Developers Club geek daily blog

Test automation of the website: Pytest, Allure, Selenium + several confidential ingredients

1 year, 4 months ago
Already it is more than a year at here. Within rebranding also the website www.acronis.com was updated. For creation of the website we selected CMS Drupal. The website turned out cool outside and difficult inside: 28 locales (!), sympathetic web-design, roundabouts, wizards, pop-up windows … as a result were necessary to involve a set of different modules of a drupal, some of them to customize and write own. During the work of such dynamic, complex system errors are inevitable. The command of control and ensuring quality of the website is engaged in their prevention and identification. In this article we want to share the successful recipe of test automation of our website.


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EMC ViPR 2.1: data management of "the third platform"

1 year, 4 months ago


ViPR – an element of the program defined data processing center


ViPR implements for a data storage segment approximately the same that VMware made for a segment of servers – creates a possibility of abstraction of resources, forming of pools and implementation of automation for infrastructure. By means of VMware API interfaces the storage pools created in EMC ViPR are presented in VMware vSphere in the form of a simple array. Besides, the ViPR controller provides integration with VMware vStorage API for Storage Awareness (VASA), vCOps, and also with control facilities and orkestration of VMware SDDC, vCloud Automation Center and vCenter Operations Manager. Thus, in ViPR control of storage can be exercised as independent object which is represented per se in virtual environments of Microsoft and OpenStack, and within the program defined VMware data processing center.

Main goal of development of EMC ViPR was simplification and reduction in cost of management of the existing heterogeneous infrastructures of storage, and also creation of a simple data management system and data access in the distributed clustered file systems, for example, based on hadoop-clusters, and also in cloudy environments.

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What expects DPC the industry in the future

1 year, 4 months ago


How the DPC the industry in 10-15 years will look?. Regularly many IT specialists ask the matter and do not miss an opportunity to regularly voice the thoughts concerning the future of server farms.

Poll on the subject "DPC of 2025 — Studying of Opportunities"

"DPCs of 2025 — studying of opportunities" reported to Emerson Network Power in the report results of poll on a subject which concerns the near future of data-centers. More than 820 specialists in the field of DPC from around the world took part in this poll. During poll of respondents asked to share the thoughts of how data-centers will look in 10 years. There is a wish to note that the polled specialists did not predict expansion of scenarios of "the supernatural nature of an origin" (as in anti-Utopia from the cult film trilogy "Matrix" where data-centers received the electric power thanks to the huge fields consisting of "people batteries").

And so …

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Backups happen different. Today I will tell about Acronis Backup Cloud (BaaS)

1 year, 4 months ago
In this article I will step by step describe work of service of backup of Acronis Backup Cloud (earlier known as "Acronis Backup as a Service"), developed by engineers of the Acronis company. I will tell what represents "backups as service" from within and as all this works. I pass directly to the description of work of the service.


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Protection of personal data on N 242-FZ: how to understand also what to do?

1 year, 4 months ago


The subject of information security continues to be actual — recently in Moscow discussed Federal Law No. 242 at the Protection of Personal Data conference or as it call "The law on localization of personal data of Russians in the territory of the Russian Federation". An essence its is as follows: since September, 2015 to the PDN organizations operators, it is necessary to conduct collecting and systematization of personal data (further – PDN) Russians in the territory of the Russian Federation. And the lion share of suppliers of different services — foreigners, or store the servers the abroad, and the Russian users, purchasing services of such suppliers, transfer the data abroad where there is not only their storage, but also systematization. There is a question — as to clients to continue to use services of foreign suppliers, without having violated standards of processing of PDN by the Russian legislation.

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Zotero: optimization of storage and use of scientific literature

1 year, 4 months ago


I will not expatiate on benefits of use of bibliographic managers. Outside 2015. The subject was discussed on Habré more than once.

