4TB WD Only Recognized 2TB by RAID Controller, How to Fix

I have a backup server with a RAID controller. I have 6 4TB Seagate drives, and I want to replace the old drives with WD drives of the same size. But the Adaptec RAID controller only recognizes 2 TB. What should I do? Thanks.

Best Answered by

Cici· Answered on Apr 22, 2024

It is a common error that a 4TB drive is only recognized as 2TB of space on the computer. Don't worry about this being a controller issue, as you already have a 4TB drive on the controller. If this is a new WD drive, you will need to initialize it first. During the initialization process, you need to select the correct partition style.

The MBR and GPT partition styles determine the maximum drive you can recognize on your computer: MBR supports only 2TB drives, while GPT has no limit.

To recover the full capacity of 4TB, you need to convert MBR to GPT. EaseUS Partition Master Server can ensure you can do the partition conversion while breaking the limit and avoiding data loss.

Free Download

100% Secure

  24/7 Tech Chat

Free Inquiry

Don't worry about the difficulty of the operation. The tool has a simple interface. Even if you are new to computers, you can figure out how to solve the problem of "4TB WD only recognized 2TB by RAID controller":

Step 1. Launch EaseUS Partition Master and go to "Disk Converter."

Step 2. Select Convert MBR to GPT and click "Next."

Step 3. Select the target MBR disk and click "Convert."

In Windows Server, you can also use commands to complete the conversion. However, the process is more complicated, so please choose an appropriate option.

Related Article: 4TB Hard Drive Only Shows 2TB Windows 11/10

People Also Ask

How Do I Convert MBR to GPT on HP Laptop

Due to the popularity of Windows 11, many HP users need to convert their MBR disks to GPT disks in order to allow the system to function properly. But some users ask, how do I convert MBR to GPT on HP laptop? Continue reading this page to learn more information.

Oliver

Jan 25, 2024

Answered: Which Software Can Convert MBR to GPT?

This post answered a question: which software can convert MBR to GPT? A brief introduction introduces the software and a specific tutorial about using this tool.

Roxanne

Apr 18, 2024

How Do I Fix Invalid Operation for Device 0 in VMware

On this page, you will learn why device 0 is not working in VMware. This page will easily help you find the cause and provide a solution to invalid operation for device 0 in VMware.

Cici

Apr 22, 2024

Windows Shows 2TB Instead of 12TB, Why and How to Fix

Why Windows shows 2TB instead of 12TB? This short article will help you utilize the hard drive of 12TB and remove this issue.

Sherly

Apr 18, 2024

Want to Know How to Check Mbr or GPT in Windows 11

Still don't know how to check MBR or GPT in Windows 11? Then, you can read this page and learn how to determine the partition style of your system disk in Windows 11.

Roxanne

May 16, 2024

Converted C Drive from MBR to GPT and Now I Have a New System Reserved Partition, Can I Remove It?

Some users find there are some new partition shows after converting MBR to GPT, and the question is: can I remove a new system reserved partition? This article will answer your question and explain why.

Roxanne

Apr 18, 2024