New SSD, is that normal? CrystalDiskInfo

[Tommynew]

I've just bought a new ssd, install the crystal disk info and this is the report:

I don't know what that "umbral" in reallocated nand block means.

Is the ssd someway faulty? :S

Thank you.

 

[JaredDM]

Just a few things about SMART to start off. SMART has never actually been standardized between manufacturers. Different companies are still using different parameters to mean different things, and the way they record these values in RAW varies as well. So programs like Crystal Disk are largely approximating based on the most commonly used values. It's not at all uncommon for it to misread or misinterpret a value.

That having been said, NAND is actually one of the most unreliable memory types. Individual pages of memory will fail on a regular basis as part of its normal operation. The reality is that a 32Gb NAND is really more like 48Gb in storage size and uses a lot of XOR parity and wear leveling patterns to reliably return corrected data despite the sections that fail. It's like a mini RAID all within the same chip, which may have multiple crystals internally.

I wouldn't worry too much about it.

 

[Tommynew]

Thank you, i didn't understand too much, i think is over my knowledge :S

And what about that "average-block-erase-count"? Musn't it be 0 instead of 1 in a new sdd? :S

 

[JaredDM]

I really wouldn't worry about it. The SMART looks totally normal to me. The RAW values in the far right column will seem to be all over the place. Just watch the current values which right now area all at 100. When those start dropping from 100, then you've got a problem. Think of them all as a countdown to failure which starts at 100.

The threshold ("umbral") is the value at which the device will return a SMART fail and qualify for warranty claim.