Managing system data for a data storage system

A data storage system comprising:

• means for receiving a host write command to write host data associated with a logical address to a non-volatile memory;
• means for determining a first physical address in the non-volatile memory mapped to the logical address in an address mapping table;
• means for checking for an indicator that the first physical address is bad;
• if the first physical address is indicated as bad, means for maintaining a valid count associated with a first set of physical addresses at a current value, wherein the first set of physical addresses comprises the first physical address, and wherein the first physical address indicated as bad is indicative of a read failure occurrence with the first physical address;
• and
• if the first physical address is not indicated as bad, means for marking the first physical address as invalid and decrementing the valid count associated with the first set of physical addresses.

A data storage system, comprising:

• a non-volatile memory, the non-volatile memory comprises a plurality of non-volatile memory devices;
• and
• a controller coupled to the non-volatile memory, wherein the controller is configured to:
• receive a host write command to write host data associated with a logical address to a non-volatile memory;
• determine a first physical address in the non-volatile memory mapped to the logical address in an address mapping table;
• check for an indicator that the first physical address is bad;
• if the first physical address is indicated as bad, maintain a valid count associated with a first set of physical addresses at a current value, wherein the first set of physical addresses comprises the first physical address, and wherein the first physical address indicated as bad is indicative of a read failure occurrence with the first physical address;
• if the first physical address is not indicated as bad, mark the first physical address as invalid and decrementing the valid count associated with the first set of physical addresses;
• initiate a write operation to write the host data associated with the logical address to a second physical address in the non-volatile memory;
• and
• update the address mapping table to map the logical address to the second physical address.