Patent attributes
Storage devices are capable of identifying zones for sharing parity blocks across zones. Active zones may be segregated across multiple active zones having similar zone properties, and grouped so that parity buffers can be shared. By identifying zones for optimal parity sharing, storage devices and systems can: (i) maintain independent parity for all zones during initial zone writes (i.e. during an erased state when data is written directly to pages and not to the zones), (ii) track zone write pointers and frequency of writes in the zones, (iii) segregate zones with higher correlation and group them together, (iv) utilize these groupings placed across various channels so that zones with high correlations, comprising of the zones that are written together and at the same rate, share the parity buffers, and (v) load and XOR individual parity buffers for optimal parity sharing across all zones.
