Comparison of disaster recovery sites: which one to choose?


When disaster strikes - more often than not, unexpectedly - the consequences for your business can be unpredictable. They may include a loss of revenue, damaged business reputation, destruction of the production center, interrupted service delivery, and a loss of credibility with your customers.

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To avoid the risk of putting the business in danger, it is essential lớn prepare yourself in advance by designing an effective disaster recovery (DR) plan. One of the main components of a DR plan is the secondary site (also known as DR site), which will be used for data storage & rapid recovery in case disaster strikes. This blog post discusses the role of DR sites in the recovery process and how they can improve sầu business continuity.

What Is a Disaster Recovery Site?

A disaster recovery site is a location used by an organization for restoring its IT infrastructure và business-critical operations when a primary production center is affected by a natural or man-made disaster. Disaster Recovery sites are often built in a remote location so as to ensure that the disaster which has affected the main site will not affect the secondary site as well. Creating a DR site allows an organization khổng lồ continue conducting operations & delivering services without disruption, until the primary location is restored.

Data Protection with Backup & Replication

Designed for businesses of all sizes, Backup và Replication offers complete data protection for all of your production workloads, including VMware vSphere Backup, Hyper-V Backup, Microsoft 365 Backup và more.

Types of Disaster Recovery Sites

There are three types of backup sites: cold sites, warm sites, & hot sites. Let’s look at what each of the sites represents and what differentiates them from one another.

Cold site

A cold site is a backup facility with little or no hardware equipment installed. A cold site is essentially an office space with basic utilities such as power, cooling system, air conditioning, and communication equipment, etc. A cold site is the most cost-effective option among mỏi the three disaster recovery sites. However, due khổng lồ the fact that a cold site doesn’t have sầu any pre-installed equipment, it takes a lot of time khổng lồ properly mix it up so as lớn fully resume business operations. In case of a disaster, an organization would require help from IT personnel to lớn migrate necessary servers & make them functional in order lớn take on the workload of the primary site.

Hot site

A hot site is a backup facility which represents a mirrored copy of the primary production center. A hot site is equipped with all the necessary hardware, software, & network connectivity, which allows you to perkhung near real-time backup or replication of the critical data. This way the production workload can be failed over to lớn a DR site in a few minutes or hours, thus ensuring minimal downtime và zero data loss. A hot site is expected to lớn be always online và running without disruption so as to lớn ensure data synchronization between the sites.

A hot site is the most expensive sầu option ahy vọng the three. Thus, it is important lớn ensure that this type of a DR site is located far enough from the production center. This way you can decrease the possibility of a hot site being affected by the same disaster as the primary site.

Warm site

A warm site is considered the middle ground between the cold site & the hot site. A warm site is a backup facility that has the network connectivity & the necessary hardware equipment already pre-installed. However, a warm site cannot persize on the same màn chơi as the production center because they are not equipped in the same way. Therefore, a warm site has less operational capathành phố than the primary site. Moreover, data synchronization between the primary and the secondary sites is performed daily or weekly, which can result in minor data loss. A warm site is perfect for organizations which operate with less critical data and can tolerate a short period of downtime. This type of a DR site is the second most expensive sầu option.

Below you can see the main features of disaster recovery sites and how they compare.


Factors to lớn Consider When Choosing a DR Site

When creating a DR plan, the team responsible for the recovery process should decide which DR site type is most suitable for their organization. Making this decision can be quite challenging. As you can see, all of the DR sites types have sầu chất lượng advantages & disadvantages which differentiate them from one another. Time, budget, business priorities, và location are the most influential factors which will be discussed below.


The recovery team should first consider the period of downtime that your organization can tolerate before operations can be resumed (Recovery Time Objective sầu - RTO) và how much data (measured in time) can be lost without incurring significant losses (Recovery Point Objective sầu - RPO). This factor identifies how advanced your DR site needs to lớn be in order to deliver the recovery services on time. For this purpose, conduct a business impact analysis và identify the RTO and RPO values suitable for your organization.


When building a DR site, the issue of cost will surely be raised. In this case, the recovery team needs lớn calculate the amount of money that the company is willing to spkết thúc on a DR site. How expensive sầu the process of building a secondary site will be is generally defined by the required equipment, the number of IT personnel, & possible maintenance costs.

chú ý that the decision to go with a less costly option, such as a cold site, may eventually backfire during a DR event. Thus, an organization can incur significant financial losses as the result of prolonged inactivity. Moreover, the cost of purchasing and installing the required equipment in a short period of time can be extremely high.

Business priorities

The next factor worth considering is business priorities. In this case, the recovery team is expected lớn identify the functions and processes which are the most critical for an organization và what would be the effect of their disruption. Also, an organization should define the recovery order of the system components based on how critical they are. The decision is made with regard to lớn a business impact analysis which identifies the consequences of losing crucial data and services during a DR sự kiện.

