SSD Early Bad Block & Later Bad blocks

[Anaksy]

Hi guys! I was looking at my recently bought Corsair Neutron XT 480Gb S.M.A.R.T tool information and I notice that there are two values that I became curios about, the “EarlyBadBlockCount” and “LaterBacBlockCount”. Although the last one has its raw value to zero, the “EarlyBadBlockCount” has a raw value of 1363. Searching in the internet I couldn’t find any relevant information about these two things… Could you guys explain to me the difference between the two?

Thank you!

 

[Mark R]

Early bad block usually means that the block was bad during factory testing.

Later bad block usually means that the block has gone bad once the drive has left the factory.

 

[Anaksy]

Early bad block usually means that the block was bad during factory testing.

Later bad block usually means that the block has gone bad once the drive has left the factory.

So probably having "1363" of EarlyBadBlockCount is probably a tolerable manufacturing fault ? Should return my SSD ?

Thanks!

 

[Mark R]

Yes. This is normal, and is planned for in design.

Flash memory always has defects. SSDs are designed to be able to handle defects from the factory, and "new" defects that factory testing didn't pick up, or because the flash memory is wearing out.

 

[Anaksy]

Yes. This is normal, and is planned for in design.

Flash memory always has defects. SSDs are designed to be able to handle defects from the factory, and "new" defects that factory testing didn't pick up, or because the flash memory is wearing out.

Ok then! Thank you very much Mark!