Scanner does not save progress when switching drives?

[Feng]

Because of over-heat protection, the Scanner needs to switch between drives from time to time, but it always starts from 0%, even when the drive has been scanned like yesterday. I have couple of big drives, and they will never be able to be finished because this problem.

[VapechiK]

hello

let's say for example, you have 4 drives that have never been scanned by StableBit Scanner.  you start automatic scanning, and drive1 begins scanning, reaching 17% scanned before whatever temp threshold is reached, causing Scanner to stop scanning drive1 and switch to let's say drive4.  let's say drive4 reaches whatever% scanned and the temp threshold is again reached so it stops scanning drive4 and goes back to drive1.  it will pick up where it left off at 17% but consider its 'resume scan point' of the remaing 83% to be 0% so that's what it reports in the GUI.  say you wait a while and drive1 now says 5% completed.  in fact 22% of drive1 has now been scanned.  follow what i'm saying here?  if you click the + sign on the far left of the GUI for whatever drive, you can confirm this easily from just looking at the block map.

cheers

[Feng]

Thanks for your response. Do you mean the percentage is the percentage of the remaining part, not the percentage of the whole drive?

[VapechiK]

yes, exactly.  not sure why it reports like that, but... it is what it is.  you could bump up the temp threshold a bit maybe.  i believe the default temp threshold for HDDs is 54 degrees celsius, but even that is WAY too hot for a spinner.  if your spinners regularly run above 40 degrees celsius, it would be a GREAT idea to find a way to keep them cooler.

[Feng]

Thanks! There is not much I can do about the temp, I guess I will let it be. Thank you for your help!

[Christopher (Drashna)]

To add to this, yes, the progress is saved.  The "scanning" percentage is based on what needs to be scanned currently, not on the whole disk.  Which can be misleading.

That said, you can see how the drive is tracked here: 
https://stablebit.com/Support/Scanner/2.X/Manual?Section=Disk Scanning Panel#Sector Map

And you may note that each sector has a date when it was last scanned.  Each region is tracked, and different regions on the same disk can and will have different dates and times.   Over time, this should actually help the software to "learn" when to scan the drives, by picking times when they are much less likely to be throttled.