# Overview

Understanding the storage features and device types supported on the Qualcomm^®^ enables developers to configure, customize, and deploy storage capabilities in an optimal, efficient way.

- Universal flash storage (UFS) versions 2.1/2.2 and 3.1.

Note

Universal flash storage (UFS) is an open standard set by the Joint Electron Device Engineering Council (JEDEC). It is a high-performance storage interface designed to minimize power consumption.
Its high-speed serial interface and optimized protocol enable significant improvements in throughput and system performance.
- SD card version SD v3.0, 4‑bit

Note

The SD Card is only supported on the QCS6490 and QCS5430.

Storage is used for the following use cases:

- **Boot from primary storage device** - Store the required images to boot up the device by reading the images (XBL, AOP, TrustZone, kernel, and so on) from storage
- **Storage device has a partition that saves user-specific data** - For example, videos, photos, documents, and so on.
- **Support read-only logical unit number (LUN)/region** - Used for storing images such as TZ, CDT, and so on.</p><note>LUN is an independent processing unit on a UFS device.

Note

LUN is an independent processing unit on a UFS device.
- **Stores data in an authenticated, access-controlled, replay-protected manner in RPMB LUN/partition** - Replay protected memory block (RPMB) is a well-known LUN (WLUN) in UFS.

See [Chip Products](https://docs.qualcomm.com/bundle/publicresource/topics/80-70015-115/soc.html) that are supported on Qualcomm Linux.

Last Published: Oct 02, 2024

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