Developers Club geek daily blog

Portal of Technopark: as we did it

2 years, 6 months ago
All hi. This article describes a portal "Technopark": its functions and an opportunity, history of development and the used technical and architectural concepts. Article is written by developers of a portal — students of the Technopark. We hope that experience of development which we impart will be useful to readers.


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We invite to December meetings of IT community in Samara, Omsk, Novosibirsk and Krasnoyarsk

2 years, 6 months ago
As promised in the last post about meetings — new meetings of IT community in Samara, Omsk, Novosibirsk and Krasnoyarsk. This time a subject of meetings — Windows 10. The Windows 10 operating system left about 4 months ago and in anticipation of the next year, it is possible to meet quietly colleagues and to discuss what new appeared in Windows 10 what new scenarios of implementation it supports as it can be managed in corporate and not really to Wednesday how to manage the Windows 10 updates and many other questions which arise at any IT shnika when it learns about new OS.

We invite you to the meetings of IT community in Samara, Omsk, Novosibirsk and Krasnoyarsk organized by IT community and MCP clubs with assistance of community Microsoft Most Valuable Professionals!

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Example of express performance review of SHD by means of the free Mitrend service

2 years, 6 months ago


Studying of a problem with performance and search of solutions are familiar to much not by hearsay. There is a large number of instruments of visualization and parsing of statistics of input-output. Now automation of the intellectual analysis based on Internet services gains steam.

In this post I want to share an example of the analysis of a problem with SHD performance based on one of such services (Mitrend) and I will offer ways of its solution. In my opinion, this example represents the interesting etude which as I think, can be useful to a wide range of IT readers.

So, the customer asked EMC to look at performance unrolled at it in SAN of hybrid storage system VNX5500. The VMware servers on which all turns "in general" are connected to SHD: from infrastructure tasks to file a sphere and the DB servers. Complaints to podvisaniye of the applications unrolled on connected to VNX servers were the cause of carrying out this express assessment.

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AltegroSIM: we upgrade mobile communication of a delivery service

2 years, 6 months ago
Passed nearly a year since we began to have the blog on Habré. During this time it was described several methods of integration of our AltegroSIM, virtual automatic telephone exchanges, CRM and all other, cloudy what is used in business for automation and optimization. For ourselves became opening how significant place cellular communication takes in a communication field of any company and as far as, even the smallest, at first sight, upgrade/optimization, is capable to simplify life of managers, couriers and their chiefs. And business even not in a factor cost on calls, business is more in business processes. Occasionally, correctly built scheme of interaction of mobile and office employees and clients not only reduces the size of the monthly account from the telecom operator, but also influences efficiency of sales in general. Today we will describe a curious case which facilitates life of a classical tandem "a delivery service — the client".


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Practice of reduction of costs for power supply of a data-center

2 years, 6 months ago
Some questions of power saving in Data processing centers

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Introduction


One of the most important articles of costs at an operational phase of the data processing center (DPC) is payment of the consumed electric power. What is unsurprising — all DPCs systems, starting with IT of the equipment for the sake of which normal functioning the DPC also is created, and finishing with alarm systems and supervision — consume the electric power. Therefore to save the most reliable method on power supply — to sell out computing and telecommunication devices and to close DPC. Unfortunately, without the working ADP and communication equipment business in modern conditions not representable therefore the option of a complete elimination of a data-center within this article will not be considered.
Power consumption of DPC as single system, it consists of consumption of separate systems, both information and telecommunication, and systems of engineering infrastructure, including also inevitable unproductive losses. To achieve economy of energy consumption in general, it is necessary to study possibilities of decrease in consumption of each subsystem.

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Network monitoring: as we monitor that all nodes worked for the large companies

2 years, 6 months ago

By the form this optics going on the wood to a collector it is possible to conclude that the assembler did not observe technology a little. Fastening on a photo also prompts that it is, probably, the seaman – a node sea.

I from command of ensuring physical operability of a network, in other words – the technical support which is responsible for that bulbs on routers blinked as it is necessary. We have "under a wing" different large companies with infrastructure over all country. In their business we do not climb, our task – that worked a network at the physical control layer and the traffic passed as it is necessary.

The general sense of work – permanent poll of nodes, removal of telemetry, runs of tests (for example, check of settings for search of vulnerabilities), ensuring working capacity, application monitoring, a traffic. Sometimes inventories and other perversions.

I will tell how it is organized also to steam of stories from departures.

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In 600 000 Arris modems found a backdoor in a backdoor

2 years, 6 months ago
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According to the specialist in the field of safety, 600 000 cable modems Arris will surprise users with not palatable surprise under the name "backdoor in a backdoor".

The software tester from Globo TV Bernardo Rodriguez published the report on the hidden libraries found in three cable modems Arris. In turn, thanks to the search engine Shodan allowing to investigate data on all devices connected to a network similar defects in 600 000 modems were revealed.

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Biometrics: Accounting of working hours + Fujitsu PalmSecure

2 years, 6 months ago


Systems of accounting of working hours already for a long time took the place in infrastructure of many enterprises where the manual wants to obtain operational and objective information about observance of labor discipline by employees. Fixing of time of receipt leaving is the useful tool for prevention of breach of confidence and valuable information for a human resources department. Today we will talk about the system of accounting of working hours using the Fujitsu PalmSecure technology in the work.

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You give a flash revolution! As quickly and safely to pass on flash drives

2 years, 6 months ago
Hi, Habr! Today we would like to tell about a new solution for acceleration of transition to the data processing centers using only flash drives. The effective HPE 3PAR StoreServ technology along with protection of StoreOnce will help clients with the innovation upgrade of data-centers. But give about everything one after another.

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New Samsung of 950 Pro PCIe SSD: everything that should be known

2 years, 6 months ago
The Samsung Electronics company declared start of the first solid-state drive of Samsung of a series 950 PRO of a form factor of M.2 with the scalable NVM Express controller (Non – Volatile Memory Express). Let's understand why Samsung passes to a new form factor and the controller, and also than it is good for the user.

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