SSD Early Bad Block & Later Bad blocks

4 年前 — Early bad blocks are blocks that are detected as bad at the factory. This is a normal part of the production process. Later bad blocks are ...

Early Bad Blocks are those created during the manufacturing process, and generally account for approximately 1% of capacity. These bad blocks are an unavoidable ...

1 年前 — What is this bad block count and is it early or later bad blocks? Others suggested it indicates bad blocks detected while the SSD was configured ...

This white paper presents Innodisk's procedure to detect, correct and manage initial factory-marked bad blocks. (early bad blocks) in NAND Flash chips, ...

100 * later bad block / reserve block. 170 AAh. Bad Block. Information. Counts the number of bad blocks. Raw Value Byte [3~0]: Early bad block count. Raw Value ...

9 年前 — Early bad block usually means that the block was bad during factory testing. Later bad block usually means that the block has gone bad once the ...

在NAND Flash的制造过程中所产生故障区块，称为Early Bad Block。在使用的过程中，也会随着写入、抹除的操作次数增加，而逐渐产生故障区块，称为Latter Bad Block。

在NAND Flash的製造過程中所產生故障區塊，稱為Early Bad Block。在使用的過程中，也會隨著寫入、抹除的操作次數增加，而逐漸產生故障區塊，稱為Latter Bad Block。

快閃記憶體的故障區塊分為兩種類型：出廠時固有的故障區塊(Early Bad Blocks)和使用後產生的故障區塊(Later Bad Blocks)。固有故障區塊多於製程中產生，通常占總容量的1%。

一般來說,正規(非down-grade)的NAND-FLASH 可容許有小於1% 左右的壞的cell 稱“Early Bad Block”,日後對記憶卡的讀寫也可能會有cell 會陣亡,日後壞掉的cell 稱“Later Bad ...