Information services of device management: Meanings of the output values of SHOW commands

The NDM information services provide the operator with certain output fields appropriate to the specified command and the desired scope of information. The various output formats are described with the command concerned. The meaning of the output fields is described below in alphabetical order.

Information is supplied for the following commands:

Command	Abbreviated name used in the table
SHOW-DEVICE-CONFIGURATION	SH-DEV-CONF
SHOW-DEVICE-DEPOT	SH-DEV-DEPOT
SHOW-DEVICE-STATUS	SH-DEV-STA
SHOW-DISK-DEFAULTS	SH-DISK-DEF
SHOW-DISK-STATUS	SH-DISK
SHOW-MOUNT-PARAMETER	SH-MOUNT
SHOW-RESOURCE-ALLOCATION	SH-RES
SHOW-RESOURCE-REQUESTS	SH-RES-REQ
SHOW-TAPE-STATUS	SH-TAPE

Keyword

Meaning

Used in
command

ACCESS

WRITE = Read and write access to the disk is permitted.

ALL = The disk is not yet allocated. Only when the disk is allocated is ACCESS=WRITE set.

SH-DISK (INF=PAR)

ACTION

Shows which (re)mount operation is being performed for a volume by volume monitoring. This can have been initiated by one of the following actions:

• operator intervention(inadvertently dismounting a volume that is in use)

• commands (DETACH-DEVICE, CHANGE-DISK-MOUNT ACTION=MOVE...)

• Device Error Recovery (DER) e.g. with INOP

• user request (mount message for volumes that have not yet been mounted)

The following states are possible:

CANCELLED:	The tape or disk is permanently locked; the interrupt is not cleared.
DISMOUNT:	A remount message has not been received for the same volume on another device, or a remount, mount or premount message has not been received for another volume on the same device.
INOP:	The device is temporarily unavailable (inoperable).
MOUNT:	The response to a mount message is not yet sent for the relevant volume.
NO ACTION:	No interrupt.
NO DEVICE:	There no longer exists a device allocation for a volume owing to a previous reconfiguration command (DETACH-DEVICE, REMOVE-DEVICE-CONFIGURATION); processing of the volume is interrupted until a standby device is provided.
POSITION:	The tape in use is being repositioned.
PREMOUNT:	The response to a PREMOUNT message has not been received for the relevant volume.
RECOVER:	An interrupt procedure which is not specified in more detail is being carried out for the volume in use.
REMOUNT:	The volume is being remounted.
SVL-UPDATE:	The system allocation log is being stored on disk.
SNATCHED:	The allocation which was passed to another task has been revoked by the device owner.
UNLOCK:	An UNLOCK job for the removal of a system ID stored in the SVL is being executed.
WP-MISSING:	The write-enable ring for a tape is to be mounted or the write protection for a disk is to be canceled.

SH-RES
SH-DEV-STA
SH-DISK
SH-TAPE

ADMISSION-TIME

Date and time of day at which the task entered the secure queue (yyyy-mm-dd hh:mm:ss)

SH-RES-REQ

ALIAS1
ALIAS2
ALIAS3
...
ALIAS7

Shows the mnemonic alias name of a PAV device in the format <mnemoname>-xy. Up to three alias names are possible.
The status indicator xy means:
x = P for “preferred” devices, F for FastDPAV devices or ’-’ for other devices
y = A for “active”, R for “ready” or N for “not ready”

SH-DEV-CONF (INF=PAV)

ALLOC

Indicates whether the disk is allocated.

• YES: Disk is allocated.
• NO: Disk is not currently allocated.

SH-DISK

ALLOCATE-TAPE

Indicates whether the system will execute the allocation of tapes already online without the support of the operator (without a mount message).

• YES: Premount, mount and remount messages are answered automatically by the system, provided the tape is recognized as online.
• NO: Premount, mount and remount messages must be answered by the operator.

SH-MOUNT

ASS[IGN]-TIME

For a private disk in the USE=DMS mode, this shows the time at which it is allocated or released (SH-DISK INF=PAR).

For SH-DISK-DEF, the value for ASSIGN-TIME shows the time of disk allocation or release for all disks for which this value has not been set explicitly.

