off data collection and conveyance self test during time : such differences

Dec 5, 2015 at 9:30 AM
Edited Dec 5, 2015 at 9:31 AM
relative to estimated times:
  • conveyance : on Seagate 1TB takes 2 minutes on WD 1TB takes 5 minutes
  • off data collection : on Seagate 1TB takes 10 minutes on WD 1TB takes 4 hours and 36 minutes !!!
    What is the matter ?
Dec 6, 2015 at 1:33 PM
Edited Dec 6, 2015 at 2:06 PM
It's normal, since each manufacturer can put a different test on his drive (maybe WD has coded a more intensive test than Seagate).

You can also see the data provided by the disk on Manage -> Device output panel, on the block called "General SMART Values". As example, this is the block of my OCZ Vertex 3:
General SMART Values:
Offline data collection status:  (0x00) Offline data collection activity
                    was never started.
                    Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0) The previous self-test routine completed
                    without error or no self-test has ever 
                    been run.
Total time to complete Offline 
data collection:        (    0) seconds.
Offline data collection
capabilities:            (0x7b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    Offline surface scan supported.
                    Self-test supported.
                    Conveyance Self-test supported.
                    Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                    power-saving mode.
                    Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                    General Purpose Logging supported.
Short self-test routine 
recommended polling time:    (   1) minutes.
Extended self-test routine
recommended polling time:    (  48) minutes.
Conveyance self-test routine
recommended polling time:    (   2) minutes.
SCT capabilities:          (0x0021) SCT Status supported.
                    SCT Data Table supported.
Marked as answer by Eruestan on 3/8/2016 at 6:50 AM