> ## Documentation Index > Fetch the complete documentation index at: https://docs.kinetica.com/llms.txt > Use this file to discover all available pages before exploring further. # alter_tier

alter\_tier

alter\_tier(
name: string,
options?: Record\<string, string>,
callback?: GPUdbCallback,
): Promise\<AlterTierResponse>
Alters properties of an existing tier to facilitate resource management.

To disable watermark-based eviction, set both high\_watermark and low\_watermark to 100.
Parameters
- name: string
  
  Name of the tier to be altered. Must be an existing tier group name: vram, ram, disk\[n], persist, cold\[n].
- Optionaloptions: Record\<string, string>
  
  Optional parameters.
- Optionalcallback: GPUdbCallback
  
  Optional callback function
Returns Promise\<AlterTierResponse>

Promise\ - Promise resolving to the response
- Defined in src/GPUdb.ts:4764

alter\_tier\_request

alter\_tier\_request(
request: AlterTierRequest,
callback?: GPUdbCallback,
): Promise\<AlterTierResponse>
Alters properties of an existing tier to facilitate resource management.

To disable watermark-based eviction, set both high\_watermark and low\_watermark to 100.
Parameters
- request: AlterTierRequest
  
  Request object containing the parameters for the operation
- Optionalcallback: GPUdbCallback
  
  Optional callback function
Returns Promise\<AlterTierResponse>

Promise\ - Promise resolving to the response
- Defined in src/GPUdb.ts:4738

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