When a storage device is malfunctioning, you can avoid permanent device loss (PDL) conditions or all paths down (APD) conditions. Perform a planned removal and reconnection of a storage device.
Planned device removal is an intentional disconnection of a storage device. You might also plan to remove a device for such reasons as upgrading your hardware or reconfiguring your storage devices. When you perform an orderly removal and reconnection of a storage device, you complete a number of tasks.
Task | Description |
---|---|
Migrate virtual machines from the device you plan to detach. | vCenter Server and Host Management |
Unmount the datastore deployed on the device. | See Unmount Datastores. |
Detach the storage device. | See Detach Storage Devices. |
For an iSCSI device with a single LUN per target, delete the static target entry from each iSCSI HBA that has a path to the storage device. | See Remove Dynamic or Static iSCSI Targets. |
Perform any necessary reconfiguration of the storage device by using the array console. | See your vendor documentation. |
Reattach the storage device. | See Attach Storage Devices. |
Mount the datastore and restart the virtual machines. | See Mount Datastores. |