> For the complete documentation index, see [llms.txt](https://docs.hex-rays.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hex-rays.com/9.0/developer-guide/idc/idc-api-reference/alphabetical-list-of-idc-functions/1527.md).

# set\_storage\_type

```
Set storage type
     start_ea - starting address
     end_ea   - ending address
     stt     - new storage type, one of STT_VA and STT_MM
returns: 0 - ok, otherwise internal error code

long set_storage_type(long start_ea, long end_ea, long stt);

#define STT_VA 0  // regular storage: virtual arrays, an explicit flag for each byte
#define STT_MM 1  // memory map: sparse storage. useful for huge objects
```


---

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