In the device management and information commands of VM2000, pubsets can be addressed by means of their catalog ID (cat-id, identical to the pubset name) or their pubres device.
The operand below determines the pubset in all the VM2000 commands concerned:
UNITS = *PUBSET-DEVICES(PUBSET = <cat-id 1..4> / *BY-PUBRES-DEVICE(UNIT = <alphanum-name 2..2> / <x-text 4..4>) )
This operand corresponds to the operand which is used in the BS2000 configuration commands, see the section "VM2000 in the guest systems".
VM2000 determines the devices which belong to the pubset and executes the command for all the devices of the pubset. This makes device management simpler because the individual devices of a pubset no longer need to be determined and assigned or removed individually.
In the context of VM2000 device management, the term “pubset” is used for short in this manual when referring to the devices of a pubset. When necessary, the term “pubset devices” is used.
The VM2000 administrator can also manage the pubset devices individually. However, individually assigned devices are not recognized as a pubset by VM2000 and the adjustments by VM2000 in the case of or after a pubset reconfiguration (see "Pubset reconfiguration") are then not available.
Pubres device (system disk of a pubset)
In BS2000 the pubres device is the disk device containing the metadata of an SF pubset. For simplicity’s sake, in VM2000 device management a “pubres device” is also understood as the volres device of the control volume set in an SM pubset.
In VM2000 device management the pubres device can assume the PUBRES-FOR-ASSIGNMENT (see "Explicit pubset assignment and removal") and PUBRES-FOR-ATTRIBUTES (see "Implicit pubset assignment and release") attributes.
Devices of a pubset
VM2000 determines the pubset devices from the pubset’s metadata.
When the pubset is addressed by way of its catalog ID, the pubset and its pubres device must also be entered in the monitor system’s MRS catalog.
In order to determine the pubset devices, VM2000 briefly assigns the pubres device of an SF pubset or all volres devices of an SM pubset to the monitor VM. VM2000 then attaches these devices (/ATTACH-DEVICE) in order to read the list of pubset devices which is stored in its SVL (Standard Volume Label).
Access to a pubset
Access to a pubset by a guest system is only possible after the corresponding assignment of pubset devices to the VM, after the pubset devices have been attached, and after the pubset in the guest system has been imported.
Home pubset
 | On SU /390, the devices of the home pubset are automatically assigned explicitly to the monitor VM at startup of the monitor system. |
 | On SU x86, the devices of the home pubset must be assigned explicitly via the SE manager before the monitor system is started up, see "Configuration using the SE Manager (SU x86)". |
The devices of the home pubset cannot be removed from the monitor VM.
Its home set must be assigned explicitly and exclusively to another VM before the guest system is started.
Accounting for pubsets
The use of pubsets if displayed implicitly via the use of the pubset devices in the VM2000 accounting record for devices (see "Accounting record for devices").