---
title: "RAG prerequisites"
slug: "rag-spec"
updated: 2026-09-17T09:33:50Z
published: 2026-09-17T09:33:50Z
canonical: "guide.ncloud-docs.com/rag-spec"
stale: true
---

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

# RAG prerequisites

Available in VPC

View supported specifications and usage fees for smooth use of RAG service.

## Cloud environment specifications

The cloud environment specifications supported by RAG are as follows:

| Item | Specifications |
| --- | --- |
| Region (zone) | Korea |
| Platform | VPC |
| Languages | Korean, English, and Japanese |

              Note

              

For more information on the VPC environment, see [service introduction](https://www.ncloud.com/product/networking/vpc) on NAVER Cloud Platform portal, and for more information on whether the VPC environments are supported for each service, see [Ncloud user environment guide](/docs/en/environment-environment-1-1).

## Service limits

Service limits for RAG service are as follows:

| Item | Specifications |
| --- | --- |
| Number of services that can be created | Up to 999 |
| Uploadable data | When integrated with Object Storage - File size: up to 100 MB per file - Supported formats: images (.jpg, .png, .tiff), documents (.pdf, .pptx, .docx, .hwp, .hwpx, .txt), data files (.md, .json, .xml) Evaluation dataset - Dataset size: up to 200 MB - Supported dataset formats: .csv, .xlsx |

### Integration settings

#### CLOVA Studio

To use the LLM models required for generating responses in the RAG service, you must integrate with the CLOVA Studio service via API on NAVER Cloud Platform. You need to separately subscribe to the CLOVA Studio product before using the service.

For more information about the CLOVA Studio service, see the following:

- [Portal > Services > AI Services > CLOVA Studio](https://www.ncloud.com/product/aiService/clovaStudio)

#### Object Storage

To perform indexing in the RAG service, you can either load user data using a RESTful API or integrate with the Object Storage service on NAVER Cloud Platform. If you plan to use data uploaded to an Object Storage bucket, subscribe to the Object Storage product in advance.

For more information on Object Storage, see the following:

- [Portal > Services > Storage > Object Storage](https://www.ncloud.com/product/storage/objectStorage)

              Note

              

The RAG service is provided as a closed beta test (CBT) and is available free of charge without limitations during the CBT period. After the CBT period ends, usage will be charged according to the pricing policy. SLA for the service during the CBT period is not guaranteed.