How to Add a StorEdge A3500

Use this procedure to add an StorEdge A3500 disk array to an existing cluster.

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 will 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. SCSI address 6 is usually available.

   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 -g 0

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

3. Install the host adapters in the 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 disk array as shown in Figure 7-2.

   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 disk array for other restrictions regarding SCSI operation.

   Figure 7-2 Example of a StorEdge A3500 disk array

   
   

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

6. Find the paths to the SCSI host adapters.

   {0} ok show-disks

   Identify and record the two controllers that will be connected to the disk arrays, and record these paths. Use this information to change the SCSI addresses of these controllers in the nvramrc script. 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 -

   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 done 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.

   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:

    {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 Sun Cluster 3.0 System Administration Guide.

12. On all nodes, verify that the DIDs have been assigned to the StorEdge A3500 LUNs.

    # scdidadm -l

13. Shut down the second node.

    # scswitch -S -h nodename # shutdown -y -g 0

14. Power off the second node.

15. Install the host adapters in the second node.

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

16. Connect the disk array to the host adapters using differential SCSI cables as shown in Figure 7-3.

    Figure 7-3 Example of a StorEdge A3500 disk array

    
    

17. Without allowing the node to boot, power on the second node. If necessary, abort the system to continue with OpenBoot PROM Monitor tasks.

18. Verify that the second node sees the new host adapters and disk drives.

    {0} ok show-disks

19. 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 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 ...

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

    {0} ok boot -r

21. On all nodes, verify that the DIDs have been assigned to the StorEdge A3500 LUNs.

    # scdidadm -l

22. Install the RAID Manager.

    For the procedure on installing RAID Manager, see Sun StorEdge RAID Manager Installation and Support Guide.

23. Install StorEdge A3500 disk array patches.

    For the location of patches and installation instructions, see Sun Cluster 3.0 Release Notes.

24. One at a time, reboot each node into cluster mode.

    # boot

25. Upgrade the StorEdge A3500 disk array controller firmware.

    For the StorEdge A3500 disk array controller firmware version number and boot level, see Sun Cluster 3.0 Release Notes. For the procedure on upgrading the StorEdge A3500 controller firmware, see Sun StorEdge RAID Manager User's Guide.

Where to Go From Here

To create a LUN from unassigned disk drives, see "How to Create a LUN".