Sharing a device containing pools set all the pools on the device to shareable. If any of these pools span multiple devices, ensure that each device has the same share setting, otherwise the entire pool may become unusable.
Making a device shareable enables device sharing for those devices in high-availability clusters that you want to be part of a shared-disk storage solution. If the Shareable for Clustering option is enabled, the selected storage device can be shared by multiple computers in a cluster.
If a device is a member of a software RAID device, marking the device as shareable for clustering automatically sets all the other member devices of the RAID as shareable for clustering.