> For the complete documentation index, see [llms.txt](https://knowledge.illumina.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.illumina.com/microarray/general/microarray-general-faq-list/000008510.md).

# How to format file path for DRAGEN Array IDAT sample sheet and GTC sample sheet for Windows OS

### **IDAT Sample Sheet**

#### **Local Analysis:** IDAT sample sheet can be a CSV or JSON formatted file with direct paths to sample IDAT files to enable analysis of samples from different directories.

**CSV format for Linux:**

```
Green IDAT Path,Red IDAT Path/path/to/sample1_Grn.idat,/path/to/sample1_Red.idat/path/to/sample2_Grn.idat,/path/to/sample2_Red.idat/path/to/sample3_Grn.idat,/path/to/sample3_Red.idat  
```

**CSV format for Windows (use double backslash):**

```
Green IDAT Path,Red IDAT Path\\path\\to\\sample1_Grn.idat,\\path\\to\\sample1_Red.idat\\path\\to\\sample2_Grn.idat,\\path\\to\\sample2_Red.idat\\path\\to\\sample3_Grn.idat,\\path\\to\\sample3_Red.idat  
```

**JSON format for Linux:**

```
[{"Green IDAT Path": "/path/to/sample1_Grn.idat","Red IDAT Path": "/path/to/sample1_Red.idat"},{"Green IDAT Path: "/path/to/sample2_Grn.idat","Red IDAT Path": "/path/to/sample2_Red.idat"},{"Green IDAT Path": "/path/to/sample3_Grn.idat","Red IDAT Path": "/path/to/sample3_Red.idat"},]  
```

**JSON format for Windows (use double backslash):**

```
[{"Green IDAT Path": "\\path\\to\\sample1_Grn.idat","Red IDAT Path": "\\path\\to\\sample1_Red.idat"},{"Green IDAT Path: "\\path\\to\\sample2_Grn.idat","Red IDAT Path": "\\path\\to\\sample2_Red.idat"},{"Green IDAT Path": "\\path\\to\\sample3_Grn.idat","Red IDAT Path": "\\path\\to\\sample3_Red.idat"},]  
```

####

#### **Cloud analysis:** The IDAT sample sheet can be a CSV formatted file.

```
beadChipName,sampleSectionName204753010023,R01C01204753010023,R02C01204753010024,R01C01204753010024,R02C01  
```

### **GTC Sample Sheet**

#### **Local Analysis:** GTC sample sheet can be a CSV or JSON formatted file with direct paths to sample GTC files to enable analysis of samples from different directories.

**CSV format for Linux:**

```
GTC Path/path/to/sample1.gtc/path/to/sample2.gtc/path/to/sample3.gtc  
```

**CSV format for Windows (use double backslash):**

```
GTC Path\\path\\to\\sample1.gtc\\path\\to\\sample2.gtc\\path\\to\\sample3.gtc  
```

**JSON format for Linux:**

```
[{"GTC Path": "/path/to/sample1.gtc"},{"GTC Path": "/path/to/sample2.gtc"},{"GTC Path": "/path/to/sample3.gtc"}]  
```

**JSON format for Windows (use double backslash):**

```
[{"GTC Path": "\\path\\to\\sample1.gtc"},{"GTC Path": "\\path\\to\\sample2.gtc"},{"GTC Path": "\\path\\to\\sample3.gtc"}]  
```

For more information, refer to the following:\* [DRAGEN Array User Guide](https://help.dragenarray.illumina.com/overview/readme)

* [DRAGEN Array Secondary Analysis Software Downloads](https://support.illumina.com/array/array_software/dragen-array-secondary-analysis/downloads.html) under section 'DRAGEN Array Sample Sheet Templates'

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| *For any feedback or questions regarding this article (Illumina Knowledge Article #8510), contact Illumina Technical Support* [*techsupport@illumina.com*](mailto:techsupport@illumina.com?subject=Question%2FFeedback%20Regarding%20Illumina%20Knowledge%20Article%20#000008510%20-%20Microarray%20\&body=Dear%20Illumina%20Technical%20Support,%0D%0A%0D%0A)*.* |


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