{"id":36823,"date":"2019-10-31T22:14:01","date_gmt":"2019-10-31T19:14:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/ekskursiya-v-salatovyh-tonah\/"},"modified":"2019-10-31T22:14:01","modified_gmt":"2019-10-31T19:14:01","slug":"ekskursiya-v-salatovyh-tonah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/administrirovanie\/ekskursiya-v-salatovyh-tonah","title":{"rendered":"An Excursion in Shades of Green","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

The biggest transportation problem in St. Petersburg is the bridges. At night, you have to rush out of the pub without finishing your beer. Or pay twice as much for a taxi. In the morning, you must carefully plan your time so that as soon as the bridge is lowered, you can make it to the station like a nimble mongoose. The option of \"spending the night somewhere in the center, near the train station\" is not considered, as it is ideologically undesirable.<\/em><\/p>\n

<\/p>\n

\u2026\"Sapsan\", leaving at 5:30, was created by people who hate owls. Of course, it's very convenient to be in Moscow by nine in the morning, and St. Petersburg is incredibly beautiful during the white nights, but at half past four, when I sat in a taxi, I wanted to twist my head 270 degrees at the early bird who thought up this morning train.<\/p>\n

<\/p>\n

\"An<\/p>\n

<\/p>\n

\"All good data centers are alike\" \u2014 I thought when I learned that we were invited by the guys from DataLine. <\/p>\n

<\/p>\n

It turned out that each data center is good (or bad) in its own way, especially after you've collected all the bruises, gathered every stumbling block around, and learned lessons from your own (and, somewhat, others') rich experience. So we (consisting of five leading linkmeup members along with their friends and sympathizers) decided to check how good (or not so good) the OST and NORD data centers are. <\/p>\n

<\/a><\/noindex><\/p>\n

Having worked a bit on the road (there could have been an advertisement for a mobile operator here, but no \u2014 the coverage remained as poor as before), we disembark at the Leningrad Station. Well, at least not to Gazmanov.<\/em><\/p>\n

<\/p>\n

We began our tour of the \"green\" data centers with OST \u2014 \"that very one\" which recently \"burned\". Why in quotation marks \u2014 I'll explain later. For now, we stand, smoke, and wait for those who are late. We are photographing the RT office next door. There are many amusing stories about this proximity \u2014 starting from laying fresh asphalt and painting the curbs before the arrival of High Personnel, and ending with discounts at nearby cafes, which were given to DataLine employees due to the similarity of their badges.<\/p>\n

<\/p>\n

\"An
\nThe trumpet of totalitarian propaganda<\/em><\/p>\n

<\/p>\n

\"An
\nData center with strict (pass) regime<\/em><\/p>\n

<\/p>\n

Pass, rules of conduct, meat grinder at the entrance \u2014 we saw almost the same one during the tour at Linxdatacenter<\/a><\/noindex>. Have you seen many coffee shops in data centers? We, now, know a couple. Employees and clients have \"coffee\" deposits on their badges, which are regularly replenished. So, within reasonable limits, you can treat yourself to coffee completely free. We, as honored guests, were also treated.<\/p>\n

<\/p>\n

I can't say anything bad about the coffee \u2014 it's quite ordinary for a \"network\" coffee shop, but the location is involuntarily enticing, and the interior is right in line with the best modern traditions.<\/p>\n

<\/p>\n

\"An
\nThe interior of the local coffee shop<\/em><\/p>\n

<\/p>\n

\"An
\nPhotos of NORD data centers<\/em><\/p>\n

<\/p>\n

The tour starts from the office. Besides the well-known phrases on the walls and the white-green color scheme, there are also various amusing items. These are props left over from corporate theater performances (can you imagine the technical director of a network of data centers performing in a play? We know him personally). <\/p>\n

<\/p>\n

\"An
\nIndeed<\/em><\/p>\n

<\/p>\n

\"An
\nPhotos from performances<\/em><\/p>\n

<\/p>\n

The data center (or rather, four data centers) is located in a complex of industrial buildings built back in the last century (then \u2014 the \"Citro\u00ebn\" factory, and during the USSR \u2014 the \"Hydrodrive\" factory), so on one side \u2014 there's harsh industrial style, metal beams, a loft atmosphere, and industrial artifacts from various eras that are still found during various works. On the other hand \u2014 the hermetic zones of the data center need to fit into the existing structures, and you occasionally have to compromise with reality. However, I wouldn't say that these compromises affected quality \u2014 but the guys surely had to sweat during the design. Also, rumor has it that the Metro-2 passes somewhere nearby, but that's not confirmed.<\/em><\/p>\n

