If this button is greyed out, make sure you’ve selected the volume in the sidebar that starts with “RAID Member” rather than the disk itself. You will need to manually reformat the array’s constituent drives before you can reuse them. Select one of the former array’s disks and click the Erase button in the toolbar. When you’re done, the array will be gone from the sidebar.ħ.
Be absolutely certain that you intend to completely erase all information on the disks.Ħ. Confirm your choice in the next dialog box. Click the button labeled “Delete RAID…”Ĥ. And not destroyed in the normal “still recoverable” way – destroyed in the “irrevocably gone” way.Ģ. Don’t forget that if you’re splitting up a RAID 0 array, all your data will be destroyed. If you need to delete a RAID array, that’s also possible. And if you’ve selected JBOD, all those disks will now appear under a single name and icon within the operating system, but no other changes will take place. If you’ve selected RAID 1, those disks will become mirrors of one another. If you have selected RAID 0, the disks you selected will be automatically striped together. Click on it to see more info about the array. If you return to the main Disk Utility window, you’ll see your brand new RAID array in the sidebar. JBOD is very much like a directory containing multiple physical disks and nothing more.ĩ. You won’t get any of the features or benefits of RAID 0 or 1. The OS combines two or more drives under one drive name and icon, creating one “logical” disk out of multiple physical disks.
MacOS also offers JBOD, which stands for “Just A Bunch Of Disks.” It’s as prosaic as it sounds. This is awesome for applications that require high disk performance but can tolerate a lower level of data integrity, like scientific computing or AV processing. RAID 0 includes no duplication, and if one drive fails in a RAID 0 array, the whole thing is hosed. This can lead to a significant boost in performance, since both disks can work together to provide data. RAID 0, commonly called “striping,” shares data across both disks without duplication. However, RAID 1 does provide protection against physical drive failure. This isn’t backup – any user errors or corruptions will immediately propagate to both drives. (4x 2TB drives) RAID 1 is not a backup, in that if you delete something its gone, however it will give you redundancy in case of a drive failure, which in my experience, is usually the reason for data. I have 2x 2TB RAID 1 arrays using OSX software RAID in my Hackintosh.
#Best software raid for mac mac os x
RAID 1, commonly called “mirroring,” involves two or more hard drives with exactly the same data. Mac OS X supports RAID 0, RAID 1 and RAID 0+1.
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