Raid 1 problem with 3/4 disks

since a year i use a ex400 with 2 hd 6tb in slot 1 and 2 in raid 1, now the disk are full, so i buy another 2 disks and put them in slot 3 and 4 in raid 1.
now when i open the page of nas i see 6 tb of data and 6 tb free, but when i try to write on it a message say that the disks are full…
can someone help me? thank you

Hello alexelli,

After placing the new drives in My Cloud enclosure, you need to create new volume. After this, you will be able to use new volume in My Cloud EX4. You can follow below steps to create new volume with new hard drives:

  • Open dashboard using your credentials.
  • go to “Storage”
  • select “RAID”
  • click on “Set up new RAID volume”
  • Follow the instructions and proceed

It is recommended to create backup of important data from My Cloud to another storage locations in order to prevent data loss issues.