SH-DISK (INF=PAR)
SH-DISK-DEF

ATT[ACH]

Number of devices in the “attached” state belonging to the device type specified in the output (independent of allocation)

SH-DEV-STA (INF=SUM)

AVAIL

Number of devices of the device type defined in the output which are still free (available)

SH-DEV-STA (INF=SUM)

BASE

Shows the mnemonic base name of a PAV device in the format <mnemo-name>-xy. The status indicator xy means:
x = P for “preferred” devices, F for FastDPAV devices or ’-’ for other devices
y = A for “active”, R for “ready” or N for “not ready”

SH-DEV-CONF (INF=PAV)

CAR

Shows the state of the CARTRIDGE-LOADER of the MTC devices from the point of view of BS2000. The state ascertained last is displayed. It is updated at ATTACH or during device selection.

The device's control panel may indicate a different operating mode, e.g. because device management sets its internal state to MANUAL when dismounting the magazine, or because the magazine has not been locked after mounting.

The following states are possible:

AUT	Automatic Mode
MAN	Manual Mode
ON	Devices of type 3590E: Device with volume stacker; the stacker is active
OFF	Devices of type 3590E: Device with volume stacker; the stacker is not active
RAN	Random Access Mode
SEQ	Sequential Access Mode

SH-TAPE (INF=CAR)

CONF-STATE

Configuration state of the specified device; serves as an indicator of the availability of the device. The following states are possible:

ATTACHED:

The device is available to the system for input/output. A distinction is made between ATT(EXplicitly) and ATT(IMplicitly).

ATTACHED *:

The device is attached but not assigned. The ROBAR product decides on the basis of the displayed state whether the mount request for a volume is to be permitted or rejected.

DETACHED:

The device is not available to the system for input/output. A distinction is made between DET(EXplicitly) and DET(IMplicitly).

DISABLED:

The FastDPAV alias device is not activated. It cannot be used for input/output.

ENABLED:

The FastDPAV alias device is activated and can be used for input/output.

ATT-PENDING:

The device is not yet available to the system for input/output.

DET-PENDING:

The device is declared unavailable for the system at the end of usage.

INVALID:

The device cannot be accessed via any path and cannot be
reconfigured.

For device classes CPU and CHANNEL, the hardware state is also shown by SH-DEV-CONF.

SH-DEV-STA
SH-DEV-CONF

CTL CHPID CUU

Inner virtual connection of the device via the controller (CTL) to the channel (CHPID).

SH-DEV-CONF (INF=PATH)

CUU

Path addresses (CHN, CTL, DVC) to a device.

SH-DEV-CONF (INF=PATH)

DET

Number of generated devices of the specified type which are not available as they are in the configuration state “detached”.

SH-DEV-CONF (INF=PATH)

DET-P

Number of devices of the particular type which are still required by the system for user requests and which are to assume the “detached” state after their release. Reallocation of these devices is not possible.

SH-DEV-STA (INF=SUM)

DEV-A

Type of device allocation:(See VOL-A for meaning of values):

FREE	The device is not yet allocated; it is available for allocation.
DMS	The specified device is implicitly allocated by a DMS application on the private disk mounted on it.
PUBLIC	The device is implicitly allocated by an active public disk mounted on it.
PAGING	The disk is used exclusively for paging.
DMS-PAG	The disk is used for paging and is also allocated as shareable by tasks.
DRV	The device is explicitly allocated by an action initiated by DRV.
DMS-DRV	The device is implicitly allocated by a DMS application on the private disk mounted on it as a DRV disk.
PUB-DRV	The device is implicitly allocated as a DRV disk by an active public disk mounted on it.
DRV-PAG:	The device in question is implicitly allocated as a DRV disk by an active paging disk mounted on it.
=tsn	TSN of the job that exclusively allocates the device In the case of a disk device, it was requested with SECURE-RESOURCE-ALLOCATION UNIT=... or the occupying job is using the allocated disk for a USE= SPECIAL application (PHASE=IN-USE/MOUNT) In case of tape devices, the occupying task is using the allocated tape in any allocation mode (DMS, SPECIAL, WORK; PHASE=PREMOUNT/MOUNT/IN-USE). For all other devices (e.g. printers), no distinction is made between USE modes.

SH-DEV-STA
SH-DISK
SH-TAPE

DEV-TYPE

Device type of generation (D3480, 3590E,...) or volume type (tape processing) specified by the user for device allocation (e.g. TAPE-C4).

