IBM 8248-L4T, Manual

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13. The following conditions must be met before you can start device parity protection.
v
If there are enough drives available to create a new parity set, the drives are eligible for Start
Device Parity Protection operation and not for the Include Device Parity Protection operation.
v
All drives in a parity set must be the same capacity with a minimum number of three or four
drives and maximum of 10 or 18 drives in the resulting parity set, depending on the drive type.
v
Not all drives attached to an advanced function input/output processor have reported to the
system. Repeat the operation.
v The type or model of the drives cannot be used for the requested operation.
When these conditions are met, press F12 to return to the Work with Disk Configuration display.
14.
Select
Include unit in device parity protection
on the Work with disk configuration display. Press
Enter.
15. On the Include Disk Units in Device Parity Protection display, select the disk drives to be included
in Device Parity Protection. Type
1
in the Option column. Press Enter.
16.
Press Enter to confirm your choice. The configuration starts and might take 30 - 60 minutes to
complete.
17. When the device parity protection is complete, the message “Selected drives have been included
successfully” is shown on the Work with device parity protection display. Press F12.
18. Select Display disk configuration on the Work with disk configuration display. Press Enter.
19. Select Display disk configuration status on the Display disk configuration display.
20. If you have more than one ASP, determine the auxiliary storage pool (ASP) to which you want to
add the drive.
21.
Press F12 twice to get to the Work with Disk Units display.
22. Select Work with disk configuration on the Work with Disk Units display. Press Enter.
23.
Select the option to add units to ASPs and balance data on the Work with disk configuration display.
Press Enter.
24. Specify the number of the ASP to which you want to add the drive. The system ASP is ASP 1 . Press
Enter.
Notes:
a. If ASP is mirror protected, disk drives must be added in pairs of the same size.
b. When one or more pairs of disk drives are added to a mirrored ASP, they automatically become
mirror protected.
c. To start mirrored protection on an ASP, refer to Recovering your system in the IBM i Information
Center.
Go to IBM i Information Center website (www.ibm.com/systems/i/infocenter) and select from
the following options:
v
If you select V6R1, expand IBM i 6.1 Information Center > Systems management > Backup
and recovery > Recovering your system
v
If you select V5R4, expand i5/OS Information Center > Systems management > Backup and
recovery > Backing up and recovering your system > Recovering your system
25. The Confirm Add Units displays showing the configuration your system must have when the add
operation completes.
Note:
If you have selected the wrong ASP, press F12 to change your options. Press the Enter key to
continue. The add process takes several minutes to complete.
26. When the message
Selected units have been added successfully
is shown, press F3 three times
and press Enter to return to the Main menu display.
27.
If you have a printer, print the configuration list. A service provider might refer to the configuration
list in the future.
Related tasks for disk drives or solid-state drives
105