organism are somehow involved in the daily regulation of the intensity of internal processes. For observation, the scientists chose the Bmal1 gene, which is present in both mice and humans. This gene is much less active during the morning hours, which gives the viruses a big advantage.

One of the authors of the study, Akilesh Reddy (Akhilesh Reddy) noted: “The virus needs all the necessary systems to be alerted, otherwise it will never be able to integrate into the cell’s metabolism. However, even a weak infection in the morning has a chance to become successful and infect the entire organism."

Although the researchers conducted experiments with only two types of viruses, their fundamental differences from each other suggest that the law "a virus is 10 times more dangerous in the morning than in the evening" works for other viruses as well.

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