Here all delights of use of the bibliographic manager on the example of Mendeley are in detail described (this is one of the main competitors of Zotero, comparison later in this article). Here the Citavi system is curiously provided., It seems, everything in it is quite good, but to pay decent money when there are fine free analogs — entertainment on the fan for software. By the way, with all the heart I recommend to read comments to this article — more informative than other opuses. Here the author of the bibliographic manager of SciRef suggests to receive an applet free of charge.

There is a huge great number of different bibliographic managers (see the table in the cellar, a source).

Comparative table of bibliographic managers



Certainly, at such variety silly to speak about one ideal solution. In this article I want to tell you about a solution which I use and which suits me almost completely. Apparently from the name of article, it is Zotero.

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Reefs of backup and recovery of deduplitsirovanny data in the scenario disaster recovery

1 year, 4 months ago


Developing a subject of a backup and recovery on SHD with new architecture, we will consider nuances of work with deduplitsirovanny data in the scenario disaster recovery where SHD with own deduplication are protected, namely as this technology of effective storage can help or prevent to recover data.

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DataTalks #4: Predictive analytics

1 year, 4 months ago
On October 10 the fourth DataTalks took place. This time the predictive analytics became a subject of a meeting, and we would like to share videos of performances with community.

Why predictive analytics?
She allows to predict on the basis of historical data different events in the future, such as behavior of clients or results of the made actions. Thanks to it business can make optimal solutions and consider forecasts about future actions and desires of their clients.

Under a cat you will find records of performances:
  • How to answer the question "What Will Be?": a practical advice / Andrey Yarmola, ​Data Science Team Lead in Wargaming
  • Necessary minimum of tools for creation of the system Recommendations / Alexey Dyomin, Java Server Side Developer in InData Labs
  • What is predictive analytics and to whom it is necessary / Nadezhda Ruchanova, the deputy director of representative office of OOO "SAP SNG", Mikhail Avetisov the leading expert of OOO "SAP SNG" on predictive analytics
  • Creation of the data storage on the basis of a platform Hadoop / Igor Nakhvat in Data Integration Engineer, Wargaming
  • Use of predictive analytics for management of the value of client base / Maxims of Brain Director of CRM in Wargaming

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What the general at honey and data storage systems?

1 year, 4 months ago
On the first of October this year we told about new generation of data storage systems of HP 3PAR StoreServ. Under that post conversation on software testing to the Storage Performance Council standards came. In order that to carry out such tests, time and considerable efforts is necessary. Results of tests of one of systems 3PAR were published on November 4. If briefly, then SHD HPE 3PAR StoreServ 20850 All-Flash Array set a world record in the SPC-2 test. Here it is possible to look at the table of leaders, here – to get acquainted with details of tests.

Paul Heverfild, our colleague from Australia, were admired by results of these tests, he saw in them much more, than a simple set of digits. We share his reflections with you.



Cup of fresh honey, just from a beehive … Yum-yum? Undoubtedly.

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Introduction to Storage Performance Development Kit

1 year, 4 months ago
Data storage systems on the basis of solid-state drives are widely adopted more and more in data processing centers. Storages based on a flash memory of the current generation have powerful benefits from the point of view of performance, electricity consumption and data storage density in racks in comparison with disk storage modules. These benefits will become even more notable at emergence in the market of drives of new generation. The clients implementing solid-state drives of the current generation, such as Intel P3700 NVMe * should cope with a complex problem: as flow capacity is much higher, than at disk storage modules, and delays are much lower, the most part of the general time of transactions is the share of work of the software of storage now.

For the help to OEM-vendors and software providers in integration of such equipment the Intel corporation created a set of drivers and developed complete architecture of storage. This initiative received the name Storage Performance Development Kit (SPDK). SPDK purpose — to emphasize the high performance and performance reached by set of the Intel technologies in the field of networks, calculations and data storage. Intel free of charge provides the complete source code of reference architecture Linux (according to the license Intel). The driver of the NVMe user mode is provided in the form of an open source code to community on the 01.org portal, and the code of other elements of a packet will be provided during 2016.

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