Change instances on AWS

You can change instance types on AWS.

You can change instance types on AWS. For example, you can downgrade a c3.8xlarge instance to c3.4xlarge. See Supported AWS instance types for a list of valid AWS instances.

When you change AWS instances you may need to:

Reconfigure memory settings
Reset memory size in a resource pool
Reset number of CPUs in a resource pool

Reconfigure memory settings

If you change to an AWS instance type that requires a different amount of memory, you may need to recompute the following and then reset the values:

Note

You may need root user permissions to reset these values.

Reset memory size in a resource pool

If you used absolute memory in a resource pool, you may need to reconfigure the memory using the MEMORYSIZE parameter in ALTER RESOURCE POOL.

Note

If you set memory size as a percentage when you created the original resource pool, you do not need to change it here.

Reset number of CPUs in a resource pool

If your new instance requires a different number of CPUs, you may need to reset the CPUAFFINITYSET parameter in ALTER RESOURCE POOL.