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How to resize RAID 1 partition on Windows Server without destroying data?

Posted on Jan 15, 2018 by Tracy King to Partition Master

This article introduces the best solution to resize RAID 1 partition without destroying data in Windows 2000/XP/Vista/Windows 7/Windows 8 and Windows Server 2000/2003/2008 32bit and 64bit.

Why do computer servers, especially Server users need to repartition RAID? Generally speaking, they need to repartition RAID regularly in order to optimize the usage of their server computers. A typical example is the system partition on the hardware RAID is running out of space. By the traditional method, you have to backup the files, delete the partitions, rebuild the hardware RAID and restore the data again. What a time-consuming task!

Generally, the Operating System is installed on RAID 1, so this low disk space problem often occurs on RAID 1. This article will tell you more about RAID 1 and give you the best solution to resize RAID 1 partition directly and safely.

What is RAID 1?

RAID 1 - Disk mirroring. Optimized for Redundancy

RAID 1 uses mirroring to write data to multiple drives. This means that when you write a file, the file is actually written to two disks. If one of the disks fails, you can simply replace it and rebuild the mirror.

The tradeoff with RAID 1 is cost. With RAID 1, you must purchase double the amount of storage space that your data requires.

Minimum number of drives: 2

Strengths: Very high performance; Very high data protection.

Weaknesses: High redundancy cost overhead; Because all data is duplicated, twice the storage capacity is required.

What is the common problem when the system partition space is low?

If the system partition is out of space, you'll find that it is beef-witted and you cannot install any other applications. Moreover, you cannot defrag the partition, impossible to upgrade the operating system. The most important, there is huge risk of system crash.

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 Server 2016 is supported

Is it possible to resize RAID 1 system partition in a safe and easy way? The answer is yes and this article will introduce a great solution to resize RAID 1 partitions directly and quickly without destroying data. In fact, after you build a RAID array, the virtual disk is detected by Windows as a physical hard disk, no matter which RAID array you built. If you encountered this problem, you'd better follow the steps below to resize the RAID 1 partition immediately.

How to resize RAID 1 partition?

1. Launch EaseUS Partition Master Server.

RAID partition manager software

There are two situations: If there is unallocated space behind C system partition, you can do as the following steps; if there is no unallocated space, then please shrink the partition behind the C partition and let the unallocated space behind the C partition.

2. Select partition you want to resize, right click it, select "Resize/Move partition" and drag the partition handle to resize the partition on RAID 1.

Resize RAID 1 partition

3. Please click Apply.