<\/p>\n

\"An
\nIn addition to the theater, there is also a museum here. The exhibits, naturally, are archaeological finds.<\/em><\/p>\n

<\/p>\n

A few words about the fire<\/a><\/noindex>Yes, the building (or rather, the roof) did indeed catch fire. The external cooling system blocks and refrigerant lines were damaged. Somewhere, the wiring burned out and the air conditioners lost power. In some areas, the refrigerant lines exploded. However, despite this, the hermetic zones withstood tons of water that poured on them, and the equipment survived. Recovery was managed by a 'headquarters' represented by senior management, gathering all available resources \u2014 they emptied all the copper tubes in Moscow and surrounding areas (even transporting them at night on BMW X5) and enlisted all sober installers. Critical equipment from affected data halls (which suffered due to the lack of cooling, not from the fire!) was promptly relocated to other rooms, so by five in the morning, not only all our services were restored, but also those of our clients. <\/p>\n

<\/p>\n

We personally checked the room that suffered the most \u2014 aside from the smell of smoke and replaced tiles of the false floor, there is nothing at all to remind of the fire (except for the racks with equipment that were 'temporarily' moved to another data hall and remained there).<\/p>\n

<\/p>\n

\"An
\nStatus Panel<\/em><\/p>\n

<\/p>\n

Walking through the corridors, we see a touchscreen display showing something that looks very much like a layout of the data center server rooms. This is the status panel. They are scattered throughout the corridors and allow on-site engineers to quickly find, for example, the necessary air conditioner, and simply provide the current status.<\/p>\n

<\/p>\n

Monitoring is built on Nagios (now there are several independent clusters) and covers all data centers (both OST and NORD). Additionally, there are applications for Android and iOS (for clients and employees), and a status page right on the website. <\/p>\n

<\/p>\n

On the display, I notice an unusually high PUE \u2014 it's not common to calculate this everywhere in Russia, but still, a PUE of 1.90 is quite high. The reason for this is purely economic \u2014 in 2012-2013, racks in data centers were selling like hot cakes, so energy efficiency was not a priority. We installed what was on the market, did it as quickly as possible, and didn't care about these PUE numbers at all, because why bother? During the design stage, 80-90% of the racks were purchased, and legislation in Russia doesn't care about energy efficiency. Though some commission in Amsterdam would be shocked by these figures.<\/p>\n

<\/p>\n

Nothing personal. Just business.<\/p>\n

<\/p>\n

\"An<\/p>\n

<\/p>\n

Another feature is the labeling of the data halls. At each site, the data halls, in addition to their \u2018official\u2019 alphanumeric codes, have \u2018human\u2019 nicknames derived from the naval alphabet (Alfa-Bravo-Charlie-Delta...). For some reason, all clients love the Whiskey hall. <\/p>\n

<\/p>\n

\"An
\nIn client care, there are no small details.<\/em><\/p>\n

<\/p>\n

\"An
\nSuch \u2018fences\u2019 are set up for some clients. We were not allowed to take pictures in the machine rooms, so here\u2019s a photo from DataLine \u00a9.<\/em><\/p>\n

<\/p>\n

DataLine clients are all large and reputable companies, and they do not like their equipment being photographed. Especially if the client's name (or logo) is prominently displayed on the rack in large letters. They simply don\u2019t like it. Therefore, we photographed the now-famous walls with various inscriptions and the engineering area. Not all of the engineering area can be photographed everywhere, but we tried. Since among our clients are large and respected firms, their requests can be specific\u2014special racks (or even some kind of super storage solution from several vendor racks), their own fences, their access control systems, their own video surveillance, and a rapid response team with rifles. In general, one of the unspoken (and spoken as well) rules of DataLine is to take care of the client and make things convenient for them. Starting with vests and equipped workplaces with internet access and chargers, and ending with various events for clients. The latter are also very useful because the same people move from company to company and bring them to DataLine. Simply because everything here is cozy, convenient, and reliable. DataLine\u2019s business is not just about renting rack spaces. It's also about cloud services, simultaneously certified under both Law 152-FZ and PCI-DSS (we're planning to do a podcast about it, so stay tuned for announcements), as well as providing connectivity (own fibers between facilities and from each of them to M9, their own optical ring around the city, and all the way to organizing the last mile to the client's office).<\/p>\n

