Solid-state storage UBER (unrecoverable bit error rate) is the percentage of bits that have errors relative
to the total number of bits that have been read.
To determine a storage media’s UBER, the vendor does extensive testing and uses the following
mathematical formula:
UBER= number of data errors/number of bits read
UBER is a traditional measurement for mechanical hard drives, but its
application in solid-state storage
must take into consideration the unique qualities of the media. In JDEC endurance testing, for
instance, the UBER values for SSDs are lifetime values for the sample of solid state drives being
assessed and a sector containing corrupted data is counted as one data error, even if it is read
multiple times and each fails to return correct data each time.
This was last updated in January 2012
Email Alerts
Register now to receive SearchSolidStateStorage.com-related news, tips and more, delivered to your inbox.
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States.
Privacy
More News and Tutorials
-
NAND flash-based storage is becoming a common alternative, but NAND flash could soon be replaced by newer forms of non-volatile memory like MRAM technology.
-
Micron launched the 6 Gbps, 2.5-inch P140m SAS SSD this week, and expects SAS to overtake SATA as the most popular SSD interface by 2016.
-
EMC makes its XtremIO all-flash array available on a limited basis, also adds eMLC PCIe server-side flash cards and rebrands VFCache.
-
Articles
-
Resources from around the Web
