Maintaining Storage Arrays

This section contains the procedures about how to maintain a storage system in a running cluster. Table 3-1 lists these procedures.

Table 3-1 Task Map: Maintaining a Storage System

Task	Information
Remove a storage array	How to Remove a Storage Array
Upgrade storage array firmware	How to Upgrade Storage Array Firmware
Replace a node-to-switch component	How to Replace a Node-to-Switch Component in a Cluster Without Multipathing in Oracle Solaris Cluster 3.3 With Sun StorEdge 9900 Series Storage Device Manual
Replace a node's host adapter	How to Replace a Host Adapter in Oracle Solaris Cluster 3.3 With Sun StorEdge A3500FC System Manual
Replace a disk drive	How to Replace a Failed Disk Drive in a Running Cluster in Oracle Solaris Cluster 3.3 With Sun StorEdge A3500FC System Manual
Add a node to the storage array	Oracle Solaris Cluster system administration documentation
Remove a node from the storage array	Oracle Solaris Cluster system administration documentation

Note - Most storage arrays are maintained through common array management software. For example, see Sun StorageTek Common Array Manager Software.

How to Upgrade Storage Array Firmware

Use this procedure to upgrade storage array firmware in a running cluster. Storage array firmware includes controller firmware, unit interconnect card (UIC) firmware, EPROM firmware, and disk drive firmware.

Note - When you upgrade firmware on a storage device or on an enclosure, redefine the stripe size of a LUN, or perform other LUN operations, a device ID might change unexpectedly. When you perform a check of the device ID configuration by running the cldevice check command, the following error message appears on your console if the device ID changed unexpectedly.

device id for nodename:/dev/rdsk/cXtYdZsN does not match physical 
device's id for ddecimalnumber, device may have been replaced.

To fix device IDs that report this error, run the cldevice repair command for each affected device.

Stop all I/O to the storage arrays you are upgrading.
Apply the controller, disk drive, and loop-card firmware patches by using the arrays' GUI tools.
For specific instructions, see your storage array's documentation.
Confirm that all storage arrays that you upgraded are visible to all nodes.
```
# luxadm probe
```
Restart all I/O to the storage arrays.
You stopped I/O to these storage arrays in Step 1.

How to Remove a Storage Array

Use this procedure to permanently remove a storage array from a running cluster.

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

If you are using Oracle Solaris Cluster Geographic Edition, you might need to back up all database tables, data services, and volumes that are associated with each partner group that is affected.
Remove references to the volumes that reside on the storage array that you are removing. For instructions, see How to Remove a Volume From a Device Group (Veritas Volume Manager) in Oracle Solaris Cluster System Administration Guide.
For more information, see your Solaris Volume Manager or Veritas Volume Manager documentation.
If you have a Fibre Channel array, disconnect the cables that connected Node N to the FC switches in your storage array.
On all nodes, remove the obsolete Oracle Solaris links and device IDs.
```
# devfsadm -C
# cldevice clear
```
Repeat Step 3 and Step 4 for each node that is connected to the storage array.

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