Display S.M.A.R.T. statistics for an SSD? I purchased a couple of used Intel 320-series 160 GB SSDs. I attached one of the drives to my MacBook Pro running OS X 10.8 using a SATA III to USB 3.1 cable.

When I attempted to view the drive statistics, it resulted in S.M.A.R.T. Status: Not Supported.



I'm fairly certain S.M.A.R.T. Status: Not Supported is wrong. According to Intel Solid-State Drive 320 Series, S.M.A.R.T. is supported. From the document (section 5.4):


  The Intel SSD 320 Series supports the SMART command set, which
  consists of:
  
  
  SMART READ DATA
  SMART READ ATTRIBUTE THRESHOLDS
  SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE
  SMART SAVE ATTRIBUTE VALUES
  SMART EXECUTE OFF-LINE IMMEDIATE
  SMART READ LOG SECTOR
  SMART WRITE LOG SECTOR
  SMART ENABLE OPERATIONS
  SMART DISABLE OPERATIONS
  SMART RETURN STATUS
  SMART ENABLE/DISABLE AUTOMATIC OFFLINE
  


How do I display the S.M.A.R.T. statistics for the SSD under OSX 10.8?
Getting  the SMART status is possible with these disks but not if they are attached to USB. The necessary ATA commands usually aren't propagated through the USB-controller.

You can try to get that working though by using OS X SAT SMART Driver.