Raid Manager For Mac

Disk Utility User Guide

Best Raid For Mac

Supports Individual, JBOD, RAID 0, 1, 3, 5, & 10 Modes This package contains the files needed for installing the JMicron HW RAID Manager. If it has been installed, updating (overwrite-installing) may fix problems, add new functions, or expand existing ones.

You can create a Redundant Array of Independent Disks (RAID) set to optimize storage performance and increase reliability in case of a disk failure. You can also create a set that concatenates smaller disks to act as one larger disk.

  1. In the Disk Utility app on your Mac, choose File > RAID Assistant.

  2. Select a set type:

    • Striped (RAID 0) set: A striped RAID set can speed up access to your data. You can’t create a RAID set on your startup disk; you must first start up your computer from another disk.

    • Mirrored (RAID 1) set: Protect your data against hardware failure with a mirrored RAID set. When you create a mirrored RAID set, your data is written to multiple disks so the information is stored redundantly. You can’t create a RAID set on your startup disk; you must first start up your computer from another disk.

    • Concatenated (JBOD) set: Increase storage space with a concatenated disk set. If you need one large disk, but you have several smaller disks, you can create a concatenated disk set to use as one large disk.

  3. Select the checkboxes of the disks you want to include in the set.

  4. For each disk, click the pop-up menu in the Role column and choose “RAID slice” or “Spare” to designate the disk as a standard member or spare in the set, then click Next.

  5. Enter a name for the RAID set in the RAID Name field.

  6. Click the Format pop-up menu, then choose a volume format that you want for all the disks in the set. (See File system formats available in Disk Utility.)

  7. Click the “Chunk size” pop-up menu, then choose a disk chunk size that you want used for all the disks.

    When you create a striped set, chunks of data from the same file are distributed across the drives. Ideally, you want data distributed across drives evenly and at an optimum size so that it can be efficiently accessed. If you want high data throughput from your set, choose a smaller chunk size so that data is spread across the drives and one drive can be accessing data while another is seeking the next chunk. With mirrored disk sets, choose a chunk size that matches the data you’re accessing. For example, when working with video files, your Mac is accessing large chunks of data, whereas when using a database of many small records, your disks may be accessing smaller chunks of information.

  8. If you are creating a mirrored RAID set, select the “Automatically rebuild” checkbox to allow the set to be automatically rebuilt when member disks are reconnected.

  9. Click Create.

  10. Click Done.

If you have a Mac Pro with a Mac Pro RAID card, use RAID Utility. It uses the RAID card for better performance and to create more types of RAID sets.

See alsoOverview of creating disk sets using Disk Utility on MacDelete a disk set using Disk Utility on MacUnmount a disk set or disk member using Disk Utility on MacRepair a disk in a mirrored disk set using Disk Utility on MacAdd a disk to a disk set using Disk Utility on Mac
  1. How to set up a RAID in macOS Sierra’s Disk Utility. This will erase any data that exists on the disks you want to use for the RAID. Back up that data if you want to save it.
  2. LaCie RAID Manager v2 for Mac - Manually Installing Software Updates when LRM's auto-update won't 5big and 8big Thunderbolt 2 - Not detected by LaCie RAID Manager v2.5 IMPORTANT: Unable to Write and Other Errors with LaCie 5big and 8big on macOS 10.12.1 (Sierra).
  3. To set the RAID mode with RAID Manager software, click the RAID Manager icon to run the program, then follow the instructions on the RAID Manager dialog box to set the RAID mode by PC or Macintosh. It is impossible to read internal data of the HDD which is working in combine mode change to normal mode or change the installation position of HDD.

Community Edition is available completely free for the non-commercial purpose only.


For commercial use, check out Paragon Hard Disk Manager.

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