windows 2012 server raid 1

I have windows 2012 server with raid 1 (two disks 1Tb each). One disk stops. What I have to do to replace the disk without loosing data ?
Jose BredariolPMPAsked:
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StuartTechnical Architect - CloudCommented:
Raid 1 is mirrored, which means data is written to both disk simultaneously. If you lose one then simply replace with a disk of similar size or larger (Windows will format to the same size as the other disk)
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
If you have a RAID adapter and the RAID is done at the hardware level then all you need to do is shutdown, replace the drive, follow the RAID card manufacturer instructions to rebuild the RAID.

If you are using Windows to create the RAID, then refer to following article:
Muhammad BurhanManager I.T.Commented:
Insert new hard disk and initialise it from the raid controller management before OS boot.
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Jose BredariolPMPAuthor Commented:
I'm using windows. I dont have RAID adapter.
It depends on your setup. If your server uses Disk caddies that are accessible from the outside without having to take the server apart, and you have setup your server's hardware RAID controller for the array, you just remove the bad disk while the server is up and running, swap in the new disk and it should start automatically syncing. If it doesn't, use your server's RAID controller utility to assign the new disk as a hot spare, and it should then start syncing too (at least that would be the method used on Dell Servers). Don't power off the server if it has hot-swappable disk bays.

If you are using Windows built-in RAID, and that is properly setup, you would shut the server down, replace the bad disk with the new one, power up, then in Windows Diskmanagement add the new disk to your array.
Mohammed KhawajaManager - Infrastructure:  Information TechnologyCommented:
I have also tried it by shutting down OS, replacing drive, rebooting computer and then going to disk management and initializing the disk and it worked.
Muhammad BurhanManager I.T.Commented:
Just put the same capacity hard drive, start your machine make that disk online and re initialise It for mirror.

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Jose BredariolPMPAuthor Commented:
Thanks all
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