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How to resize raid 1 without data loss

  • Raid 1 is disk array adopted by many companies and personal user to maximally protect data safety. Regarding to Raid, which is a redundant array constituted with several hard disks, it servers as an independent large storage device under operating system. Therefore, it would be quite complex to manage such storage device. In this regard, user needs powerful partition magic server to resize partition while insuring data safety. MiniTool Partition Wizard Server Edition would be the very best solution.

    What is RAID?

    RAID is short for Redundant Array of Independent Disks, composed by several hard disks. Though containing several hard disks, it appears as an independent large storage device under operating system. It primarily enjoys the following three advantages:
    1. Provide disk spanning by organizing several disks as a logical volume.
    2. Improve disk accessing speed by dividing data into several blocks to write or read multiple disks in parallel.
    3. Offer fault-tolerant ability by imaging or verification.

    RAID contains diverse level of technology, respectively providing different speed, safety and cost performance. Generally, RAID includes NRAID, JBOD, RAID0, RAID1, RAID0+1, RAID3 and RAID5, etc.

    What is RAID 1?
    A RAID 1 creates an exact copy (or mirror) of a set of data on two or more disks. This is useful when read performance or reliability are more important than data storage capacity. Such an array can only be as big as the smallest member disk. A classic RAID 1 mirrored pair contains two disks (see diagram), which increases reliability geometrically over a single disk. Since each member contains a complete copy of the data, and can be addressed independently, ordinary wear-and-tear reliability is raised by the power of the number of self-contained copies.
    While RAID 1 can be an effective protection against physical disk failure, it does not provide protection against data corruption due to viruses, accidental file changes or deletions, or any other data-specific changes. By design, any such changes will be instantly mirrored to every drive in the array segment. A virus, for example, that damages data on one drive in a RAID 1 array will damage the same data on all other drives in the array at the same time. For this reason, systems using RAID 1 to protect against physical drive failure should also have a traditional data backup process in place to allow data restoration to previous points in time. It would seem self-evident that any system critical enough to require disk redundancy also needs the protection of reliable data backups.

    Resize RAID 1 partition without data loss:
    To resize RAID 1 partition without data loss, user should first download the partition magic server MiniTool Partition Wizard Server Edition at MiniTool Partition Wizard Download Center. After successful installation, user would come to following interface:




    In this main interface, user should select and right click desired partition, then click "Move/Resize".



    Entering this interface, user could set partition size by dragging left or right arrow or setting unallocated space, then click "OK" to enter next step:



    Lastly, click "Apply" to execute all previous settings.Now, this partition magic server helps us resize RAID 1 wiothou data loss.