Installing and Maintaining a Sun StorEdge A5x00 Array
This chapter contains the procedures to install and maintain a Sun StorEdge™ A5x00 array in a Sun™ Cluster environment.
This chapter contains the following procedures.
For conceptual information on multihost disks, see your Sun Cluster concepts documentation.
Installing Storage Arrays
This section describes the procedure for an initial installation of a storage array.
How to Install a Storage Array
Use this procedure to install a storage array. To add storage arrays to an existing cluster, use the procedure in How to Add the First Storage Array or How to Add a Subsequent Storage Array. Perform the steps in this procedure in conjunction with the procedures in the Sun Cluster software installation documentation and your server hardware manual.
Install host adapters in the nodes that are to be connected to the storage array.
For the procedure about how to install host adapters, see the documentation that shipped with your network adapters and nodes.
Note - To ensure maximum redundancy, put each host adapter on a separate I/O board, if possible.
Cable, power on, and configure the storage array.
Figure 1-1 shows a sample storage array configuration.
For more information on cabling and configuring storage arrays, see the Sun StorEdge A5000 Installation and Service Manual.
Note - You must use FC switches when installing storage arrays in a partner-group configuration. If you want to create a storage area network (SAN) by using two FC switches and Sun SAN software, see "SAN Solutions in a Sun Cluster Environment" in Sun Cluster 3.x Hardware Administration Manual for more information.
Figure 1-1 Installing a Sun StorEdge A5200 Storage Array in a Full-Loop Configuration
Check the revision number for the storage array's controller firmware. If necessary, install the most recent firmware.
For more information, see the Sun StorEdge A5000 Product Note.
Where to Go From Here
To install software, follow the procedures in Sun Cluster software installation documentation.
Maintaining Storage Arrays
This section describes the procedures about how to maintain a storage array. Table 1-1 lists these procedures.
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 1-1 Task Map: Maintaining a Storage Array
Task | Information |
|---|---|
Add a disk drive. | |
Replace a disk drive. | |
Remove a disk drive. | |
Add a storage array. | How to Add the First Storage Array or |
Replace a storage array. | |
Remove a storage array. |
How to Add a Disk Drive
Use this procedure to add a disk drive to a running cluster. Perform the steps in this procedure in conjunction with the procedures in the Sun Cluster system administration documentation and your server hardware manual.
For conceptual information on quorums, quorum devices, global devices, and device IDs, see your Sun Cluster concepts documentation.
On one node that is connected to the storage array, install the new disk.
Install the new disk drive. Press the Return key when prompted. You can insert multiple disk drives at the same time.
# luxadm insert_device enclosure,slot
On all other nodes that are attached to the storage array, probe all devices. Write the new disk drive to the /dev/rdsk directory.
The amount of time that the devfsadm command requires to complete depends on the number of devices that are connected to the node. Expect at least five minutes.
# devfsadm
Ensure that entries for the disk drive have been added to the /dev/rdsk directory.
# ls -l /dev/rdsk
If necessary, partition the disk drive.
You can use either the format(1M) command or copy the partitioning from another disk drive in the storage array.
From any node in the cluster, 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 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
Verify that a device ID (DID) has been assigned to the disk drive.
#scdidadm -l
Note - The DID that was assigned to the new disk drive might not be in sequential order in the storage array.
Perform necessary volume management administration actions on the new disk drive.
For more information, see your Solstice DiskSuite/Solaris Volume Manager or VERITAS Volume Manager documentation.