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New to Linux and Ubuntu. I am running Ubuntu version 14 with 4 x 2TB drives in a raid 10 array. 2 of the drives have failed and I cannot get the array to mount in order to fail the drives and add new ones to the array. I have replaced the drives and set up the new ones with partitions exactly the same as the others so they can be added to the array but I cannot get the array to mount so I can add the new drives to the array? I am using an SSD for the boot drive so the system boots to the OS without any problem. Is there a way to get the array mounted so I can add the new drives in hopes of restoring the array and data? Any help is greatly appreciated!

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A RAID 1,0 array (a.k.a. RAID 10, 1-0, ...) protects against a single drive failure and if you're extremely lucky against a dual drive failure.

Looks like you weren't extremely lucky, so you'll have to fail the entire array and restore your data from a back-up...

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    Nov 25, 2015 at 23:50

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