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Differentiated according to the size and arrangement, there are many kind of Servers in Data Centers. Blade Servers are one of the most famous servers. They are designed in such a manner that they acquire minimum space. Going against other servers which need heavy parts like power cords and network cords, blade servers are shed with any thing unnecessary and consist of only important parts. Cooling, network and power cords are interconnected in a Blade Enclosure. Blade Server are good at normal and Cloud hosting. However Blade servers are hot swappable if you put more pressure on blade server they will start working in diverse workload. Minimum possible size for any standard sever-rack configuration is 1RU. Other servers are restricted to 42U size i.e. 42 components, whereas blade servers don’t have any such restrictions. - Memory for reading data and input commands, Processor in order to control the data, Data storage program are the only requirements for the Blade Servers.

Most of the unwanted equipments are either enclosed in the Blade Server enclosure or they are virtualized using iSCSI or remote console over IP. In many Blade Servers unwanted parts are completely removed. Therefore Blade Server becomes considerably small and cheaper. Most of the non-core computing services are performed by the enclosure of the blade servers. If you look at the non-blade server their requirements will look vast and useless. A dedicated UPS is the only source of power in most of the Blade server configuration, which supply DC to multiple enclosures. By applying a dedicated UPS system a number of UPS can be reduced, which otherwise required for flexible power supply. https://www.hosting-linux.org/2018/08/11/compare-the-cheapest-shared-hosting-plans-of-the-most-popular-hosting-companies/ Because of the popularity of the Blade Server, demand for the rack mounted servers increased considerably. Blade Servers are good option to cut cost, since they require less power and also saves a lot of space. Most of the new age Data Centers are updating their servers to Blade Servers.

Shamim Ahmed writes about Data Center India, Fully Managed Data Center, and Colocation Services India