<\/p>\n

\"An
\nM stands for Motivation.<\/em><\/p>\n

<\/p>\n

Speaking of inscriptions, ideas come not only from employees but also from partners and clients, after which the best ones can be voted on at official page<\/a><\/noindex> DataLine on FB. You can also suggest your idea there.<\/p>\n

<\/p>\n

\"An
\nMeeting on the Elbe<\/em><\/p>\n

<\/p>\n

\"An
\nCross-country (photo provided by DataLine)<\/em><\/p>\n

<\/p>\n

We stop at the Meet-Me-Room, where the operators are located. In the MMR (there are three pairs in OST, corresponding to the number of trunk optical inputs, for active and passive), connections from all data halls are consolidated. The cross connect area is all neat and orderly. However, where the operator\u2019s active equipment is located, you are reminded of the best years and footage from some BM18: a spaghetti of wires and a mix of equipment (DLink, Extreme, Juniper, Mikrotik\u2026 and so on up to ASR9k). There are more than fifty operators here, so it\u2019s quite colorful. From the MMR, optics and copper distribute across the machine rooms. At least two routes to each (variations are possible), so you don't have to worry about connection reliability. The MMR is called 'Elba', which is quite subtle.<\/p>\n

<\/p>\n

\"An
\nNeed IBM Power?<\/em><\/p>\n

<\/p>\n

Another discovery is the IBM P-series, which has never been turned on and has been sitting in one of the hallways for several years. The machine (along with the tape library and storage system) was ordered by one of the clients but was deemed 'unnecessary', so it was donated to the data center. And it has been sitting there ever since.<\/p>\n

<\/p>\n

It must be nice to be wealthy guys and make such gifts, right? (Or maybe it wasn't donated but forgotten. Or lost in a card game. But it has been there for a long time.)<\/em><\/p>\n

<\/p>\n

\"An
\nThis handsome machine is located in NORD-4.<\/em><\/p>\n

<\/p>\n

Let's go to the power center \u2014 three (or even four) DGUs for each data center (reminder: there are four in OST). The diesel reaches full power in 30-40 seconds and delivers 1900 kVA. N+1 redundancy, synchronization, and more are included. The longest time running on diesel in OST is 12 hours, while in NORD it is 2.5 days (after all, a storage capacity of 85 tons is no small feat).<\/p>\n

<\/p>\n

Of course, there are agreements with various fuel companies for fuel delivery. Switching to diesel occurs regularly, ensuring both fuel consumption and contract checks are maintained. By the way, according to colleagues, during the testing of DGUs in NORD, which usually takes several hours, grass even starts to grow in the spot where the hot air from the diesels is expelled, even in winter.<\/p>\n

<\/p>\n

After a quick snack at the familiar caf\u00e9, we head to the NORD site. This isn't just one data center but four independent buildings on the same territory. Each has its own power inputs, its own diesels, and its own cooling systems. NORD-1 and NORD-2 have passed the Uptime Institute M&O audit. The newest (and best DataLine data center) is NORD-4, so that's where we're headed. <\/p>\n

<\/p>\n

Despite the seemingly huge number of data centers in Moscow, there is still a shortage. Of course, you can get one or two racks without any problems. They might even give you twenty. More than that, however, becomes a question (and DataLine has clients with such needs \u2014 not just one or two). Specifically, there is currently space available in NORD-4 because a major client moved to their own newly built data center, but in other locations, luck may not be on your side. Nevertheless, the design of NORD-5 is actively underway, and it is promised to launch in early 2020.<\/p>\n

<\/p>\n

But let\u2019s return to our tour. Since we were traveling by car, we were allowed into the gateway, where armed guards took aim at us, checked our vehicle's registration number against the application, and asked all passengers to exit to receive passes (of course, presenting passports). Because B stands for security.<\/p>\n

