Managing parameter tiers
Parameter Store includes standard parameters and advanced parameters. You individually configure parameters to use either the standard-parameter tier (the default tier) or the advanced-parameter tier.
You can change a standard parameter to an advanced parameter at any time. You can’t change an advanced parameter to a standard parameter for the following reasons:
Reverting would cause the system to truncate the size of the parameter from 8 KB to 4 KB, resulting in data loss.
Reverting would remove policies attached to the parameter.
Reverting would change the parameter encryption.
For information about encryption used by Parameter Store, see How AWS Systems Manager Parameter Store uses AWS KMS in the AWS Key Management Service Developer Guide.
Note
If you no longer need an advanced parameter, or if you no longer want to incur charges for an advanced parameter, delete it and recreate it as a new standard parameter.
Standard and advanced parameters
The following table describes the differences between the tiers.
| Standard | Advanced | |
|---|---|---|
|
Total number of parameters allowed (per AWS account and AWS Region) |
10,000 |
100,000 |
|
Maximum size of a parameter value |
4 KB |
8 KB |
|
Parameter policies available |
No |
Yes For more information, see Assigning parameter policies in Parameter Store. |
|
Cost |
No additional charge |
Charges apply For more information, see AWS Systems Manager
Pricing for Parameter Store |
