Data on a full disk in RAID 1

[Enquiries]

I have 2 disks of 2To in a RAID 1 on my NAS. Lets say disk 1 and disks 2. The disks are FULL (no more space on them). I want to keep the data on the disk. Being on a RAID 1 they both contain the same data. To keep my data, can I remove just one of the disks lets say Disk 1 for keeps and use Disk 2 for something else? If I do, will I be able to read or retrieve my data on Disk 1 when I put it back in the NAS with a new Disk? Or do I have to take out the two disks (1 and 2) and keep them together to preserve and be able to read or retrieve my data. Thanks for your help.

[ed]

No, every time you put the disk back, it will make a mirror copy of the disk you have inside the NAS. You can use JBOD mode or basic individual mode. This would keep your data.