Select one of the hard drives you will be using in your RAID 0 striped set from the list on the left. Launch Disk Utility, located at /Applications/Utilities/. Make sure the hard drives you intend to use are connected to your Mac and powered up. It also significantly increases the amount of time it takes to erase the drives from a few minutes to an hour or more per drive.Įrase the Drives Using the Zero Out Data Option This decreases the likelihood of losing data due to a failing block on the hard drive. When you zero out data, you force the hard drive to check for bad data blocks during the erasure process, and mark any bad blocks as not to be used. And since a RAID 0 set can be severely impacted by a drive failure, we’re going to take a little extra time and use one of Disk Utility’s security options, Zero Out Data, when we erase each hard drive. The hard drives you will be using as members of the RAID 0 striped set must first be erased. If you can not erase the WD with Disk Utility then try looking over instructions to erase it from the command line on this site. If the WD is not hardware locked to be only a Raid 1 and you are unable to find WD software you can try the steps below. Also there maybe software from WD on the drive that will change the Raid for you. You should check the box and see if this can be used for anything other than Raid 1. Some Raid devices are set/Fixed for only one type of Raid 0 or 1.
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