feat: update

content/posts/greenfield/data-storage/index.md

@@ -33,7 +33,6 @@ Segment 是 Object 的基本存储单元。一个 Object 的有效载荷由一
 
 ## EC Chunk
 
-Erasure Code (EC) is introduced to get efficient data redundancy on Greenfield. A segment is the boundary to perform erasure encoding. Some EC chunks are generated by erasure encoding one segment at a time. EC strategy is globally configured on the Greenfield blockchain. The default EC strategy is 4+2, 4 data chunks, and 2 parity chunks for one segment. The data chunk size is ¼ of the segment. As one typical segment is 16M, one typical data chunk of EC is 4M.
 引入 [纠删码（EC）](https://zhuanlan.zhihu.com/p/554262696) 是为了在 Greenfield 上获得高效的数据冗余。通过对 Segment 进行编码生成 EC chunk。EC 策略在 Greenfield 区块链上进行全局配置。默认的纠删码策略是 4+2，即一个区 Segment 有 4 个数据块（data chunk）和 2 个奇偶校验块 (parity chunk)。数据块大小为 Segment 的 1/4。由于一个典型的区 Segment 为 16M，因此 EC 的一个典型数据块为 4M。
 
 ## Piece