-2

RAID 0/1/5 in question. I am trying to determine whether or not it is possible to continue reading or writing if ONE hard drive in the array fails.

  1. For RAID 0 I assumed the entire array fails if one goes down (but is it still possible to read from the existing?
  2. For RAID 1 I assumed reading and writing continues as normal since there is a mirror copy.
  3. For Raid 5 I assumed that reading would continue as normal (just the information would have to potentially be reconstructed) and write should cease until a new drive is inserted

I am pretty sure that my assumptions for RAID 1 are correct, but I am uncertain on the behavior of RAID 0 and 5. Ideally you wouldn't touch RAID 5 until you could rebuild the new drive, but is it possible? Any resources on the subject would be awesome.

4

1 回答 1

1

RAID 0：如果一个磁盘出现故障，整个阵列都会出现故障（即不再能够从现有磁盘中读取）。

RAID 1：如果一个磁盘发生故障，阵列可以继续读写。更换新磁盘后，可以在线重建 RAID，但会影响性能。

RAID 5：如果一个磁盘发生故障，阵列可以继续读写。更换新磁盘后，可以在线重建 RAID，但会影响性能。

于 2015-04-20T16:23:24.873 回答