> 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/servers-2/how-to/how-to-resize-a-disk.md). # How to Resize a Plenit Disk Expanding a disk is straightforward. Shrinking it is not, because the current disk is not modified: you create a new smaller one, clone the system onto it, and then set it as the root disk instead of the original. In this tutorial, you go through that entire process. > #### 馃憤 What you get > > The server's root disk replaced with one of lower capacity, with the system cloned and booting normally. It is a long process: set aside time and do it without rushing. > #### 鉂楋笍 Before touching anything, make sure there is a way back > > This procedure replaces the boot disk. Take a snapshot or a backup of the server before starting, so you have somewhere to go back to if something goes wrong. ### Before you start * Log in to the Plenit platform. * Have a **Servers** or **Remote Desktop** with the server whose disk you are going to shrink. * Check that the data fits in the new size. This last part is what causes the most failures: the new disk has to be larger than the space **used**, not than the total space of the current disk. Check the actual usage before choosing the size. In Windows, from PowerShell: ```powershell Get-Volume ``` On Linux: ```bash df -h ``` > #### 馃毀 Look at the used space, not the total > > If the current disk is 100 GB but only 35 GB are occupied, you can clone to a 60 GB disk without any problem. > > What you cannot do is clone to a disk smaller than the data in use. ### Step 1. Create a new disk with the desired size 1. Open the Servers subscription from its card. 2. Open the subsection **Servers**, select the server and click **Edit** in the side menu. 3. Scroll down to **Disks**. There you can see the current root disk (in the example, `100 GB`). 4. Add a new disk, **connect it to the server**, set the new size (in the example, `60 GB`) and click **Create disk**. When finished, the new disk appears in **Disks** alongside the original root. {/\* 馃摳 CAPTURE 1 路 Disks subsection 路 add disk, connect to server and set the new size \*/} ![Creation of the new smaller disk in the Disks subsection](https://REEMPLAZA-URL/servidores-howto-reducir-disco-01.png) ### Step 2. Prepare the server with the boot ISO Cloning is done with the **AOMEI Backupper Linux**, which the platform provides as a boot ISO. 1. In the server panel, use the selector in the upper-right corner to add the ISO **AOMEI Backupper Linux** and confirm. 2. Click **Boot from ISO** and confirm. The server restarts and boots from the ISO. When the restart finishes, the platform indicates that booting from the ISO has completed. {/\* 馃摳 CAPTURE 2 路 ISO selector with AOMEI Backupper Linux and the Boot from ISO icon \*/} ![Loading the boot ISO and the option to boot from ISO](https://REEMPLAZA-URL/servidores-howto-reducir-disco-02.png) ### Step 3. Clone the current disk to the new one 1. Connect to the server with the **Console** option in the panel. A window opens with console access. 2. In the application menu, open the **Clone** tab and choose **System Clone**. 3. Select the **new disk** as the destination and start the cloning. You can follow the progress on screen. 4. When finished, click **Finish** and then **turn off** the server from the panel. > #### 鉂楋笍 During cloning, work through the console > > In this step you cannot use remote RDP connection: you have to operate from the **Console** in the panel. RDP access will not be available while the server boots from the ISO. {/\* 馃摳 CAPTURE 3 路 console with the Clone > System Clone tab and the new disk as the destination \*/} ![System cloning onto the new disk from the console](https://REEMPLAZA-URL/servidores-howto-reducir-disco-03.png) ### Step 4. Set the new disk as root With the server powered off: 1. First disconnect the **ISO**. 2. Go into **Disks** and **disconnect the two disks** from each one's menu. 3. Connect the **cloned disk** as root. On the **Connect Volume**, answer **Yes** to "Do you want it to be root?". 4. Go back to the panel and **turn on** the machine. {/\* 馃摳 CAPTURE 4 路 Connect Volume screen with the option "Do you want it to be root?" set to Yes \*/} ![Connecting the cloned disk as the root disk](https://REEMPLAZA-URL/servidores-howto-reducir-disco-04.png) ### Verify the result When the server boots, log in and confirm that the root disk is now the new one, with the reduced size: ```powershell Get-Volume ``` ```bash df -h ``` If the system boots normally and the size is as expected, the reduction is complete. At this point, you can delete the original disk if you no longer need it. ### If something does not fit | Symptom | Likely cause | What to do | | ------------------------------------------------------- | -------------------------------------------- | ----------------------------------------------------------------------- | | The server does not boot after being powered on | The cloned disk was not marked as root | Power off, check in **Disks** that the clone is root and try again | | The cloning stops or fails | The new disk is smaller than the data in use | Create a disk larger than the used space (check `df -h` / `Get-Volume`) | | You do not have access to the server during the process | You are trying to connect through RDP | Use the **Console** in the panel while booting from the ISO | --- # Agent Instructions This documentation is published with GitBook. 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