This drive (FFBX) uses CMR technology, and is suitable to use with RAID, but the S.M.A.R.T. status should be checked for errors.
This drive (EFAX) uses SMR technology, and is NOT suitable to use with RAID, and the S.M.A.R.T. status should definitely be checked because they tend to fail rather quickly.
CORRECTION: 8TB and up EFAX hard drives use CMR technology.
To verify the hard drive type and S.M.A.R.T. status, use either of the following options. The app I created also updates the smartctl database and reports the drive self-test status.
Option 1:
Enable SSH, then run the following commands, one at a time. The results can be easily copied and posted to the forums for further analysis if desired.
smartctl -a /dev/sda;smartctl -a /dev/sdb;
How to Access WD My Cloud Using SSH (Secure Shell)
Option 2:
Install the “Get S.M.A.R.T.” app for My Cloud OS5 NAS devices, available from the list below. The preformatted results can be easily copied and posted to the forums for further analysis if desired.
