Adding Disk Drives To The Storage System - HP 6400/8400 User Manual

NOTE: If the storage system contains disk drives of different capacities, the HP SSSU procedures
used do not guarantee that disk drives of the same capacity will be exclusively added to the same
disk group. If you need to restore an array configuration that contains disks of different sizes and
types, you must manually recreate these disk groups. The controller software and the CAPTURE
CONFIGURATION command are not designed to automatically restore this type of configuration.
For more information, see the HP Storage System Scripting Utility Reference.
Example 1 Saving configuration data using HP SSSU on a Windows host
To save the storage system configuration:
1. Double-click the HP SSSU desktop icon to run the application. When prompted, enter Manager
(management server name or IP address), User name, and Password.
2. Enter LS SYSTEM to display the EVA storage systems managed by the management server.
3. Enter SELECT SYSTEM system name, where system name is the name of the storage
system.
4. Enter CAPTURE CONFIGURATION pathname\filename, where pathname identifies the
location where the configuration files will be saved, and filename is the name used as the
prefix for the configurations files: for example, CAPTURE CONFIGURATION
c:\EVAConfig\LargeEVA
5. Enter EXIT to close the command window.
Example 2 Restoring configuration data using HP SSSU on a Windows host
To restore the storage system configuration:
1. Double-click the HP SSSU desktop icon to run the application.
2. Enter FILE pathname\filename, where pathname identifies the location where the
configuration files are to be saved and filename is the name of the first configuration file: for
example, FILE c:\EVAConfig\LargeEVA_Step1A.txt
3. Repeat the preceding step for each configuration file.

Adding disk drives to the storage system

As your storage requirements grow, you may be adding disk drives to your storage system. Adding
new disk drives is the easiest way to increase the storage capacity of the storage system. Disk
drives can be added online without impacting storage system operation.
Consider the following best practices to improve availability when adding disks to an array:
Set the add disk option to manual.
Add disks one at a time, waiting a minimum of 60 seconds between disks.
Distribute disks vertically and as evenly as possible to all disk enclosures.
Unless otherwise indicated, use the SET DISK_GROUP command in the HP Storage System
Scripting Utility to add new disks to existing disk groups.
Add disks in groups of eight.
For growing existing applications, if the operating system supports virtual disk growth, increase
virtual disk size. Otherwise, use a software volume manager to add new virtual disks to
applications.
See the disk drive replacement instructions for the steps to add a disk drive. See
instructions" (page 75)
42 EVA6400/8400 operation
for a link to this document.
"Replacement