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Innowacyjne rozwiązania pamięci masowych NetApp dla nowoczesnych technologii informacyjnych

Błaszkiewicz B., Błaszkiewicz Z.

Inżynieria Rolnicza

2010

R. 14, nr 7

23-28

W pracy przedstawiono nowoczesne pamięci masowe NetApp poprzez krótką prezentację ich cech sprzętowych oraz oprogramowania zarządzającego, niezbędnego dla efektywnego zawiadywania przechowywanymi danymi. Zaprezentowano zagadnienia najnowocześniejszych rozwiązań sprzętowych, konsolidacji i administracji danych oraz ochrony przed ich utratą. Poruszono również kwestię oprogramowania systemowego i jego możliwości współpracy z nowoczesnymi technologiami informacyjnymi, efektem czego jest umiejętność sprostania zróżnicowanym wymaganiom odbiorców i użytkowników.

The paper presents modern NetApp storage systems through a brief description of their features hardware and software management, necessary for effective governing of stored data. This document presents the issues of cutting-edge hardware, consolidation and administration of data and protection from loss. It also issues system software and its capabilities in advanced information technologies, the effect of which is the ability to meet the diversified demands of customers and users.

Effect of plasma nitrided layers on low-alloy steel on its hydrogen degradation

Zieliński A., Ćwiek J., Błaszkiewicz B.

Journal of Achievements in Materials and Manufacturing Engineering

2006

Vol. 17, nr 1-2

213--216

Purpose: Purpose of this paper is evaluation of susceptibility to hydrogen degradation of structural low-alloy steel, plasma nitrided in the atmosphere with various contents of N2 and H2. Design/methodology/approach: Susceptibility of 34CrAlNi7-10 steel and samples with various plasma nitrided layers have been evaluated under monotonically increasing load in 0.005 M H2SO4 solution. Slow-strain rate tensile test (SSRT) test was carried out under cathodic polarisation. Elongation, reduction in area, fracture energy and tensile strength were chosen as measures of susceptibility to hydrogen embrittlement. Fracture modes of failed samples were examined with the use of scanning electron microscope (SEM). Findings: All tested samples revealed susceptibility to hydrogen degradation under hydrogenation. Samples with nitrided layer have lower lost of reduction in are than base metal samples. The nitrided layer established in standard atmosphere 30% H2 and 70% N2 has the highest resistance to hydrogen degradation. Research limitations/implications: Further research should be taken to reveal the exact mechanism of increased plasticity of nitided layer with absorbed hydrogen. Practical implications: Plasma nitriding may prevent hydrogen charging of machines and vehicles parts in hydrogen generating environments, and thus decreasing susceptibility to hydrogen embrittlement. Originality/value: Under the increasing load and hydrogen generating environments plasma nitrided layers are effective barriers to hydrogen entry into a bulk of steel, and additionally increased plasticity of nitrided layers with absorbed hydrogen was observed.