How Does Migration Using SMS Differ from Migration Using IMS?
Migration Using SMS
SMS helps you migrate applications and data from x86 physical or virtual servers on premises or in other private or public clouds to ECSs on Huawei Cloud.
Advantages
- Ease of use
You just need to install and configure the Agent on source servers. You can then configure the target servers and start the migration on the SMS console. SMS takes care of the remaining work automatically.
- Seamless migration
Your services do not have to go down during the migration. If the network is interrupted during migration, SMS allows you to restart the migration and continue transferring data from where it left off.
- High security
SMS authenticates the Agent using AK/SK pairs. SMS uses dynamically generated SSL certificates and keys to encrypt transmission channels for data security.
Constraints
For details, see What OSs Can Be Migrated and What Are the Restrictions on Using SMS?
Migration Using IMS
If you want to migrate a server using IMS, you need to complete the initial network and driver (Xen or KVM) configurations on the server, create an image of the server, import the image to the IMS console, and use the image to create an ECS.
Advantages
- IMS enables you to import local images to the cloud platform and use the images to quickly create cloud servers for service migration to the cloud. A variety of image types can be imported, including VHD, VMDK, QCOW2, and RAW.
- Image files in VHD, VMDK, QCOW2, RAW, VHDX, QCOW, VDI, QED, ZVHD, or ZVHD2 format can be imported to the cloud platform. Image files in other formats need to be converted before being imported. The open-source tool qemu-img is provided for you to convert image file formats.
- Many popular OSs, such as SUSE, Oracle Linux, Red Hat, Ubuntu, openSUSE, CentOS, Debian, Fedora, and EulerOS are compatible.
- IMS allows you to share or replicate images across regions to migrate ECSs between accounts and regions.
- IMS enables you to create system and data disk images and reuse these images on the cloud platform for batch deployment.
Constraints
Local storage space is occupied and only image files no larger than 1 TB can be used.
Product Consultation FAQs
- Can I Migrate Physical Servers and VMs from Other Clouds to Huawei Cloud Using SMS?
- Can I Migrate ECSs from Huawei Cloud to On-Premises Environments or Other Clouds Using SMS?
- Can I Ask Huawei Cloud Technical Support to Help Me Migrate Services?
- Does SMS Support Resumable Data Transfer?
- How Do I Migrate an ECS from One Account to Another?
- How Do I Migrate an ECS from One Region to Another Using SMS?
- Will My Services on the Source Server Be Interrupted During Migration?
- How Do I Create an AK/SK Pair for a Huawei Cloud Account?
- How Do I Create an AK/SK Pair for an IAM User?
- How Do I Migrate a Linux Source Server as a Non-root User?
- What Information Does SMS Collect About Source Servers?
- How Do I Select a Target Server?
- How Do I Create an ECS?
- What Is the Block-Level Migration?
- What are Valid Data Blocks?
- How Does Migration Using SMS Differ from Migration Using IMS?
- Why Is the OS Name of the Target ECS Displayed on the ECS Console Different from That of the Source Server?
- How Do I Determine Whether a Migration Is Complete?
- Can I Migrate Only Some Services on the Source Server?
- Can the Target Server Run a Different Type of OS from the Source Server?
- What Determines the Specifications of a Target Server?
- Which Download Option Should I Choose When I Download the Windows Agent?
- Can I Migrate a Source Server If There Is No Corresponding Image Available on Huawei Cloud?
- How Does SMS Differ from IMS in the Migration Scenario?
- How Do I Display the OS Name of a Target Server on the ECS Console?
- What Are the Snapshots of a Target Server Used for?
- In a Linux File-Level Migration, How Do I Exclude Directories from Migration and Synchronization?
- Will an Incremental Synchronization Overwrite Existing Data on a Launched Target Server?
- How Do I Create a Target Server that Meets the SMS Requirements?
- Can SMS Migrate Self-built Databases, Big Data Services, or Websites Deployed on a Source Server?
- Can the AK/SK of a Federated User (Virtual IAM User) Be Used for Authentication During the SMS-Agent Startup?
- How Do I Synchronize Files in Specific Directories After a Linux File-Level Migration Is Complete?
- Will the Migration Be Affected If the SSH Service Does Not Use Default Port 22 on the Source Server?
- How Do I Obtain the SMS Domain Name?
- How Many Resources Will Be Used for a Linux Block-Level Migration?
- How Do I Configure Data Compression for a Linux Block-Level Migration?
- Do I Need to Activate My Windows OS and Paid Software After the Migration?
- Why Does the Target Server Not Synchronize the Clocks on the Source Server?
- How Do I Set the Number of Concurrent Processes for Linux File-Level Migrations?
- Which Directories Are Not Synchronized by Default During Incremental Synchronization on a Linux Server?
- How Do I Verify Data Consistency Between the Source and Target Servers?
- Can I Use a Temporary AK/SK Pair for Migration?
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