How to Add a Disk Drive

Adding a disk drive enables you to increase your storage space after a storage array has been added to your cluster.

(Sun StorEdge Multipack Enclosures Only) SCSI-reservations failures have been observed when clustering storage arrays that contain a particular model of Quantum disk drive: SUN4.2G VK4550J. Do not use this particular model of Quantum disk drive for clustering with storage arrays.

If you must use this model of disk drive, you must set the scsi-initiator-id of Node A to 6. If you use a six-slot storage array, you must set the storage array for the 9-through-14 SCSI target address range. For more information, see the Sun StorEdge MultiPack Storage Guide.

Before You Begin

This procedure relies on the following prerequisites and assumptions.

• Your storage array contains an empty disk slot.

• Your nodes are not configured with dynamic reconfiguration functionality.

  If your nodes are configured for dynamic reconfiguration, see the Sun Cluster system administration documentation, and skip steps that instruct you to shut down the node.

Steps

1. Locate an empty disk slot in the storage array for the disk drive you are adding.

   Identify the empty disk slot and note the target number. Refer to your storage array documentation.

2. Install the disk drive.

   For the procedure about how to install a disk drive, see your storage array documentation.

3. On all nodes that are attached to the storage array, configure the disk drive.

   # cfgadm -c configure cN

4. On all nodes that are attached to the storage device, probe all devices and write the new disk drive to the /dev/rdsk directory.

   # devfsadm

   Depending on the number of devices that are connected to the node, the devfsadm command can require at least five minutes to complete.

5. On all nodes, verify that the entries for the disk drive have been added to the /dev/rdsk directory.

   # ls -l /dev/rdsk

6. If necessary, use the format(1M) command or the fmthard(1M) command to partition and label the disk drive.

7. From any node, update the global device namespace.

   If a volume management daemon such as vold is running on your node, and you have a CD-ROM drive that is connected to the node, a device busy error might be returned even if no disk is in the drive. This error is an expected behavior.

   # scgdevs

8. On one node, verify that a device ID has been assigned to the disk drive.

   The new device ID that is assigned to the new disk drive might not be in sequential order in the storage array.

   # scdidadm -L

9. Perform volume management administration to add the new disk drive to the configuration.

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

10. If you want this new disk drive to be a quorum device, add the quorum device.

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