Adding a new IOA

This checklist shows the sequence of tasks that you use to add a new IOA and new disk units to your system.

Before you begin

Use this checklist if you plan to protect some or all of the new disks with device parity protection. You can use this procedure whether you have mirrored protection on your system because you start device parity protection before you add the disk units to a disk pool. If you do have mirrored protection and you are adding disks that do not have device parity protection, you must add them in pairs that have equal capacities.

Note: If you do not plan to start device parity protection for any of the new disks, use the procedure in Adding disk units without disk protection to add the new disks.
Attention: When you perform the tasks in this checklist, the system moves large amounts of data. Make sure that you have completely saved your system in the event that you need to recover from an error situation.

Print a copy of this checklist. Check off the configuration tasks as you or the service representative perform them. This checklist provides an important record of your actions. It may help you diagnose any problems that occur.

Most tasks in the checklist include links to other topics. Refer to these topics if you need more information about how to perform a particular task.

Task What to do Where to learn more
1.___ Install the new IOA in the system. This is normally done by a service representative. Evaluating the current configuration
2.___ Physically attach disk units to the new IOA using the Install Disk Unit wizard, which you can access from the Disk Units Graphical View window. Evaluating the current configuration
3.___ Use the Add Disk Unit wizard to add non-configured disks to the correct disk pools. Use the option to start device parity protection. Adding a disk unit to a disk pool
4.___ If you want a different storage threshold for any disk pool, change it. The default storage threshold for each disk pool is 90%. Setting the threshold of a disk pool
5.___ You may want to restart to the dedicated service tools (DST) mode in order for the device parity protection to take effect. Device parity protection
6.___ Wait until your system completely restarts.  
7.___ Verify that your disk configuration is correct. Evaluating the current configuration
8.___ Print your disk configuration to have available in case a recovery situation occurs. Printing your disk configuration