The operations are very simple: In Disk Utility, you need to go to File > RAID Assistant. The utility can check your disk for bad blocks in various test.Verify and Repair Disk Permissions via Terminal (Mac OS X)You can also use Disk Utility to set up RAID on your Mac. You can create a Redundant Array of Independent Disks (RAID) set to optimize storage performance and increase reliability in case of a disk failure.HDDScan is a Free test tool for hard disk drives, USB flash, RAID volumes and SSD drives. Create a disk set using Disk Utility on Mac. We can build a RAID with drives of unequal size, but then the smaller disk will dictate the arrays total capacity. All three disks need to be unformatted.Use quotes if you want a space in the name. Change arrayName to what you want the volume to be called, like 'Macintosh HD'. Support.apple.com And it seems Big Sur brings back support for RAID 0.To create a RAID 0 array in Terminal, the following command should work: diskutil appleRAID create stripe arrayName JHFS+ disk0 disk1. Diskutil repairPermissions / Verify and Repair Volume via Terminal (Mac OS X)Use Disk Utility on your Mac to create a RAID set to optimize storage performance and protect your data. Reading there, you can see that Disk Utility Mac is like the Disk. Follow the wizards to define RAID and save the settings.
![]() Disk Utility Raid Mac OS XIf you use the above command with the -p flag, then it will not be sticky, and will be the same as an exclusion you add from the Time Machine preference pane. When you use this command, the item you exclude remains in the Time Machine exclusion list even if you move it, which is not the case when you exclude items from the Time Machine preference pane. For example, if I want to exclude my Downloads folder from Time Machine backups, I would run the following:The tmutil addexclusion command has an interesting property: it's sticky. Run this command:The part stands for the path to a file or folder. Naturally, you can also do this from the command line, too. Exclude files and foldersYou can exclude certain files and folders from your Time Machine backups from the Time Machine pane in System Preferences. Myob v19 serialThen run this command to set up a new destination disk:Replace _volume_name_ with the name of the disk or volume you want to use. First, remove the current destination like this:In place of , type in the text string returned by the destinationinfo command. Run this command:You'll see something like this in Terminal:ID : B9DAT9A6-0C37-4C39-A2AE-10A3403C97F9To change the destination, you can use two commands. You can start by finding where Time Machine backups are stored. This is not the Backups.backupdb folder at the top level of your Time Machine volume, but rather the next folder down this is generally labeled with your Mac's name.For example, when I ran this command on my backups, I saw data like this:Here's what I saw when I ran the tmutil calculatedrift backup_folder command on my Mac.Note that this command takes a long time to run, as your Mac has to calculate a lot of information.The tmutil command offers many other options, such as the ability to inherit destinations, perform detailed comparisons of backups, restore items and much more. Run this command to see the delta between each of the Time Machine backups on your backup disk or volume:Replace _backup_folder_ with the path of the folder containing your backups. You can get a list of all the backups on your Time Machine disk with this command:This will show the full path of each backup.If you're curious about how much has changed in your Time Machine backups, there's a command that will let you find out how much of each backup is new. (You can now do this without the command line too, see "How to create redundant Time Machine backups.") Get Time Machine statsTime Machine saves a lot of backups: one per hour for the past 24 hours one a day for the past week and one a week before that. See man tmutil for more on setting up multiple backup destinations. ![]()
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