Maintaining Storage Arrays

This section contains the procedures about how to maintain storage arrays. Table 2-2 lists these procedures. This section does not include a procedure about how to add a disk drive or a procedure about how to remove a disk drive. This section does not include these procedures because a storage array operates only when fully configured.

Caution! Caution - If you remove any field-replaceable unit (FRU) for an extended period of time, thermal complications might result. To prevent this complication, the storage array is designed so that an orderly shutdown occurs. This shutdown occurs when you remove a component for longer than 30 minutes. Therefore, a replacement part must be immediately available before you start an FRU replacement procedure. You must replace an FRU within 30 minutes. If you do not replace the FRU within this time, the storage array, and all attached storage arrays, shut down and power off.

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 (DID) might change unexpectedly. When you perform a check of the DID configuration by running the scdidadm -c command, the following error message appears on your console if the DID 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 DIDs that report this error, run the scdidadm -R command for each affected device.

Table 2-2 Task Map: Maintaining a Storage Array

Task	Information
Upgrade storage array firmware.	How to Upgrade Storage Array Firmware
Add a storage array.	How to Add Partner Groups
Remove a storage array.	How to Remove Partner Groups
Replace a disk drive in a storage array.	How to Replace a Disk Drive
Replace a node-to-switch fiber optic cable.	How to Replace a Node-to-Switch Component in a Running Cluster
Replace a gigabit interface converter (GBIC) or Small Form Factor Pluggable (SFP) on a node's host adapter.	How to Replace a Node-to-Switch Component in a Running Cluster
Replace a GBIC or an SFP on an FC switch, connecting to a node.	How to Replace a Node-to-Switch Component in a Running Cluster
Replace a storage array-to-switch fiber-optic cable.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace a GBIC or an SFP on an FC switch, connecting to a storage array.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace an FC switch.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace an FC switch power cord.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace a media interface adapter (MIA) on a storage array. This procedure does not apply to Sun StorEdge T3+ arrays.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace interconnect cables.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace a storage array controller.	How to Replace an FC Switch or Storage Array-to-Switch Component
Replace a chassis.	How to Replace a Chassis
Replace a node's host adapter.	How to Replace a Node's Host Adapter
Migrate from a single-controller configuration to a partner-group configuration.	How to Migrate From a Single-Controller Configuration to a Partner-Group Configuration
Add a node to the storage device.	Sun Cluster system administration documentation
Remove a node from the storage device.	Sun Cluster system administration documentation

The following is a list of administrative tasks that require no cluster-specific procedures. See the Sun StorEdge T3 and T3+ Array Installation, Operation, and Service Manual for the following procedures.

Replacing an Ethernet cable .
Replacing a power cable on the storage array.
Replacing a Power and Cooling Unit (PCU).
Replacing a unit interconnect card (UIC).
Addind a disk drive.
Removing a disk drive.

The following is a list of administrative tasks that require no cluster-specific procedures. See the Sun StorEdge T3 Array Controller Upgrade Manual for the following procedures.

Upgrading a Sun StorEdge T3 array controller to a Sun StorEdge T3+ array controller.

How to Upgrade Storage Array Firmware

Use one of the following procedures to upgrade storage array firmware. The procedure that you choose depends on whether you configured your partner-group configuration to support submirrors of a cluster node's volumes. Storage array firmware includes controller firmware, unit interconnect card (UIC) firmware, EPROM firmware, and disk drive firmware.

Note - For all firmware installations, always read any README files that accompany the firmware patch for the latest information and special notes.

Upgrading Firmware on Storage Arrays That Support Submirrored Data

Caution! Caution - Perform this procedure on one storage array at a time. This procedure requires that you reset the storage arrays that you are upgrading. If you reset more than one storage array at a time, your cluster loses access to data.

On the node that currently owns the disk group or diskset to which the submirror belongs, detach the storage array's submirrors. This storage array is the storage array on which you are upgrading firmware.
For more information, see your Solstice DiskSuite/Solaris Volume Manager or VERITAS Volume Manager documentation.

Disconnect both storage array-to-switch fiber-optic cables from the two storage arrays of the partner group.

Apply the controller, disk drive, and UIC firmware patches.
For the list of required storage array patches, see the Sun StorEdge T3 Disk Tray Release Notes. For the procedure about how to apply firmware patches, see the firmware patch README file. For the procedure about how to verify the firmware level, see the Sun StorEdge T3 and T3+ Array Installation, Operation, and Service Manual.

Reset the storage arrays.
For the procedure about how to reset a storage array, see the Sun StorEdge T3 and T3+ Array Installation, Operation, and Service Manual.

Disable the storage array controller that is attached to Node B. Disable the controller so that all logical volumes are managed by the remaining controller.
For more information, see the Sun StorEdge T3 and T3+ Array Administrator's Guide.

Reconnect both storage array-to-switch fiber-optic cables to the two storage arrays of the partner group.

On one node that is connected to the partner group, verify that the storage array controllers are visible to the node.
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Enable the storage array controller that you disabled in Step 5.

Reattach the submirrors that you detached in Step 1 to resynchronize the submirrors.
For more information, see your Solstice DiskSuite/Solaris Volume Manager or VERITAS Volume Manager documentation.


2. Installing and Maintaining a Sun StorEdge T3 Array or Sun StorEdge T3+ Array Partner-Group Configuration Configuring Storage Arrays How to Remove a Logical Volume