Upgrading HD from 2TB to 3TB

Are you using X-RAID2 single-redundancy or dual-redundancy? What disks (how many and what capacity) were installed when you last did a factory reset?

If using single-redundancy you need to add another 2TB disk before expansion can take place.See X-RAID2 Single-Redundancy in Action. The volume can only be expanded if the extra space will be redundant (i.e. if any one disk fails data remains intact).

If using dual-redundancy you need at least four 3TB disks installed. Replace another 2TB disk, wait for the resync to complete then replace another disk etc.

Welcome to the forum!

Thanks for quick reply.
How I check the redundancy? From start I am having 6 HD of 2 TB capacity. Volume size in 9250 GB.
Do I have to replace another 2TB HD with 3TB.

If you were using dual-redundancy Frontview would have said so.

Yes, your volume capacity indicates that you are using single-redundancy. So after replacing one more 2TB HDD with a 3TB one there will be a resync and then vertical expansion should take place. You may need to reboot once or twice before vertical expansion takes place. Wait 5-10 minutes between each reboot.

Thanks! Will try tomorrow and inform