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The choice of location is primarily dictated by how sensitive sầu & critical the data is, how big the allocated budget is, và what types of disaster the area is most subjected lớn. If you want to ensure near real-time data synchronization between the primary & the secondary sites, both sites should be located relatively cchiến bại to lớn each other. However, in this case, a disaster might affect both locations at the same time, leaving you with no chance for system recovery.

On the other h&, if the sites are situated too far away from each other, issues with data synchronization might occur. Moreover, it would then be necessary to lớn hire new IT personnel responsible for maintaining a remote DR site, which would eventually result in additional costs.

All the factors mentioned above can help you make the right choice ahy vọng the DR sites. To vì chưng so, evaluate the pros and cons of each DR site & consider how they comply with the needs và priorities of your organization.

Site Recovery with Backup & Replication

Managing the DR process can be a very challenging & resource-intensive sầu task. To avoid unnecessary overhead & ensure continuous availability of business operations, Backup & Replication has developed built-in Site Recovery functionality, which will be discussed below.

Site Recovery overview

Site Recovery was specifically designed with the ayên ổn of considerably simplifying the DR process. Essentially, Site Recovery functionality allows you to lớn create Site Recovery (SR) workflows which enable automation and orchestration of the entire DR process. SR jobs can be tailored in a specific way lớn serve a DR scenario of your choice. SR jobs can vary in scale & complexity and, due khổng lồ this discrepancy, they can be used for serving multiple different purposes. Thus, Site Recovery provides you with the opportunity for testing SR workflows without disrupting primary workflow, running planned & emergency failover and failbaông chồng, and performing successful data center migration.

With the Site Recovery feature, you can build a SR workflow by arranging actions và conditions in a specific order. The actions và conditions available for a SR job include the following: Run or Stop VMs/instances; Failover or Failbaông xã VMs/instances; Run or Stop jobs; Run script; Wait; Attach or Detach Repository; Chechồng condition, etc. The number of SR workflows that you can create with these actions is unlimited.

SR workflows can be run in two modes: production (used during an actual disaster) or demo (used to lớn kiểm tra the state of a SR job & its results). Should there arise some changes in the company’s infrastructure, Backup và Replication allows you to modify & update SR jobs khổng lồ reflect those changes.

Site Recovery benefits

As you can see, Site Recovery is a comprehensive and versatile feature which allows you lớn easily orchestrate & automate the DR process. However, this is just one of the many benefits that it provides. Below, you can see the danh mục of other advantages sported by the Site Recovery feature.

Non-disruptive testing. Testing a SR job is important as it allows you to lớn check its validity & verify that the expected results can actually be met. This way you can be sure that everything goes as planned during an actual disaster. With Backup & Replication, you can run SR job testing, either on demvà or on schedule without disrupting your production environment. Moreover, when running a SR job in thử nghiệm mode, you have sầu the opportunity lớn establish the RTO và see if the target can be met. After job completion, you can analyze the SR workflow & its results & update the SR job accordingly.

Built-in feature. Site Recovery is an exclusive sầu feature developed by Backup & Replication, which is built inlớn the product’s toolphối. This means that you aren’t required lớn buy a separate license for Site Recovery as it all comes with the package. Thus, Backup và Replication allows you to manage all of the recovery and data protection processes from a single pane of glass.

Cost-efficiency. Backup & Replication is an affordable solution which allows you lớn save time, effort, và money. As mentioned above sầu, Site Recovery is a built-in feature of Backup và Replication, meaning that, in addition lớn the Site Recovery feature, you also receive sầu the rest of the product’s integrated feature set. Unlike most of its competitors, Backup và Replication provides affordable per-socket licensing; thus, the entire DR solution is available for a fraction of the price.

Ease of use. Backup & Replication has a simple & user-friendly web-based interface, which allows you lớn manage data protection và recovery processes from anywhere. Moreover, creating a SR job includes only five sầu steps and it can be easily set up & run. In case disaster strikes, you are only a few clicks away from running a SR job and restoring your virtual infrastructure. Ergo, you no longer have sầu to lớn worry about manually configuring & monitoring the entire DR process and can be sure that your virtual environment can be safely recovered on time.


Any business can be negatively affected by unexpected events. To avoid losing revenue, clients, & even production, be sure to lớn kiến thiết a comprehensive sầu DR plan to protect your organization against any unpredicted disaster that might disrupt your production environment. Make sure that your data is securely stored & can be easily recovered during a DR sự kiện by building a DR site (cold, hot, or warm) that complies with the needs và priorities of your business. Backup & Replication can help you with managing the DR process from start to lớn finish. Its Site Recovery feature allows you lớn build an automated algorithm consisting of a number of actions và conditions arranged in a specific order which can be adjusted to meet your business needs & serve sầu various DR scenarquả táo. As you can see, the Site Recovery feature is an efficient tool that can significantly reduce downtime and achieve sầu 24/7 availability of business operations.

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To find out more about this feature, read our blog posts series or download a full-featured không tính phí trial to lớn demo the hàng hóa in your VMware, Hyper-V, or mixed environment today.

Chuyên mục: Công Nghệ