Initiating the migration simulation

Use the migration simulation to estimate the cost of migrating servers to the public cloud.

You can simulate the migration of selected servers (from the Servers page) or all servers that a business service uses (from the Business services page). By default, you can migrate 1000 servers in one attempt. If the number of servers to be migrated exceeds this limit, only the first 1000 servers are migrated. Depending on how you want to initiate the migration simulation, select a tab and complete the steps.

Before you begin

Ensure that the administrator has completed the following tasks:

• Installed Migration Simulation
• Granted you necessary access to Migration Simulation
• Configured the required migration simulation settings

To migrate servers

1. In the navigation pane of the Views tab, select Migration Simulation, and click the Servers tab.

2. Review the details of all servers. 
   
   
   
   

   Column	Description	Associated metric or indicator
   Server	Name of the server.	Not applicable
   Provider	Cloud provider that hosts the resources that are assigned to the server or On-premises.	Not applicable
   System Type	System type used for the server. For example, Virtual machine - VMware (for On-premises) and Virtual machine - AWS (for AWS).	Not applicable
   Instance Type	A specification that defines the resources (CPU, memory, and storage) for an instance. For example. m1.small, m1.large. Note: This column is empty for the on-premises servers.	Not applicable
   Operating System	Operating system installed on the server.	OS_TYPE
   #CPU	Total number of CPU cores that are assigned to the server.	CPU_NUM
   CPU Util [%]	Percentage of total CPU capacity that is utilized by the server. This value enables you to determine whether the server is optimally utilizing the assigned CPU or not.	IND_CPU_DEMAND (with Aggressive subresource)*
   Memory [GB]	Total amount of memory allocated to the server.	TOTAL_REAL_MEM
   Memory Util [%]	Percentage of active memory used by the server.  This value enables you to determine whether the server is optimally utilizing the assigned memory or not.	IND_MEMORY_DEMAND*
   Storage [GB]	Total amount of storage that is allocated to the file system of the server. Information For AWS, the value is a sum of all the EBS volumes that are attached to the server and the instance storage (if available).	TOTAL_FS_SIZE, else TOTAL_DSTORE_SIZE For AWS: DISK_SIZE + SUM(ST_VOLUME_SIZE) of attached volumes For IBM: SUM(BYDISK_SIZE) + SUM(ST_VOLUME_SIZE)
   Storage Used [%]	Percentage of the total storage space that is utilized by the file system. This value enables you to determine whether the server is optimally utilizing the assigned disk capacity or not.	IND_STORAGE_DEMAND*

   ^*For details on the indicators used for metric computations in this view, see Indicators.

3. From the list of the servers, select the servers that you want to migrate. You can use the domain filter to filter out servers so that you have a shorter list of servers to select from.
   You can select either on-premises servers, servers from a particular cloud provider, servers from different cloud providers, or mix of all.

4. Click Simulate Migration.

5. Click Apply.
   The Simulate migration for # servers page opens, where # is the number of servers that you selected in the earlier step. 
   By default, the cloud provider with the lowest projected cost of migrated servers is selected.
   

To migrate a complete business service to the cloud, including all its servers

1. In the navigation pane of the Views tab, select Migration Simulation, and click the Business Services tab.

2. Review the details of business services. 
   
   

   Column	Description
   Name	Name of the business service that uses the resources of the cloud provider.
   Number of Instances	Number of active or running instances of resources that are assigned to the business service.
   Provider	Cloud provider that hosts the resources that are assigned to the business service. A business service might have resources provisioned on more than one cloud provider.

3. From the list of the business services, select the business service that you want to migrate. You can select one business service only.

4. Click Simulate Migration.
   The Simulate migration for service: <Business service> page opens, where <Business service> is the name of the selected business service.
   By default, the cloud provider with the lowest projected cost of migrated servers is selected.

Where to go from here

Evaluate the simulation results and modify the proposed updates.  For more information, see Evaluating the simulation results.