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### Graphical tools

 OptiLayer provides various tools to present graphically your results.  On the Evaluation window you can see any evaluated spectral characteristics. All evaluated spectral characteristics can be plotted. You can easily adjust types of plots, axis, scales, etc. The plots can be adjusted through standard chart settings: Along with  the main Evaluation window, you can open multiple evaluation windows and plot the same or other spectral characteristics related to the same design at different angles of incidence, polarization, spectral ranges. Example: main evaluation window shows transmittance of a bandpass filter and target values (violet crosses) For example, you may need to plot other spectral characteristics in order to better present features in the most important spectral ranges. You may need to see what happens if the angle of incidence deviates from that one that what used in the design process.  Example: second evaluation window presents transmittance of the same bandpass filter in one of the high-transmittance ranges and in a larger scale. Spectral behavior at small incidence angles ican be also interesting: You can compare spectral characteristics of different designs at one plot or combine multiple spectral characteristics at one plot. The option and its settings are available through: Analysis --> Plot Engine: Example: comparison of transmittance data of three different designs: Using the powerful Analysis --> Plot Engine option you can plot dependencies of different spectral characteristics on various coordinates, namely: Wavelength, Angle of incidence, Refractive index of the ambient medium, Refractive index/Extinction coefficient of the substrate, Coating coordinate, Thickness of any layer (in this case additional setting - layer number - appears) Refractive index/Extinction coefficient of any layer (in this case additional setting - layer number - appears) Refractive index/Extinction coefficient of any material (in this case additional setting - layer number - appears) Example: Settings and dependence of the coating transmittance (averages polarization, wavelength 1500 nm) on the refractive index of the last 58-th layer. You can also plot dependencies of color coordinates in any color coordinate systems on various parameters. This powerful option can be applied in a combination with the Variator and provide all visual analysis possibilities of optical coatings designs. You can compare dependencies related to different designs or combine dependencies calculated for different spectral or angular ranges. You can save the plots as *.vtc2 files and combine them using stand-alone Plot Engine module. You can export the numerical data of the plots using: Right mouse button --> Chart --> Export --> Data --> Selection from Excel, text, HTML, etc. formats --> Save You can modify axis, panels,  etc. using standard Chart tools. Example: Settings and dependence of the color coordinates of the reflected light of a coating (averages polarization, chromaticities $$x$$ and $$y$$) on the extinction coefficient of the second (metal-dielectric) layer. Through Analysis --> Plot Engine option you can plot characteristics as functions of one or two parameters, according to the choice Y = f(X) or Z = f (X,Y). The list of arguments includes Wavelength, the Angle of incidence, Re(n) Ambient medium, Re(n) substrate, Im(n) substrate, coating coordinate, layer thickness, and Re(n) layer. The same set of arguments is provided for Y argument if you select a Z = f (X,Y) mode. In the same frame the range for the argument (From... To), the number of points (Points) and the argument increment between the points (Step) are specified. Example: 3D plot - dependence of the filter reflectance on the wavelength and on the incidence angle: All plots are ROTATABLE! Chart Windows (windows having plots and diagrams) has additional export formats: *.vtc2 files (this format is used by the powerful OptiLayer Plot Engine tool) *.pdf files (these files can be opened with Adobe Acrobat tools, http://www.adobe.com) *.eps PostScript files (encapsulated postscript version, these files are suitable for many printers) *.svg files (Scalable Vector Graphics, http://www.w3.org/Graphics/SVG) *.vml files (Vector Markup Language), http://www.w3.org/TR/NOTE-VML *.xaml files (Extensible Application Markup Language), defined athttp://en.wikipedia.org/wiki/Extensible_Application_Markup_Language Windows can be saved as: *.bmp files (bitmap graphics format) *.jpg files (JPEG bitmap) *.wmf files (Windows metafiles format) *.pcx files (Paintbrush format) *.gif files (CompuServe bitmap) *.png files (Portable Networks Graphics) *.tiff files (Tagged Image File Format) The Digitize command is accessible from popup menus of Evaluation windows invoked by the right mouse button. When any graphic plot in Evaluation, Refinement, Needle Optimization, Random Optimization and other windows is displayed, this command allows you to read exact numerical (X,Y) values of the plotted characteristics. When the Digitize command is activated, a vertical bar is displayed in the plot window to visually identify the graph point being evaluated, an additional window labeled "Values List" appears on the screen. The values list displays the exact numerical values of all spectral characteristics that are presented in the window. Memorize submenu allows to store any plot for further comparison with another plot or plots. The submenu is available through Right mouse button --> Memorize plots

### Reports in OptiRE and OptiChar

 In the Data Fitting Window, OptiRE/OptiChar compare the measurement data and corresponding model spectral characteristics: OptiRE/OptiChar allow previewing the text with the information about the fitting of measurement data by theoretical spectral characteristics. This text can be saved or exported to Excel by one mouse click: OptiRE present thickness errors determined in the course of post-production characterization as a diagram or as different tables of values: OptiRE presents the current systematic and random errors in layer thicknesses in the text form (Thickness Errors Report): OptiRE plots initial, corrected refractive indices, drifted refractive indices or/and Layer Inhomogeneities if Refractive Index Correction option was applied or/and Index Drifts (Offsets) and Layer Inhomogeneities were determined in the course of the post-production characterization: The corresponding reports: Refractive indices Report, Index Drift Report and Inhomgeneities Report allow previewing the numerical values in the text form: OptiChar plots fitting of the experimental data by model data: Determined refractive indices, extinction coefficients, thickness dependence of the refractive index are shown in corresponding windows: OptiChar collects and show all layer information obtained in the course of the layer characterization in the Layer Report: Layer model(s) applied Determined layer thicknesses Model parameters Degree of inhomogeneity Surface overlayer Refractive index and extinction coefficient in a tabular form Discrepancy function value A similar report (Substrate Report) can be created if you characterized a substrate.

### Easy to start

OptiLayer provides user-friendly interface and a variety of examples allowing even a beginner to effectively start to design and characterize optical coatings.        Read more...

### Docs / Support

Comprehensive manual in PDF format and e-mail support help you at each step of your work with OptiLayer.