Use the Overview page to view general information about a z/VM
virtual server. You can also change the name and description
for the z/VM virtual server.
Introduction
Most
of the parameters shown on this page cannot be changed. They are set on the
virtual server template on which the z/VM virtual server is based.
Fields
- z/VM Virtual Server
- Name that z/VM Center uses for the z/VM virtual server. The default is
made up of two parts:
- The z/VM system ID
- A z/VM user ID. To z/VM, the z/VM virtual server is the guest virtual
machine with this user ID.
You can change the default by typing any name that is
meaningful to you. Changing this name does not change the IDs used by z/VM.
- Status
- Indication of the system status:

- A green upward-pointing triangle indicates that the virtual hardware is
available and running.

- A red downward-pointing triangle indicates that the virtual hardware is
unavailable.

- A grey square with a question mark indicates that the status of the virtual
hardware cannot be determined. Click Refresh to obtain
the current status.
You can activate a z/VM virtual server that is unavailable
and you can deactivate a z/VM virtual server that is running. To change the
status of a z/VM virtual server, select and right-click it
in the z/VM System resource tree; then click Activate or Deactivate,
as applicable.
- User ID
- A z/VM user ID. To z/VM, the z/VM virtual server is the guest
virtual machine with this user ID. You cannot edit this field.
- Password
- Toggles between hiding and showing the directory password
for the user ID in the User ID field.
This password
is applicable only for installations that do not use Resource Access Control
Facility (RACF) for security. You need this password only if you want to use
a 3270 terminal to log on to the z/VM guest virtual machine with the user
ID of the User ID field.
- User Class
- Defines the privileges that the z/VM virtual server has on
the z/VM system. Consists of one or more characters where
each character can occur once only. The characters must be
uppercase alphabetic (A-Z) characters or numeric characters in the range 1-6.
Classes
A-H are predefined but can be modified by a system administrator for a particular
installation; the remaining classes are always installation-specific. Refer to CP Planning and Administration,
SC24-6083, chapter 16 "Redefining Command Privilege Classes" for details.
- Running OS
- Name of the operating system instance that is running on the z/VM virtual
server. "Inactive" indicates that no operating system is running or that z/VM Center is not aware of an operating system on the
z/VM virtual server. You cannot edit this field.
- Assigned Share
- Proportion of processor cycles guaranteed to the z/VM virtual server in
times of resource contention. The assigned share can be:
- absolute:
- Percentage of all cycles available to the z/VM virtual servers that are
provided by the z/VM system.
- relative:
- Percentage as compared to an equal share among all z/VM virtual servers.
100% would represent an average share.
You cannot edit this field.
- Maximum Share
- Maximum proportion of processor cycles that z/VM can assign
to the z/VM virtual server. The maximum can be:
- absolute:
- Percentage of all cycles available to the z/VM virtual servers that are
provided by the z/VM system.
- relative:
- Percentage as compared to an equal share among all z/VM virtual servers.
100% would limit the consumption to an average share.
This field is blank if no maximum share has been set. You cannot
edit this field.
- Limit
- Determines how the limit of the Maximum Share field
is applied:
- soft
- Means that the limit is applied only if there is contention for processor
capacity.
- hard
- Means that the limit is applied regardless of free processor capacity.
This field is blank if the maximum share field
is blank. You cannot edit this field.
- Description
- Optional: You can type a description of the z/VM virtual server
in this field. You can edit and extend an existing description.
- Save
- Saves all changes you have made on any of the
notebook pages.
- Refresh
- Refreshes all fields on all notebook
pages with their current values and discards any changes you have not already
saved.