Re:

["Alexander V. Makartsev" <avbetev@gmail.com>]

On 23.04.2020 01:52, Default User wrote:

> Hey,
>
> A recent thread got me to thinking. So I checked my primary (only
> installed) ssd:
>
> === START OF INFORMATION SECTION ===
> Model Family:     SandForce Driven SSDs
> Device Model:     KINGSTON SV300S37A120G
>     
    This drive is based on MLC (2-bit) NAND type chips. According to
    datasheet [1] your drive is rated for 64TB TBW.
    
> 241 Lifetime_Writes_GiB     0x0032   000   000   000    Old_age
> Always       -       3157
> 242 Lifetime_Reads_GiB      0x0032   000   000   000    Old_age
> Always       -       2340
>     
    And you has written to it only 3.1TB. This means your drive should
    continue to serve you well for a long time, since your workload is
    low.
    The rest of SMART attributes only support my opinion.
    
> === START OF INFORMATION SECTION ===
> Model Family:     SandForce Driven SSDs
> Device Model:     SanDisk SDSSDA240G
>     
    This drive doesn't have any public information about type of NAND
    memory it based on, and manufacturer doesn't even rated it for TBW.
    If manufacturer this stingy to disclose technical specifications
    about his products, usually means that drive is based on cheap TLC
    (3-bit) or even QLC (4-bit) NAND type chips.
    These kind of chips do not have as much lifespan as MLC, so first
    drive is still better, except for its volume 128GB vs 240GB.
    
> User case is conventional, nothing taxing. No video editing, gaming, etc.
>
> And yes, I do back up, home partition only, using rsync to an external
> usb drive:
>
> sudo rsync -avvzHAXPish --delete /home/default
> /media/default/USBHD005/Backup_of_home_directory_of_Dell_Debian_dimwit
>
> I suppose I could [learn to] do a full system backup and restore to a
> new drive, if I had to.
>
> And if I do need to try to copy my current install to a new drive
> (instead of a fresh install), what is the EASIEST way to do that?
>
>     
    If you already doing regular backups you'll be fine. There are no
    signs of first drive to be failing anytime soon.
    As for full system backup, I usually use CloneZilla project [2].
    They have LiveCD which could be run from USB flash drive to perform
    efficient offline copy of entire disk image to another disk or over
    the network.
    If online full system backup is required then I hope somebody else
    will chime in with recommendation.
    
    
    [1] https://www.kingston.com/datasheets/sv300s3_us.pdf
    [2] https://clonezilla.org/
    
-- 
With kindest regards, Alexander.

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