--- title: "NasVolumeAccessControlRule" slug: "common-apidatatype-nasvolumeaccesscontrolrule" tags: ["NAS", "Volume"] updated: 2026-09-17T09:25:01Z published: 2026-09-17T09:25:01Z canonical: "api.ncloud-docs.com/common-apidatatype-nasvolumeaccesscontrolrule" --- > ## Documentation Index > Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # NasVolumeAccessControlRule Available in Classic This is a NAS volume access control rule. ## Syntax The syntax is as follows. ``` private String serverInstanceNo; private String customIp; private Boolean readAccess; private Boolean writeAccess; ``` ## Field The following describes the fields. | Field | Type | Required | Description | | --- | --- | --- | --- | | `serverInstanceNo` | String | Conditional | Server instance number assigned to the NAS volume instance | | `customIp` | String | Conditional | Custom IP assigned to the NAS volume instance | | `readAccess` | Boolean | Required | Read permission status - `true` \| `false` | | `writeAccess` | Boolean | Required | Write permission status - `true` \| `false` |