{"id":118753,"date":"2025-04-15T17:52:05","date_gmt":"2025-04-15T09:52:05","guid":{"rendered":"https:\/\/version-2.com\/?page_id=110230"},"modified":"2025-07-28T15:43:27","modified_gmt":"2025-07-28T07:43:27","slug":"password-and-access-control-radius-2","status":"publish","type":"page","link":"https:\/\/version-2.com\/zh\/password-and-access-control-radius-2\/","title":{"rendered":"Function Area \u2013 Password and Access Control > RADIUS"},"content":{"rendered":"\t\t
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The best UPS systems are the key to an effective IT infrastructure. If the primary power source fails, UPS systems provide a backup power source to keep your IT equipment functional.<\/p>

The purpose of this is to prevent downtime, which you should avoid at all costs. According to Pingdom<\/a>, downtime can cost large businesses as much as $16,000 per minute, while small businesses can suffer a loss of $427 per minute.\u00a0<\/strong><\/p>

In this article, our team has looked at the leading UPS system manufacturers (Vertiv, Eaton, APC, etc.) and listed the best UPS battery backup systems from them on the market. Before we review those, let\u2019s look at key buying considerations for UPS systems.<\/p>

\ud83d\udca1 Why should you trust our reviews?<\/h3>

Most sites writing product reviews are driven by affiliate sales, which directly influence the equipment they recommend. Atera writes reviews independently and does not receive any compensation from companies. This ensures our recommendations are unbiased and solely based on the product\u2019s performance, quality, and value.<\/span><\/p><\/div><\/div>

Key considerations when selecting a UPS system<\/h2>

Before investing in a UPS system for your IT infrastructure, it\u2019s important to understand:<\/strong><\/p>

  1. The different types of UPS systems<\/strong><\/li>
  2. Your UPS power requirements<\/strong><\/li>
  3. Battery backup runtime<\/strong><\/li>
  4. Outlet requirements<\/strong><\/li>
  5. UPS form factor<\/strong><\/li><\/ol>

    Below is a detailed look into each of these.<\/p>

    1. Different types of UPS systems<\/h3>

    Before you go into more detail, first decide on the type of UPS system you need. Generally, there are three types of UPS systems:<\/p>

    1. Standby:<\/strong> Standby UPS systems provide basic protection, are the cheapest to configure, and take the least space. They are best for simple home and office use where power outages are infrequent and brief.<\/li>
    2. Line-interactive:<\/strong> Using a line-interactive UPS, the inverter is always on and part of the output. If the AC input fails, the inverter switches to battery power, which provides voltage regulation and filtering.<\/li>
    3. Online double conversion:<\/strong>\u00a0 Online double conversion UPS systems continuously convert incoming AC power to DC and then back to AC. The result is a clean, consistent power supply with zero transfer time during outages.<\/li><\/ol>

      If you\u2019re still not sure which one is the best, CyberPower has a great chart that helps to understand which UPS system solves your problems:<\/p>

      \"Screenshot