> For the complete documentation index, see [llms.txt](https://docs.plenit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.plenit.com/docs-en/productos/disaster-recovery/detalles/what-gets-replicated.md).

# What is Replicated

Disaster Recovery replicates the entire subscription infrastructure, not just the data. That's the difference from a backup, which is explained in[ What is Disaster Recovery?](/docs-en/productos/disaster-recovery/concepts/what-it-is.md). Here is the detail of what is included.

### Elements that are replicated

| Item                                | Replicated |
| ----------------------------------- | ---------- |
| Compute instances and configuration | Yes        |
| Disks and their contents            | Yes        |
| Networks and subnets                | Yes        |
| Private IPs                         | Yes        |
| Public IPs                          | Yes        |
| Firewall                            | Yes        |
| Port forwarding rules               | Yes        |
| VPN                                 | Yes        |

That's why, when failover is activated, the environment starts working again exactly as it was: the machine, its network, and its configuration are replicated; there is no need to rebuild them.

### What you can exclude

Not everything needs protection. You can adjust the scope of the plan by leaving out what doesn't add value.

| Exclusion        | What for                                                            |
| ---------------- | ------------------------------------------------------------------- |
| Per machine (VM) | Leave out secondary servers or ones that don't support the business |
| Per disk         | Leave out temporary or nonessential data disks                      |

> #### 📘 Replicate only what supports the business
>
> Excluding the nonessential keeps the replica lighter and more focused. 
>
> Review which machines and disks are truly critical before including everything by default.

### Where to go next

* How often it is replicated and how many restore points you keep: [Replication parameters.](/docs-en/productos/disaster-recovery/detalles/replication-parameters.md)
* How the replicated environment is activated: [Failover and failback.](/docs-en/productos/disaster-recovery/concepts/failover-and-failback.md)


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