there are 2 virtaul disks in the same RAID 5, should we run the consistency check on both Virtaul disks? If you have a sliced array, two virtual disks across the same physical disks, then yes, you should run consistency checks on both of them. A consistency check compares the parity against the data to make sure they match. If there is a mismatch then it attempts to recover the data. You want to do this before replacing the disk because after you replace the disk there will be redundancy for comparison. The patrol reads that the controller does automatically only check for bad blocks. They do not verify the data. That is the difference between a patrol read and a consistency check. After put the probelmatic drive in offline and then remove the drive and put a new drive in the same slot this way we will not have any disruption, am I correct? You should not have any disruption as long as there are no other failed or offline disks in the virtual disk. Performance will be affected during the rebuild and consistency check. RAID 5 is n+1, it can only sustain one drive failure. Make sure that there are no failed or offline disks. If there are failed or offline disks then you need to resolve that issue before taking the predictive failure drive offline. Thanks
Hi Guy's, We have an Poweredge R910 that saying one of the drives in RAID 5 Failure Predicted YES and it shows Online. We have bought a replacement Drive and we want to change this drive. Could you tell us what are the proper steps to replace this driver?   Thanks
Changing Drive