Dell MD3200 Changing the RAID Level of a Disk Group, Select Disk Group→ Change→ RAID Level, 124

The ownership of the disk group is changed. I/O to the disk group is now directed through this I/O path. You are finished with this procedure.

NOTE: The disk group may not use the new I/O path until the multi-path driver reconfigures and recognizes the new path. This action usually takes less than 5 minutes.

Changing the RAID Level of a Disk Group

Changing the RAID level of a disk group changes the RAID levels of every virtual disk that comprises the disk group. Performance may be slightly affected during the operation.

Guidelines to change the RAID level of a disk group:

•You cannot cancel this operation after it begins.

•The disk group must be in Optimal status before you can perform this operation.

•Your data remains available during this operation.

•If you do not have enough capacity in the disk group to convert to the new RAID level, an error message is displayed, and the operation does not continue. If you have unassigned physical disks, use the Disk Group>> Add Free Capacity (Physical Disks) option to add additional capacity to the disk group. Then retry the operation.

To change the RAID level of a disk group:

1In the AMW, select the Logical tab and select a disk group.

2Select Disk Group→ Change→ RAID Level.

3Select the appropriate RAID level and click Yes to confirm the selection. The RAID level operation begins.

Removing a Host-to-Virtual Disk Mapping Using Linux DMMP

To remove a host-to-virtual disk mapping using Linux DMMP, follow these steps:

1Unmount the filesystem containing the virtual disk:

#umount filesystemDirectory

2Run the following command to display multi-pathing topology:

#multipath -ll

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Configuration: Disk Groups and Virtual Disks