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1.  Installing and Maintaining a Sun StorEdge T3 or T3+ Array Single-Controller Configuration Maintaining Storage Arrays How to Add a Storage Array  Previous   Contents   Next 
   
 

ProcedureHow to Remove a Storage Array

Use this procedure to remove a storage array and its submirrors from a running cluster. This procedure provides the flexibility to remove the host adapters from the nodes for the storage array that you are removing.

This procedure defines Node A as the node with which you begin working. Node B is the remaining node.

Caution! Caution - During this procedure, you lose access to the data that resides on the storage array that you are removing.

  1. Back up all database tables, data services, and volumes that are associated with the storage array. This storage array is the storage array you are removing.

  2. Detach the submirrors from the storage array that you are removing. Detach the submirrors to stop all I/O activity to the storage array.

    For more information, see your Solstice DiskSuite/Solaris Volume Manager or VERITAS Volume Manager documentation.

  3. Remove the references to the LUN(s) from any diskset or disk group.

    For more information, see your Solstice DiskSuite/Solaris Volume Manager or VERITAS Volume Manager documentation.

  4. Determine the resource groups and device groups that are running on Node B.

    # scstat

  5. Shut down Node A.

    For the procedure about how to shut down and power off a node, see your Sun Cluster system administration documentation.

  6. Is the storage array that you are removing the last storage array that is connected to Node A?

    • If yes, disconnect the fiber-optic cable between Node A and the FC hub/switch that is connected to this storage array. Afterward, disconnect the fiber-optic cable between the FC hub/switch and this storage array.

    • If no, proceed to Step 7.

    For the procedure about how to remove a fiber-optic cable, see the Sun StorEdge T3 and T3+ Array Configuration Guide.

    Note - If you are use your storage array in a SAN-configured cluster, you must keep two FC switches configured in parallel. This configuration maintains cluster availability. See "SAN Solutions in a Sun Cluster Environment" in Sun Cluster 3.x Hardware Administration Manual for more information.

  7. Do you want to remove the host adapter from Node A?

    • If yes, power off Node A.

    • If no, skip to Step 10.

  8. Remove the host adapter from Node A.

    For the procedure about how to remove host adapters, see the documentation that shipped with your nodes.

  9. Without enabling the node to boot, power on Node A.

    For more information, see your Sun Cluster system administration documentation.

  10. Boot Node A into cluster mode.

    For more information about how to boot nodes, see your Sun Cluster system administration documentation.

  11. Shut down Node B.

    For the procedure about how to shut down and power off a node, see your Sun Cluster system administration documentation.

  12. Is the storage array that you are removing the last storage array that is connected to the FC hub/switch.

    • If yes, disconnect the fiber-optic cable that connects this FC hub/switch and Node B.

    • If no, proceed to Step 13.

    For the procedure about how to remove a fiber-optic cable, see the Sun StorEdge T3 and T3+ Array Configuration Guide.

    Note - If you are use your storage array in a SAN-configured cluster, you must keep two FC switches configured in parallel. This configuration maintains cluster availability. See "SAN Solutions in a Sun Cluster Environment" in Sun Cluster 3.x Hardware Administration Manual for more information.

  13. Do you want to remove the host adapter from Node B?

    • If yes, power off Node B.

    • If no, skip to Step 16.

  14. Remove the host adapter from Node B.

    For the procedure about how to remove host adapters, see the documentation that shipped with your nodes.

  15. Without enabling the node to boot, power on Node B.

    For more information, see your Sun Cluster system administration documentation.

  16. Boot Node B into cluster mode.

    For more information about how to boot nodes, see your Sun Cluster system administration documentation.

  17. On all nodes, update the /devices and /dev entries.

    # devfsadm -C
# scdidadm -C

  18. Return the resource groups and device groups that you identified in Step 4 to Node A and Node B.

    # scswitch -z -g resource-group -h nodename
# scswitch -z -D device-group-name -h nodename

ProcedureHow to Replace a Host-to-Hub/Switch Component

Use this procedure to replace the following host-to-hub/switch components. You can use storage array in single-controller configuration with FC switches when you create a SAN.

  • Host-to-hub/switch fiber-optic cable

  • FC host adapter GBIC or an SFP

  • FC hub/switch GBIC or an SFP that connects a hub/switch to a node

  1. On the node that is connected to the host-to-hub/switch component, determine the resource groups and device groups that are running on this node. This host-to-hub/switch component is the component you are replacing.

    # scstat

  2. Move all resource groups and device groups to off the node.

    # scswitch -S -h from-node

  3. Replace the host-to-hub/switch component.

    • For the procedure about how to replace a fiber-optic cable, see the Sun StorEdge T3 and T3+ Array Configuration Guide.

    • For the procedure about how to replace an FC hub/switch GBIC or an SFP, see the documentation that shipped with your FC hub/switch hardware.

    • For the procedure about how to replace an FC host adapter GBIC or an SFP, see your host adapter documentation.

  4. Return the resource groups and device groups that you identified in Step 1 to the node. This node is connected to the host-to-hub/switch connection that you replaced. 

    # scswitch -z -g resource-group -h nodename
# scswitch -z -D device-group-name -h nodename
 		 
 
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