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Last updated：2021-03-29 15:01:20
KEC instances can be migrated. You can migrate a public KEC instance to a dedicated host, migrate a dedicated KEC instance between dedicated hosts of the same type, or migrate a dedicated KEC instance to a public KEC instance.
You can migrate a public KEC instance to a dedicated host to meet security compliance requirements for physical isolation.
The following table describes the mapping between the types of public KEC instances and the types of destination dedicated hosts to which the public KEC instances can be migrated.
| Type of a public KEC instance | Type of a destination dedicated host |
|---|---|
| General Purpose N3, General Purpose N2, Standard S4, and Compute Optimized C4 | General Purpose DN2 |
| I/O Optimized I1, I/O Optimized I1 (Networking Enhanced), Compute Optimized C1, Compute Optimized C1 (Networking Enhanced), Basic E1, I/O Optimized I2, I/O Optimized I2 (Networking Enhanced), and Performance Guaranteed X2 | Memory DR1, Computing DC1, Computing DC2, and Standard DS2 |
| Standard S3, Standard Network SN3, I/O Optimized I3, and Compute Optimized C3 | Standard DS2 |
You can migrate a dedicated KEC instance between dedicated hosts of the same type or to a public KEC instance. Note that you can migrate only one dedicated KEC instance between dedicated hosts of the same type at a time. You must wait for the migration completion of a dedicated KEC instance before you can migrate another one.
The migration process may take a long time. You cannot stop the dedicated KEC instance or reinstall its system during migration. Therefore, proper migration planning is required.
The dedicated KEC instance first enters the Migrating state. The time taken for migration depends on your host and the network environment during migration. After the migration is complete, the dedicated KEC instance enters the Running state again.
The following table describes the mapping between the types of dedicated hosts where dedicated KEC instances reside and the types of destination public KEC instances to which the dedicated KEC instances can be migrated.
| Type of a dedicated host where a dedicated KEC instance resides | Type of a destination public KEC instance |
|---|---|
| General Purpose DN2 | General Purpose N3, General Purpose N2, Standard S4, and Compute Optimized C4 |
| Memory DR1, Computing DC1, Computing DC2, and Standard DS2 | I/O Optimized I1, I/O Optimized I1 (Networking Enhanced), Compute Optimized C1, Compute Optimized C1 (Networking Enhanced), Basic E1, I/O Optimized I2, I/O Optimized I2 (Networking Enhanced), and Performance Guaranteed X2 |
| Standard DS2 | Standard S3, Standard Network SN3, I/O Optimized I3, and Compute Optimized C3 |
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