Removing a disk drive enables you to reduce or reallocate your existing storage pool. You might want to perform this procedure in the following scenarios.
You no longer need to make data accessible to a particular node.
You want to migrate a portion of your storage to another storage array.
For conceptual information about quorum, quorum devices, global devices, and device IDs, see your Sun Cluster concepts documentation.
This procedure relies on the following prerequisites and assumptions.
Your cluster is operational.
You do not need to remove the entire storage array.
If you need to remove the storage array, see How to Remove a Storage Array.
You do not need to replace the storage array's chassis.
If you need to replace your storage array's chassis, see FRUs That Do Not Require Sun Cluster Maintenance Procedures.
Your nodes are not configured with dynamic reconfiguration functionality.
If your nodes are configured for dynamic reconfiguration, see the Sun Cluster system administration documentation and skip steps that instruct you to shut down the node. For a list of Sun Cluster documentation, see Related Documentation.
Is the logical unit number (LUN) that is associated with the disk drive a quorum device? This disk drive is the disk drive that you are removing.
Your storage array or storage system might not support LUNs as quorum devices. To determine if this restriction applies to your storage array or storage system, see Restrictions and Requirements.
# scstat -q
If no, proceed to Step 2.
If yes, relocate that quorum device to another suitable storage array.
For procedures about how to add and remove quorum devices, see your Sun Cluster system administration documentation.
Remove the LUN that is associated with the disk drive you are removing.
For the procedure about how to remove a LUN, see How to Delete a LUN.
Remove the disk drive from the storage array.
For the procedure about how to remove a disk drive, see your storage documentation. For a list of storage documentation, see Related Documentation.
After you remove the disk drive, install a dummy drive to maintain proper cooling.