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If you get 2 and synch them to each other, that would be somewhat like raid 1
Sorry, there was a problem. Please try again later.If you could, I am not sure I would. External hard drives are pretty slow compared to internal on most machines. Let's assume they are speed equivalent, you still have an issue where drives can go offline, loose power or drop connections which will impact RAID. Poor person raid would use one as a backup and use a cloning tool to copy A to B. It's not RAID, but it will leave you with two copies. Instead, I'd recommend you use the 3-2-1 method. Three copies of the data, two different medias and one in the cloud. What I do is have a single external backup drive that is controlled by Time Machine. I also use a third-party backup solution to back everything up to the cloud. I used to have a Lacie 2-Big setup as RAID0. The hardware failed so I still lost everything. If you don't have a copy off-site, then if you have a fire or theft, then you've still lost everything.
Sorry, there was a problem. Please try again later.No, not as a raid. However you could use one to be a backup and have that one backup to the other. You can use robocopy to take mirror backups and use robocopy to copy one drive to the other. You'd setup a couple of Task Schedules and have them ran at certain times. I do something similar. I have my main RAID and robocopy weekly to one drive and robocopy monthly from that drive to another drive. This way I have some options should I need to restore files. Read up on robocopy as it has lots of the industry standard options.
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