An initial value of a power cycle count associated with the memory device is identified. The power cycle count is incremented responsive to detecting a powering up of the memory device. Responsive to programming a block residing in the memory device, the block is associated with a current block family associated with the memory device. A currently value of the power cycle count is determined. Responsive to determining that a difference between the initial value of the power cycle count and the current value of the power cycle count satisfies a predefined condition, the current block family is closed.