Chapter 1

Installing and Maintaining Sun StorEdge 3310 SCSI RAID Array

This chapter describes the procedures about how to install, configure, and maintain Sun StorEdge™ 3310 RAID arrays in a Sun™ Cluster environment.

Read the entire procedure before you perform any steps within a procedure in this chapter. If you are not reading an online version of this document, ensure that you have the books listed in Preface available.

This chapter contains the following procedures.

Installing RAID Storage Arrays

This section contains the procedure for an initial installation of storage arrays in a new cluster configuration. To add storage arrays to an operating cluster, use the procedure, How to Add a RAID Storage Array.

Note - The storage array must be mirrored with another storage array to ensure high availability.

How to Install a RAID Storage Array

Use this procedure to install and configure RAID storage arrays before installing the Solaris operating environment and Sun Cluster software on your nodes.

This procedure assumes that the hardware is not connected.

Note - To attach a JBOD storage array to a RAID storage array as an expansion unit, attach the JBOD storage array before connecting the RAID storage array to the nodes. For more information, see the Sun StorEdge 3310 SCSI Array Installation, Operation, and Service Manual.

Install the host adapters in the nodes that connect to the RAID storage array.
For the procedure about how to install host adapters, see the documentation that shipped with your host adapters and nodes.
Cable the RAID storage array to the nodes.
Ensure the cable does not exceed bus length limitations. For more information on bus length limitations, see the documentation that shipped with your hardware.

For the procedure about how to cable the storage arrays, see the Sun StorEdge 3310 SCSI Array Installation, Operation, and Service Manual.
RAID storage arrays have redundant power inputs. Connect each power cord from the RAID storage array to a different power source.
Different RAID storage arrays can share power sources.
Install the Solaris operating environment, then apply any required Solaris patches.
For software installation procedures, see your Sun Cluster software installation documentation.

Note - For the current list of patches that are required for the Solaris operating environment, refer to SunSolve. SunSolve is available online to Sun service providers and to customers with SunSolve service contracts at the SunSolve site: http://sunsolve.sun.com.

If necessary, install the qus driver and appropriate driver patches.
For driver installation procedures, see the Sun StorEdge PCI Dual Ultra 3 SCSI Host Adapter Release Notes.
If necessary, upgrade the controller firmware.

Set up and configure the RAID storage arrays with logical units (LUNs).
For the procedure about how to set up the storage array with LUNs, see How to Create and Map a LUN.

Note - If you want to use the Configuration Service Console, perform this step after Step 8.

(Optional) Install the Configuration Service.
For the procedure about how to install the Configuration Service, see the Sun StorEdge 3310 SCSI Configuration Service User Guide.
Install the Sun Cluster software and volume management software.
For software installation procedures, see the your Sun Cluster software installation documentation.

Where to Go From Here

To continue with Sun Cluster software and data services installation tasks, see your Sun Cluster software installation documentation and your Sun Cluster data services collection.

Configuring RAID Storage Arrays

This product supports the use of hardware RAID and host-based software RAID. For host-based software RAID, this product supports RAID levels 0+1 and 1+0.

Note - When you use host-based software RAID with hardware RAID, the hardware RAID levels you use affect the hardware maintenance procedures due to volume management administration.

If you use hardware RAID level 1, 3, or 5, you can perform most maintenance procedures in Maintaining RAID Storage Arrays without volume management disruptions. If you use hardware RAID level 0, some maintenance procedures in Maintaining RAID Storage Arrays require additional volume management administration because the availability of the LUNs is impacted.

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.

This section describes the procedures about how to configure a RAID storage array after installing Sun Cluster software. Table 1-1 lists these procedures.

To configure a RAID storage array before you install Sun Cluster software, follow the same procedure that you use in a noncluster environment. For procedures about how to configure RAID storage arrays before you install Sun Cluster, see the Sun StorEdge 3310 SCSI Array Installation, Operation, and Service Manual.

Table 1-1 Task Map: Configuring Disk Drives

Task	Information
Create a logical unit (LUN).	How to Create and Map a LUN
Remove a LUN.	How to Unmap and Delete a LUN