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Sun Cluster 3.0 U1 Hardware Guide

How to Add a StorEdge D1000 Disk Array to a Running Cluster

Use this procedure to install a StorEdge D1000 disk array in a running cluster. Perform the steps in this procedure in conjunction with the procedures in the Sun Cluster 3.0 U1 System Administration Guide and your server hardware manual.

For conceptual information on multi-initiator SCSI and device IDs, see the Sun Cluster 3.0 U1 Concepts document.

  1. Ensure that each device in the SCSI chain has a unique SCSI address.

    The default SCSI address for host adapters is 7. Reserve SCSI address 7 for one host adapter in the SCSI chain. This procedure refers to the host adapter you choose for SCSI address 7 as the host adapter on the "second node."

    To avoid conflicts, in Step 7 you change the scsi-initiator-id of the remaining host adapter in the SCSI chain to an available SCSI address. This procedure refers to the host adapter with an available SCSI address as the host adapter on the "first node." Depending on the device and configuration settings of the device, either SCSI address 6 or 8 is usually available.

    Note -

    Even though a slot in the disk array might not be in use, do not set the scsi-initiator-id for the first node to the SCSI address for that disk slot. This precaution minimizes future complications if you install additional disk drives.

    For more information, see the OpenBoot 3.x Command Reference Manual and the labels inside the storage device.

  2. Shut down and power off the first node.


    # scswitch -S -h nodename
# shutdown -y -g0 -i0

    For more information on shutdown procedures, see the Sun Cluster 3.0 U1 System Administration Guide.

  3. Install the host adapters in the first node.

    For the procedure on installing host adapters, see the documentation that shipped with your host adapters and nodes.

  4. Connect the differential SCSI cable between the node and the StorEdge D1000 disk array, as shown in Figure 5-2.

    Make sure that the entire SCSI bus length to each enclosure is less than 25 m. This measurement includes the cables to both nodes, as well as the bus length internal to each enclosure, node, and host adapter. Refer to the documentation that shipped with the enclosure for other restrictions about SCSI operation.

    Figure 5-2 Example of a StorEdge D1000 Disk Array Mirrored Pair

    Graphic

  5. Power on the first node and the StorEdge D1000 disk arrays.

    For the procedure on powering on a StorEdge D1000 disk array, see the Sun StorEdge A1000 and D1000 Installation, Operations, and Service Manual.

  6. Find the paths to the SCSI host adapters. 


    {0} ok show-disks

    Identify and record the two controllers that are to be connected to the StorEdge D1000 disk arrays, and record these paths. Use this information to change the SCSI addresses of these controllers in the nvramrc script in Step 7. Do not include the /sd directories in the device paths.

  7. Edit the nvramrc script to change the scsi-initiator-id for the host adapters of the first node.

    For a list of Editor nvramrc editor and keystroke commands, see Appendix B, NVRAMRC Editor and NVEDIT Keystroke Commands.

    The following example sets the scsi-initiator-id to 6. The OpenBoot PROM Monitor prints the line numbers (0:, 1:, and so on).

    Caution - Caution -

    Insert exactly one space after the double quote and before scsi-initiator-id. 


    {0} ok nvedit 
0: probe-all
1: cd /sbus@1f,0/QLGC,isp@3,10000 
2: 6 encode-int " scsi-initiator-id" property 
3: device-end 
4: cd /sbus@1f,0/ 
5: 6 encode-int " scsi-initiator-id" property 
6: device-end 
7: install-console 
8: banner [Control C] 
{0} ok

  8. Store the changes.

    The changes you make through the nvedit command are recorded on a temporary copy of the nvramrc script. You can continue to edit this copy without risk. After you have completed your edits, save the changes. If you are not sure about the changes, discard them.

    • To store the changes, type:


      {0} ok nvstore
{0} ok

    • To discard the changes, type:


      {0} ok nvquit
{0} ok

  9. Verify the contents of the nvramrc script you created in Step 7, as shown in the following example.

    If the contents of the nvramrc script are incorrect, use the nvedit command to make corrections.


    {0} ok printenv nvramrc
nvramrc =             probe-all
                      cd /sbus@1f,0/QLGC,isp@3,10000
                      6 encode-int " scsi-initiator-id" property
                      device-end 
                      cd /sbus@1f,0/
                      6 encode-int " scsi-initiator-id" property
                      device-end  
                      install-console
                      banner
{0} ok

  10. Instruct the OpenBoot PROM Monitor to use the nvramrc script, as shown in the following example: 


    {0} ok setenv use-nvramrc? true
use-nvramrc? = true
{0} ok

  11. Boot the first node, and wait for it to join the cluster.


    {0} ok boot -r

    For more information, see the Sun Cluster 3.0 U1 System Administration Guide.

  12. On all nodes, verify that the DIDs have been assigned to the disk drives in the StorEdge D1000 disk array.


    # scdidadm -l

  13. Shut down and power off the second node.


    # scswitch -S -h nodename
# shutdown -y -g0 -i0

    For more information on shutdown procedures, see the Sun Cluster 3.0 U1 System Administration Guide.

  14. Install the host adapters in the second node.

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

  15. Connect the StorEdge D1000 disk array to the host adapters by using differential SCSI cables (see Figure 5-3).

    Figure 5-3 Example of a StorEdge D1000 Disk Array Mirrored Pair

    Graphic

  16. Power on the second node, but do not allow it to boot. If necessary, halt the system to continue with OpenBoot PROM (OBP) Monitor tasks.

  17. Verify that the second node checks for the new host adapters and disk drives.


    {0} ok show-disks

  18. Verify that the scsi-initiator-id for the host adapters on the second node is set to 7.

    Use the show-disks command to find the paths to the host adapters that are connected to these enclosures. Select each host adapter's device tree node, and display the node's properties to confirm that the scsi-initiator-id for each host adapter is set to 7.


    {0} ok cd /sbus@1f,0/QLGC,isp@3,10000
{0} ok .properties
scsi-initiator-id        00000007 
...

  19. Boot the second node, and wait for it to join the cluster.


    {0} ok boot -r

  20. On all nodes, verify that the DIDs have been assigned to the disk drives in the StorEdge D1000 disk array.


    # scdidadm -l

  21. Perform volume management administration to add the disk drives in the array to the volume management configuration.

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