Theres an huge collection of Wikipedia’s data center photos taken by Vitor Grigas, taken in 2012.

https://commons.wikimedia.org/wiki/Category:Wikimedia_servers_in_2012

Servers are located at Equinix.

Equinix hosts most of the infrastructure for Digg and Salesforce.com, and provides colocation and interconnection services to a lengthy list of marquee customers, including Google, Yahoo, IBM, America Online, Akamai, Electronic Arts, GE and Merrill Lynch.
Source: http://www.datacenterknowledge.com/archives/2009/06/09/the-internets-busiest-intersection/

Continue reading Wikimedia Foundation Servers →

Source: Which tools and technologies are used to build the Stack Exchange Network?

Hardware list & prices
Continue reading Stack Exchange Hardware, with prices – in actualization – →

I’m in LOVE with stackoverflow/serverfault tech blogs…!
Gonna let you guys, the hardware photos/list that i’v grabbed from their blog…

Stack Overflow Rack Glamour Shots

• 5x 1U web servers
  2.83 Ghz quad core, 8 GB RAM, 2 drive RAID 1

• Primary 2U database server
  3.33 Ghz quad core x 2, 48 GB RAM, 6 drive RAID 10

• Backup 2U database server
  2.5 Ghz quad core x 2, 24 GB RAM, 6 drive RAID 10

• QNAP TS-409U network attached storage device
  500 Mhz CPU, embedded Linux, hot-plug 4 drive RAID 6

• Netgear GS724Tv3 ProSafe switch
  24 ports, gigabit, managed SNMP, web interface

• Tripp-Lite RS-1215-20 12 outlet power
  stripseriously? it’s a friggin’ power strip. Oh fine.

On ServerVault blog,  I think that I found they basic hardware specifications…

SQL servers have more than 256Gb RAM

Web servers have 32Gb RAM

MAC address from Linux with PHP

<?php
function getMacLinux() {
  exec('netstat -ie', $result);
  if(is_array($result)) {
    $iface = array();
    foreach($result as $key => $line) {
      if($key > 0) {
        $tmp = str_replace(" ", "", substr($line, 0, 10));
        if($tmp <> "") {
          $macpos = strpos($line, "HWaddr");
          if($macpos !== false) {
            $iface[] = array('iface' => $tmp, 'mac' =>strtolower(substr($line, $macpos+7, 17)));
          }
        }
      }
    }
    return $iface[0]['mac'];
  } else {
    return "notfound";
  }
}

?>

Found it on http://www.zimplicit.se/en/knowledge/how-get-mac-address-linux-php

About The Node Pole

The Node Pole region encompasses the municipalities Luleå, Boden and Piteå in the very north of Sweden, just by the Arctic Circle. The region has the epithet The Node Pole due to its northern position and potential to become a global hub for data traffic.

The Node Pole holds perfect conditions to create bespoke construction solutions for high tech, electricity intensive construction such as data centers. In addition to having an extremely stable electricity infrastructure, The Node Pole region provides natural cooling and renewable hydropower with low energy costs. It is also one of the most geologically, politically and socially stable areas in the world. The Node Pole is owned by the three municipalities, Luleå Business Agency and other regional business organizations.

Continue reading The Node Pole →