<\/p>\n

NORD-4 is the pride of the company and a culmination of many years of experience in the construction and operation of data centers. It has Uptime Institute Tier III certifications for its design and facility (i.e., the constructed data center), as well as Operational Sustainability \u2014 the team approached the project with maximum responsibility. Inside, there are four independent hermetic zones with two halls within a single building. Each has its own energy center (diesel generators, battery rooms), cooling contours, and fire suppression systems. The only shared components are the optical inputs (two for the building) and the MMR.<\/p>\n

<\/p>\n

\"An<\/p>\n

<\/p>\n

\"An
\nModding a healthy engineer<\/em><\/p>\n

<\/p>\n

At the entrance to the data center, there awaits a familiar caf\u00e9 (well, why not?). We head up to the monitoring center. There are currently two main ones \u2014 in OST and NORD-4 (NORD-1, 2, and 3 also have their own duty shifts). From each center, you can monitor both sites, ensuring redundancy n+1 even here. On the video wall, we see the familiar dashboards in a green color scheme (there are, of course, many more parameters displayed than on the status screen). We chat a bit about monitoring \u2014 no trendy Prometheus or Grafana, just Nagios, pure tech, and custom visualizations. Over ten years (actually even more) of use, many custom checks and scripts have been written, so switching to something else seems quite an adventure. About once a month, another company appears, claiming to solve all problems 'quickly and painlessly', but it hasn't worked out so far. By the way, the video wall also operates on a self-made solution that turned out to be many times cheaper than commercial analogs. <\/p>\n

<\/p>\n

\"An
\nLocal Command Center<\/em><\/p>\n

<\/p>\n

When you design, build, and operate data centers for many years, you become less afraid to do things yourself rather than just buy off-the-shelf solutions. DataLine, for example, isn't shy about saying that they, simply due to their scale, have hit the maximum number of pitfalls, and each new data center is a product of difficult mistakes and experiences amassed over more than ten years. Of course, each new data center has its own innovations, and while walking through NORD, you often catch yourself thinking that people just took the initiative and did well. Not for the sake of show, nor for ratings and certificates \u2014 just a routine engineering process where, with each iteration, you grow and improve. An outside observer might say this is boring and conservative, but clients, on the contrary, support such stability with their own funds. To achieve quality, it's not always necessary to spend a fortune on engineering systems or software (even though sometimes it's unavoidable). Often, experience, knowledge, and engineering ingenuity make the difference. <\/p>\n

<\/p>\n

For example, the NORD-4 building has 3.5 floors. The first three are full-fledged, with ceilings of 4.5 meters, where the machine rooms are located. The last one is a technical floor, only 1.8 meters high, dedicated solely to the cooling system. Since it is a technical floor, the requirements for it are much lower, which allowed for a simplified design and saved costs.<\/p>\n

<\/p>\n

\"An
\nView of the triangular data center<\/em><\/p>\n

<\/p>\n

\"An
\nMax has a special kung fu for not being caught in photos<\/em><\/p>\n

<\/p>\n

We conclude the tour on the roof \u2014 here there is a great view of the nearby CHPP and residential area, as well as other NORD buildings. Two of them are triangular. Colleagues even joked about the fact that 'DataLine is foolish, building a triangular data center' to house triangular racks and triangular servers. But it\u2019s fine \u2014 they built it and successfully operate it while efficiently using the available space (which, in Moscow, is not free). Another surprising fact for me is that most commercial clients prefer to be located specifically in Moscow. A site just over fifty kilometers down the Minsk Highway (even with all necessary capacities and communications) is of little interest to anyone. So everyone crams into the limited space.<\/p>\n

<\/p>\n

\"An
\nCooling towers are no longer a data center but a CHPP.<\/em><\/p>\n

<\/p>\n

And so our journey has come to an end. <\/p>\n

<\/p>\n

Afterwards, there was a long and productive discussion about joint plans and future podcasts (I hope we won't have to wait long), so stay tuned for news, there will soon be more interesting content.<\/p>\n

<\/p>\n

Those wishing to see everything with their own eyes can join a tour organized by DataLine. Completely free, but by prior appointment. Those who mention the password 'linkmeup' will earn some karma.<\/p>\n

<\/p>\n

Stay tuned!<\/p>\n

Source: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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