Originally Posted by Defcon
Isn't SMART mostly useless? I remember reading the Google survey and the conclusion was you can't rely on SMART to predict when a disk will fail. Or am I mistaken?
I have a few F4 drives I haven't updated the firmware on as well. I have no extra space to copy the data off, and the procedure for the update (its destructive, must boot from dos, must be only disk attached to system) is cumbersome.
It is a stretch to call it useless.
SMART is not the most accurate method, but it does have some valuable predictive aspects.
What's more of an art than science is how we interpret the metrics.
Some metrics just speak for themselves (like massive read errors). The issue has been that a drive can still fail even when all the metrics look good.
With FlexRAID, SMART is also used for drive failure notification.
If a drive fails, you want notification ASAP before another drive fails or you make too many changes to your RAID.
Remembering that drives do tend to fail in bunches, responsiveness is critical.
Also, being able to run self-tests on the drives straight from the UI along with visual charting of every single monitored attributes, simply puts more tools at your fingertips to effectively manage your drives.