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When migrating an instance, there are two scenarios:
  1. Migrating an instance within the same region (simple and fast). You can directly refer to the documentation for migrating instances within the same region.
  2. Migrating an instance across regions.
If you frequently encounter situations where there are “Not enough idle GPUs”:you can switch from a Usage-based Mode to Subscription Mode (daily or weekly basis).Select the subscription pricing option when renting, or for instances you’ve already rented, click on ‘Switch to Subscription’ in the ‘More’ actions for the instance. Please refer to the documentation on changing the billing method for detailed instructions.

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Migrate System Disk

Whether migrating within the same region or across regions, it is recommended to use the image saving feature to migrate the system disk. After saving the image, you can select My Images to create a new instance in the new region.
Creating an instance from a private image in a new region may take some time (as the image needs to be transferred from the public network to the new region, and no charges are incurred during the creation process).If you’re concerned about being billed after the instance is created and started, here’s a helpful tip:You can set a scheduled shutdown. Set the shutdown time to 3 minutes from the current time, for example, if it’s 12:00 now, set the scheduled shutdown for 12:03. This way, the instance will automatically shut down after it’s created, saving you costs.The next time you start the instance or create one in the same region, you’ll enjoy faster startup speeds.

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Migrate Data Disk: Same Region

Go to the instance’s “More” -> “Copy Data Across Instances”. This feature copies data at a speed of approximately 100MB/s or more, and even small files have been optimized for very high speed. If you want to copy the entire data disk, simply enter the wildcard character * in the “Source Instance Data Path” field.
If you are migrating data from Instance A to Instance B, then:
  • Instance A is the Source Instance,
  • and Instance B is the Target Instance.

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Migrate Data Disk: Across Regions

Cross-instance copying will be transmitted over the public network, which is relatively slow, generally around 10MB/s. The speed can be several times slower when there are many small files.
For example: To copy a file (folder) from the source instance in Singapore Region A to the target instance in Kuala Lumpur Region A. Steps are as follows:
  • Step 1: For the target instance in Kuala Lumpur Region A, assume its SSH command is: ssh -p 66666 region-3.gpuhub.com
  • Step 2: Execute the following command in the terminal of the source instance in Singapore Region A.
Note that the parameter in the command below is -rP, not -rp. Replace all other parameters with the corresponding values from your SSH command.
bash
scp -rP 66666 /root/gpuhub-tmp/xxx root@region-3.gpuhub.com:/root/gpuhub-tmp/
This command remotely copies the file/folder (demonstrated here as: /root/gpuhub-tmp/xxx) from the source instance in Singapore Region A to the target instance in Kuala Lumpur Region A.

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Advanced Remote File Copy Method

If there are many small files, the direct scp folder method mentioned above can be very slow. You can use the following method to copy. Execute the following command in the terminal of the source instance in Singapore Region A:
bash
cd /root/gpuhub-tmp/ && tar cf - * | ssh -p 66666 root@region-3.gpuhub.com "cd /root/gpuhub-tmp && tar xf -"
This command copies all files in the /root/gpuhub-tmp directory of the source instance to the target instance.

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Using a Network Disk Method

You can first upload the data from the source instance to a cloud disk, and then download the data from the cloud disk to the target instance. For instructions on using a cloud disk, please refer to the public cloud disk documentation.