---
title: Analyze index disk usage API example
description: The _disk_usage API analyzes how much disk space each field in an index or data stream consumes. It helps you understand storage distribution and identify...
url: https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/rest-apis/index-disk-usage
products:
  - Elasticsearch
applies_to:
  - Elastic Cloud Serverless: Unavailable
  - Elastic Stack: Generally available
---

# Analyze index disk usage API example
The `_disk_usage` API analyzes how much disk space each field in an index or data stream consumes. It helps you understand storage distribution and identify fields that use the most space. This page shows an example request and response for the [Analyze index disk usage API](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-disk-usage).

## Example request

The following request analyzes the disk usage of the index `my-index-000001`:
```json
```


## Example response

The API returns:
```json
{
    "_shards": {
        "total": 1,
        "successful": 1,
        "failed": 0
    },
    "my-index-000001": {
        "store_size": "929mb", 
        "store_size_in_bytes": 974192723,
        "all_fields": {
            "total": "928.9mb", 
            "total_in_bytes": 973977084,
            "inverted_index": {
                "total": "107.8mb",
                "total_in_bytes": 113128526
            },
            "stored_fields": "623.5mb",
            "stored_fields_in_bytes": 653819143,
            "doc_values": "125.7mb",
            "doc_values_in_bytes": 131885142,
            "points": "59.9mb",
            "points_in_bytes": 62885773,
            "norms": "2.3kb",
            "norms_in_bytes": 2356,
            "term_vectors": "2.2kb",
            "term_vectors_in_bytes": 2310,
            "knn_vectors": "0b",
            "knn_vectors_in_bytes": 0
        },
        "fields": {
            "_id": {
                "total": "49.3mb",
                "total_in_bytes": 51709993,
                "inverted_index": {
                    "total": "29.7mb",
                    "total_in_bytes": 31172745
                },
                "stored_fields": "19.5mb", 
                "stored_fields_in_bytes": 20537248,
                "doc_values": "0b",
                "doc_values_in_bytes": 0,
                "points": "0b",
                "points_in_bytes": 0,
                "norms": "0b",
                "norms_in_bytes": 0,
                "term_vectors": "0b",
                "term_vectors_in_bytes": 0,
                "knn_vectors": "0b",
                "knn_vectors_in_bytes": 0
            },
            "_primary_term": {...},
            "_seq_no": {...},
            "_version": {...},
            "_source": {
                "total": "603.9mb",
                "total_in_bytes": 633281895,
                "inverted_index": {...},
                "stored_fields": "603.9mb", 
                "stored_fields_in_bytes": 633281895,
                "doc_values": "0b",
                "doc_values_in_bytes": 0,
                "points": "0b",
                "points_in_bytes": 0,
                "norms": "0b",
                "norms_in_bytes": 0,
                "term_vectors": "0b",
                "term_vectors_in_bytes": 0,
                "knn_vectors": "0b",
                "knn_vectors_in_bytes": 0
            },
            "context": {
                "total": "28.6mb",
                "total_in_bytes": 30060405,
                "inverted_index": {
                    "total": "22mb",
                    "total_in_bytes": 23090908
                },
                "stored_fields": "0b",
                "stored_fields_in_bytes": 0,
                "doc_values": "0b",
                "doc_values_in_bytes": 0,
                "points": "0b",
                "points_in_bytes": 0,
                "norms": "2.3kb",
                "norms_in_bytes": 2356,
                "term_vectors": "2.2kb",
                "term_vectors_in_bytes": 2310,
                "knn_vectors": "0b",
                "knn_vectors_in_bytes": 0
            },
            "context.keyword": {...},
            "message": {...},
            "message.keyword": {...}
        }
    }
}
```