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I was using Amazone drive for store my photos and videos and important document etc.. by comparing the annual cost, now I'm thinking to move to a USB external hard drive because those files I'm not accessing so often and sometimes when I traveling cost for mobile data to download files are high.

My plan is to buy identical two USB external hard drives and use one as a storage and the other one as a backup. But I don't like the idea of mirroring as a schedule task by connecting both drives to a computer and using a mirror software.

Can I use some external hardware to do the mirror part same as RAID 1 concept. When files save in to a one drive, other drive also should get the same change. Something like a hardware hub or splitter.

As I feel this is a common requirement. Someone may achieve this before cloud storage get popular. Thanks in advance!

  • I think RAID could be configured with a USB hub and then with OS level software. Would you like a recommendation for a usb hub? – Bennett Yeo Oct 8 '18 at 5:28
  • This is a interesting video. Looks like RAID configuration in the drives it self. I want to try this. Not sure this will works for the hard drives in Windows or Linux. Tnx for sharing! – Nayana Adassuriya Oct 8 '18 at 5:31
  • My second link seems to suggest so for windows. This link suggests this can be done on POSIX systems. – Bennett Yeo Oct 8 '18 at 13:17
  • My suggestion would also be software RAID, unless you have some specific need for hardware RAID. – JMY1000 Oct 13 '18 at 0:29
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    I'm voting to close this question as off-topic because this would probably be better solved with a software recommendation. – JMY1000 Oct 13 '18 at 0:29
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You might look for a 2-Bay USB HDD case, for example the LOGILINK UA0154A.

There are plenty of casings around, see Google Shopping, but this depends on the size of your disks (2,5"; 3,5", ...). I would recommend two 2,5" SATA SSD's to get the best performance.

Edit: I really recommend to plug both drives to the same controller (let the "external hardware" do the RAID work for you).

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