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# Enable RAID 0 on Bedrock in Linux

Bedrock V3000 provides up to 3 NVME x4 slots which support RAID 0 configuration

This guide provides step-by-step instructions for setting up a RAID array with two ADATA 256 NVME gen 3.0 drives on Ubuntu Server 23.04.

## **Table of Contents**

* [Test setup](#raidtestsetup)
* [RAID configuration steps](#raidconfigurationsteps)
  * [Create RAID partitions](#createraidparts)
  * [Create RAID device](#createraiddev)
  * [Format RAID device](#formatraiddev)
  * [Retrieve UUID of RAID partition](#retrieveuuidofraid)
  * [Edit fstab](#editfstab)
  * [Testing the configuration](#testingraid)

## **Test setup**

* 2x A-data legend 710 NVMEs
* Ubuntu Server 23.04 ([Customer image](/other-articles/snippets/bedrock-images-info.md))

Performance Test Results

With RAID :

* Command: dd if=/dev/md0 of=/dev/null bs=4M status=progress; sync
* Result: 510 GB copied in 149 seconds at a rate of 3.4 GB/s.

Without RAID (Single Disk)

* Command: sudo dd if=/dev/nvme0n1 of=/dev/null bs=4M status=progress; sync
* Result: 255 GB copied in 111 seconds at a rate of 2.3 GB/s.

## **RAID Configuration Steps**

## Create RAID Partitions

For each disk you want to include in the RAID configuration:

* Run: `parted /dev/sdX mklabel gpt` to create a new GPT label
* Create a primary partition with: `parted /dev/sdX mkpart primary ext4 0% 100%`
* Set the RAID flag with: `parted /dev/sdX set 1 raid on`

### Create RAID Device

* Use mdadm to create the RAID array:
  * `mdadm --create --verbose /dev/md0 --raid-devices=<number of disks> --level=0 /dev/<partition of first disk> /dev/<partition of second disk> <more disks>`

{% hint style="info" %}

* Replace , , ,\
  with the appropriate values.
* The RAID device will be named /dev/md0
  {% endhint %}

### Format RAID Device

* Format RAID device with: `mkfs.ext4 /dev/md0`

{% hint style="info" %}
/dev/md0 is used because in the previous command we created it with the name /dev/md0
{% endhint %}

### Retrieve UUID of the RAID Partition

* Run `blkid` to ge the UUID of the /dev/md0 partition
  * Example: `UUID="2ff3d24d-c123c-43d5-41ed-627bcdf54154"`

### Edit fstab File

* Open /etc/fstab using `vi /etc/fstab`
* Add the Line `<Your UUID> /home ext4 defaults 0 1`
  * Replace <>Your UUID> with the actual UUID from the previous step
  * You can also change /home which is the destination point to mount the RAID disk

### Test the Configuration

* Run `mount -a` to mount all filesystems
* Verify with `df -h` to see if the filesystem got mounted

{% hint style="warning" %}
Always ensure you have a backup of your data before making changes to disk or configurations.\
RAID 0 offers improved performance but no redundancy, meaning if one disk fails, all data is lost.
{% endhint %}


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