Create zSeries volume — Define alias assignments

Use this page to define alias assignments for the specified volumes.

Introduction

The information contained here is presented for both of the ways that the Define alias assignments page can be displayed. First, the fields are listed for the page when an LCU has been specified. Second, the fields are listed for the page when the LCUs are either multiple or non-specified.

Menu path

Real-time manager or Simulated manager > Configure storage > zSeries > Volumes – zSeries > Select Action: Create... > Go

Fields

For volumes created in a specified LCU

LCU
The logical control unit, based on user selection (00 to FF).
Available addresses
The quantity of available addresses in the LCU (0 to 256).
Select
Select the appropriate check boxes.
Volume Number
The volume number (for example, 1E3B).
Nickname
The user-defined nickname.
Volume Type
The volume type (3380 Mod 2, 3380 Mod 3, 3390 Mod 3, 3390 Mod 9, or Custom 3390).
Capacity
The capacity in cylinders.
Aliases: Bases
The quantity of aliases for this base volume.
Starting address
The first available address in the list. This value reflects a choice made when defining the alias address allocation policy.
Ascending/ Descending
If you defined a default in the address allocation policy, that value is displayed here as the default.
Aliases
The quantity of aliases per selected volumes. This value is a function the available addresses for the selected LCU. You can enter a decimal value here to represent fractions of the number of aliases per volume. For example:
  • A value of 0.25 indicates 1 alias to every 4 base volumes
  • A value of 1 indicates 1 alias to every 1 base volume
Per Volumes
The quantity of aliases per volume. A valid value is a function of the available addresses for the selected LCU.
Add aliases
Required if the value in the Aliases Per Volumes fields is greater than zero. For all of the aliases created, you must select the Add Aliases button in order to proceed in the wizard. When you have added the alias, you can add more aliases by inputting another value in the Aliases Per Volumes fields and selecting more volumes, or by keeping the same value and just selecting the button again. You can repeat this task until you are satisfied with the alias assignments.
Note: If you want to add aliases, the number of base volumes must be greater than 0.
Remove aliases
Enabled when you select any volumes with aliases. This button removes the assigned aliases from the designated volumes.

For volumes created in non-specified LCUs

Quantity of LCUs
The user-defined quantity of LCUs for the volumes being created.
Select
The check boxes associated with the LCUs.
LCU Number
The logical control unit number (00 to FF).
Volume Quantity
The quantity of volumes to be created in this LCU
Available Addresses
The quantity of available addresses in the LCU (0 to 254).
Starting address
A starting address that is common to all the LCUs selected from the table. If no starting address is common to all the selected LCUs, the starting address is determined by the application for each LCU.
Ascending/ Descending
The default is a value defined in the address allocation policy.
Aliases
The quantity of aliases per selected volumes. This value is a function the available addresses for the selected LCU. You can enter a decimal value here to represent fractions of the number of aliases per volume. For example:
  • A value of 0.25 indicates 1 alias to every 4 base volumes
  • A value of 1 indicates 1 alias to every 1 base volume
Per Volumes
The quantity of aliases per volume. A valid value is a function of the available addresses for the selected LCU.
Add aliases
Required if the value in the Aliases Per Volumes fields is greater than zero. For all of the aliases created, you must select the Add Aliases button in order to proceed in the wizard. When you have added the alias, you can add more aliases by inputting another value in the Aliases Per Volumes fields and selecting more volumes, or by keeping the same value and just selecting the button again. You can repeat this task until you are satisfied with the alias assignments.
Note: If you want to add aliases, the number of base volumes must be greater than 0.
Remove aliases
Enabled when you select any volumes with aliases. This button removes the assigned aliases from the designated volumes.
Related concepts
Logical volumes
Related tasks
Creating zSeries volumes
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