I have Synology 12 bay NAS, DS3615xs.
Drives 1 to 5 are WD40EFRX-68WT0N0 firmware 80.00A80.
Drives 6 to 12 are WD40EFRX-68N32N0 firmware 82.00A82.
The issue I have is drives 1 to 5 will NOT complete an extended SMART smart test via the Synology NAS.
I can leave the test running for days and will not complete.
Extended smart test with drives 6 to 12 all complete fine in under 10 hours each.
Could this be a firmware issue with drives 1 to 5? Do they need a firmware update?