Today after restarting my data server I was unable to boot because one of the drives wasn't being recognized any more, it is still spinning when I connect it and not making many weird noises except for a very slight (kind of muted) ticking sound for a few seconds. I've tried to connect it using different cables and even another computer but neither worked.
I've setup this server about a year ago and haven't looked at it much since, I'm quite a newbie in the linux world and it all came sudden so I'm a little short on info.
Anyways, the drive in question was part of the RAID1 setup that I made using mdadm which consisted of 2 x 2TB drives, sda and sdb, and I think I may have failed to install grub on sdb or something like that? Because when I now start the server, the only thing it does show is a blinking underscore.
I'm not sure exactly how I configured the partitions back then, but I seem to remember that I made a separate partition for grub, system and data or something. But I'm not sure if I made the grub partition part of the RAID if that is even possible...I guess not? If it's not then I probably am missing grub on the disk that is still alive.
What is my best and safest option now? Because I really don't want to lose my data. I'm getting a new drive (same model) tomorrow but I guess I must be able to boot into the system to rebuild the RAID.