Francisco Ares wrote: > > > Em qui., 2 de jan. de 2020 às 07:49, Dale <rdalek1...@gmail.com > <mailto:rdalek1...@gmail.com>> escreveu: > > Neil Bothwick wrote: > > On Wed, 1 Jan 2020 20:27:34 -0600, Dale wrote: > > > >>> If you wait for a few seconds after the backup is completed before > >>> you unmount the drive, you should be OK. Although it may slow > down > >>> or any LEDs flash less frequently the drive may not stop spinning, > >>> unless there is some power save process taking control of it. > >>> > >> Given the speed, it is likely done when I tell the KDE thingy to > >> unmount. Usually, I start the backup and walk away for a few > minutes. > >> I do it with one of my scripts, if one can call what I do a > script, and > >> it does the date command at the end. > > Add a sync command to the end of the script to make sure all > filesystem > > buffers are flushed to disk before it finishes. > > > > > > Now there's a idea. Between the sync command and the unmount process, > it should be safe for sure. You made good use of those brain cells. > lol I didn't think of that and I don't recall anyone else thinking of > it either. Still wonder what the heck it is doing sometimes tho. > > Dale > > :-) :-) > > > Another thing to be considered is S.M.A.R.T. activity, that is proper > to the hard drive firmware. Don't know if it is safe or not to power > it down during that process though. I would wait until it really > finishes all activity. > > But do you really need to power it down? Mechanic (magnetic) hard > drives are known to have shorter lives if they are turned on and off > frequently. My desk computer is rarely turned off, I have 4 hard > drives, the oldest is close to 10 years old and SMART diagnostics are > always good. > > Best regards, > Francisco
That's what I meant when talking about selftest or media checks. As we know, most all drives have this function nowadays. As far as I know, all drives do this now, except SSD anyway. They may have some other thing they do tho. I've thought about the power on/off cycle and it's one reason I only back up once a day most all the time. Sometimes, I may not backup for a couple days or so depending on what's going on. While my puter runs 24/7, I've had drives go bad in them before too. Something always happens whether it is power on/off or media going bad or just plain mechanical/electrical failure. It's likely a gamble no matter what one does. It's always something to consider tho. Dale :-) :-)
