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1.  Installing and Maintaining a StorEdge Multipack Enclosure Maintaining Storage Arrays How to Add a Storage Array  Previous   Contents   Next 
   
 

ProcedureHow to Replace a Storage Array

Use this procedure to replace a storage array in a running cluster. This procedure assumes that you are retaining the disk drives in the storage array that you are replacing. This procedure also assumes that you are retaining the references to these disk drives.

If you want to replace your disk drives, see How to Replace a Disk Drive.

  1. If possible, back up the metadevices or volumes that reside in the disk array.

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

  2. Perform volume management administration to remove the disk array from the configuration.

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

  3. Disconnect the SCSI cables from the storage array. Disconnect the SCSI cable on the SCSI OUT connector, and then disconnect the cable on the SCSI IN connector as shown in Figure 1-4.

    Figure 1-4 Replacing a Storage Array

    Illustration: The preceding context describes the graphic.

  4. Power off, and disconnect the storage array from the AC power source.

    For more information, see the documentation that shipped with your storage array and the labels inside the lid of the storage array.

  5. Connect the new storage array to an AC power source.

    Refer to the documentation that shipped with the storage array and the labels inside the lid of the storage array.

  6. Connect the SCSI cables to the new disk array. Reverse the order in which you disconnected the cables as shown in Figure 1-4.

  7. One disk drive at a time, remove the disk drives from the old disk array. Insert the disk drives into the same slots in the new disk array.

  8. Power on the storage array.

  9. On all nodes that are attached to the storage array, run the devfsadm(1M) command.

    # devfsadm

  10. One at a time, shut down and reboot the nodes that are connected to the storage array.

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

  11. Perform volume management administration to add the storage array to the configuration.

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

ProcedureHow to Remove a Storage Array

Use this procedure to remove a storage array from a running cluster. This procedure assumes that you want to remove the references to the disk drives in the storage array.

  1. Perform volume management administration to remove the storage array from the configuration.

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

  2. Disconnect the SCSI cables from the storage array. Disconnect the SCSI cables in the order that is shown in Figure 1-5.

    Figure 1-5 Removing a Storage Array

    Illustration: Disconnect the cable from Node 1, and then disconnect the cable from Node 2.

  3. Power off and disconnect the storage array from the AC power source.

    For more information, see the documentation that shipped with the storage array and the labels inside the lid of the storage array.

  4. Remove the storage array.

    For the procedure on how to remove an storage array, see the Sun StorEdge MultiPack Storage Guide.

  5. Identify the disk drives that you need to remove from the cluster.

    # cfgadm -al

  6. On all nodes, remove references to the disk drives that were in the storage array. This storage array is the storage array that you removed in Step 4.

    # cfgadm -c unconfigure cN::dsk/cNtXdY
# devfsadm -C
# scdidadm -C

  7. If you plan to remove a host adapter that has an entry in the nvramrc script, delete the references to the host adapters in the nvramrc script.

    Note - If there are no other parallel SCSI devices connected to the nodes, you can delete the contents of the nvramrc script and, at the OpenBoot PROM, set setenv use-nvramrc? false.

  8. If necessary, remove any unused host adapters from the nodes.

    For the procedure on how to remove a host adapter, see the documentation that shipped with your host adapter and node.

ProcedureHow to Replace a SCSI Cable

Use this procedure to replace a failed SCSI cable in a running cluster.

  1. Is one of the disks in the storage array a quorum device? This array is the array that is attached to the cable you are replacing.

    # scstat -q

    • If no, skip to Step 3

    • If yes, relocate that quorum device to another suitable storage array

      For procedures on how to add and remove quorum devices, see your Sun Cluster system administration documentation.

  2. Detach the submirror(s) on the storage array.

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

  3. Replace the SCSI cable.

  4. Reattach the submirror(s) on the storage array.

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

  5. (Optional) Did you relocate the quorum device in Step 1?

    • If no, this step completes the procedure

    • If yes, relocate the quorum device function back to this storage array

      For procedures on how to add and remove quorum devices, see your Sun Cluster system administration documentation.

 		 
 
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