---
title: "Define Bucket Class"
slug: "define-a-bucket-class-2-4"
updated: 2026-11-04T20:00:17Z
published: 2026-11-04T20:00:17Z
canonical: "docs.vastdata.com/define-a-bucket-class-2-4"
---

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

# Define Bucket Class

A bucket class (`BucketClass`) acts as a container for various parameters and attributes that VAST COSI Driver uses when creating buckets.

You define a bucket class in the VAST COSI Driver [chart configuration file](/develop/docs/create-a-helm-chart-configuration-file-for-vast-cosi-driver-2-4).

A minimal bucket class would specify a virtual IP pool, a storage path, and a view policy, for example:

```plaintext
endpoint: <IP>
secretName: <secret>
<...>

bucketClasses:
  vastdata-bucket:
    vipPool: cosi_vippool
    storagePath: /buckets
    viewPolicy: my_s3_policy
<...>
```

Optionally, you can specify parameters that allow you to:

- Determine whether to keep or delete the bucket and the associated VMS user when the bucket object is deleted:

```plaintext
deletionPolicy: "Delete|Retain"
```
- For an SSL-protected VAST cluster, enable use of HTTPS when creating the bucket endpoint:

```plaintext
scheme: "http|https"
```
- Set up features and capabilities that can be configured for the bucket using the VAST REST API's `/api/v1/views/` endpoint of your VAST cluster.

For more information about options that can be specified for a bucket class, see [Bucket Class Option Reference](/develop/docs/bucket-class-option-reference-2-4).