View Single Post
  #5  
Old March 24th 21, 01:24 PM posted to alt.comp.os.windows-10,comp.sys.ibm.pc.hardware.storage
Paul[_28_]
external usenet poster
 
Posts: 1,467
Default SSD "overprovisioning"

J. P. Gilliver (John) wrote:


If, after some while using an SSD, it has used up some of the slack,
because of some cells having been worn out, does the apparent total size
of the SSD - including unallocated space - appear (either in
manufacturer's own or some third-party partitioning utility) smaller
than when that utility is run on it when nearly new?


The declared size of an SSD does not change.

The declared size of an HDD does not change.

What happens under the covers, is not on display.

The reason you cannot arbitrarily move the end of a drive,
is because some structures are up there, which don't appear
in diagrams. This too is a secret.

Any time something under the covers breaks, the
storage device will say "I cannot perform my function,
therefore I will brick". That is preferable to moving
the end of the drive and damaging the backup GPT partition,
the RAID metadata, or the Dynamic Disk declaration.

Paul