Re: NAS with RAID5 - System Restore
Yes, one of the great flexibilities of mdadm is that you can move it to another machine and it will keep going, unless you have failures of the raid members and more than the raid level can sustain.
In this case, if your OS disk died, you can install ubuntu server on another disk and it will pick up the running mdadm array without any problems. From that point on, how fast can you restore your system to working state depends on how many changes you have done on the basic ubuntu install, which services are you running, and whether you can simply copy config files onto the new install and expect them to work.
For example, if I'm not mistaken, if you copy the smb.conf back for samba and restart the service, it's good to go.
Darko.
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Ubuntu 18.04 LTS 64bit
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