From: lars@beagle-ears.com   
      
   On 2026-01-10, Stéphane CARPENTIER  wrote:   
   > Le 07-01-2026, Lars Poulsen  a écrit :   
   >> On 2026-01-07, Lawrence D’Oliveiro  wrote:   
   >>>   
   >>> This is why you have backups.   
   >>   
   >> Yeah, but do you know how long it takes to backup two terabytes   
   >> over a USB port?   
   >   
   > What for? If you are working for a hi-tech company, you have better ways   
   > to backup huge amount of data. If you are at home, waiting for your data   
   > to take two terabytes of space before considering backup is already too   
   > late.   
      
   I do different types of backups at different frequencies for different   
   purposes. At the office, I do nightly "dump" backups of all filesystems   
   on the server; level 0 on Saturdays, level 1 on weekdays. Copy to   
   offsite optical disks once or twice a month.   
   And onsite "rsync" to provide a "time machine" on a different drive.   
      
   At home, I just do the "rsync" to a 4 TB removable USB drive.   
      
   All of these run unattended (except for swapping the 100 GB M-Disc   
   platters). Since the first-level backups run overnight, they are   
   not a bother, and the spin-out to optical is a background activity in   
   the daytime that does not touch the live file systems.   
      
   But the complete restructuring needed to convert the large file   
   systems (each ranging from 100GB to a Terabyte) must almost all happen   
   on while keeping the file systems quiescent. That is hard to find "a   
   good time" for.   
      
   --   
   Lars Poulsen - an old geek in Santa Barbara, California   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)