-#define PAGE_DATA_SIZE 2048
-#define PAGE_SPARE_SIZE 64
-#define PAGE_SIZE (PAGE_DATA_SIZE + PAGE_SPARE_SIZE)
+
+#define MAX_BLOCKS 3000
+#define PAGES_PER_BLOCK_DEFAULT 64
+#define PAGE_DATA_SIZE_DEFAULT 2048
+#define PAGE_SPARE_SIZE 64
+#define FULL_PAGE_SIZE (chunk_size + PAGE_SPARE_SIZE)