Detaching dynamic disks


Detaching dynamic disks
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The Detach Disk command stops disk access and disconnects the disks from SFW control.

Note the following:

The detach disk operation can only be performed on the disks that are in the attached state.
You may detach the disks that may or may not contain any data.
This operation can be used on all the disks in a dynamic disk group, however at least one disk in the dynamic disk group must remain in attach state to maintain the last active configuration or log copy.
Detaching disks of dynamic disk groups is not recommended for the disks that contain system or boot volumes, or the disks that contain a page file or quorum resource.

Note:

This operation fails the volume if all the plexes of a redundant volume are contained only on the disks specified for the detach operation.

Note:

Dynamic disks belonging to a Microsoft Disk Management Disk Group do not support the Detach Disk command.

To detach disks

Stop all processes using the volumes in the dynamic disk group, including all I/O to files.
If you do not stop the processes using the volumes, there is the possibility that data written to internal buffers may not get written to disk, resulting in data loss. It is also recommended that you back up all data on your volumes before you detach disks.
Make sure the status of the volumes on the disks is Healthy and the disks are online.
If the status is not Healthy, you should repair the volumes before you detach the disks.
Select the disks in a dynamic disk group or the individual disks, and select Detach Disk from the menu.
A warning message asks if you want to detach the disks.
Click Yes to detach the disk.
When disks are detached, their redundant volumes are shown as degraded. For non-redundant volumes, the disks are shown as failed.

If a disk is enabled for Hot Relocation and is detached, its subdisks are not hot relocated. Also subdisks cannot be hot relocated from other disks to a disk that has been detached.
Remove the disks from the system.
You may need to prepare disks for removal in some cases. See your hardware manual for information.