SH-RES
SH-DEV-STA

DISABLED ALIAS

Shows the number of FastDPAV alias devices in the DISABLED state.

SH-DEV-CONF (INF=PAV)

DISK-MOUNT

Indicates whether the operator is ready to perform disk mount operations.

• YES: The operator is ready to execute disk mount requests.
• NO: Requests for the mounting of new private disks are automatically rejected by the system.

SH-MOUNT

DVC

Mnemonic device name of a specified hardware unit.

SH-DEV-CONF (INF=PATH)

ENABLED ALIAS

Shows the number of FastDPAV alias devices in the ENABLED state.

SH-DEV-CONF (INF=PAV)

FRMT

Indicates the disk format:

• 2KB: NK2 disk: the minimum transfer unit of the disk is 2KB.
• 4KB: NK4 disk: the minimum transfer unit of the disk is 4KB.

SH-DISK (INF=SYS)

FPAV ALIAS CTL

Shows the mnemonic alias name of any FastDPAV alias device in format <mnemo-name>-xy. The status indicator xy means:
x = F for FastDPAV devices, P for “preferred” devices or '-' for others.
y = A for “active”, R for “ready” or N for “not ready”.

SH-DEV-CONF (INF=PAV)

FPAV BASE CTL

Shows the mnemonic basic name of any FastDPAV device in format <mnemo-name>-xy. The status indicator xy means:
x = F for FastDPAV devices, P for “preferred” devices or '-' for others.
y = A for “active”, R for “ready“ or N for “not ready”.

SH-DEV-CONF (INF=PAV)

INNER
CONNECTION

Describes the availability of created connections from the specified unit to all associated internal units (from CPU perspective). The following states are possible:

• INCLUDED:
  The connection (path) is available to the system for input/output. The WWPN of the port is also displayed for a channel of the type FC.
• REMOVED:
  The path is not available to the system for input/output. A distinction is made between REM (EXplicitly) and REM (IMplicitly).
• REM-PENDING:
  The path is declared unavailable by the system after end of usage.

SH-DEV-CONF (INF=INNER

LABEL

Describes the type of volume label (see SVL).
The following values are possible:

• STD: The volume uses standard labels.
• TAPE-MARK: The tape starts with a tape mark.
• NON-STD: The label has neither of the above attributes.

SH-TAPE

LOC[ATION]

Provides information on the name of a depot (eight alphanumeric characters).

SH-DEV-DEPOT
SH-DEV-STA
SH-MOUNT
SH-RES

MAX USED

Shows the maximum number of FastDPAV alias devices simultaneously used at alias control.

SH-DEV-CONF (INF=PAV)

MNEM

This field contains the mnemonic name of a device as defined at generation time.

SH-RES
SH-DEV-STA
SH-DISK
SH-TAPE
SH-DEV-CONF

NAME/ID

Provides information on the job name of the job referred to or on the user ID under which it is running.

SH-RES 

OP-CTL
OPERATOR-CONTROL

Specifies whether the operator wishes to be informed of new disk allocations by tasks (with the possibility of rejecting such allocation requests). The suffix “(D)” indicates that the data was taken from the DISK-DEFAULTS.

SH-DISK (INF=PAR)
SH-DISK-DEF

OUTER
CONNECTION

Describes the configuration state of the generated connections from the specified unit to all outer units directly connected to it (in the direction of the terminal). Possible values: see INNER CONNECTION.

SH-DEV-CONF (INF=OUTER/ALL)

PAMKEY

For disks, indicates whether use of the PAMKEY is permitted.

• YES: Use of PAMKEY is permitted.

• NO: Use of PAMKEY is not permitted.

SH-DISK (INF=SYS)

PATH

Describes the availability of a complete input/output path (from CHN via CTL to the device).

AVAIL:	Input/output path is available.
N.AV:	Input/output path is not available.
N.OP:	Input/output path is not operational.

SH-DEV-CONF (INF=PATH)

PHASE

Describes the monitoring mode for tapes and disks. The following states are possible:

ONLINE:

The volume is mounted without being allocated.

PREMOUNT:

The state exists only for tapes. The volume is allocated; for this volume a device allocation exists for a previous or later usage. This state is initiated by:

• • • /SECURE-RESOURCE-ALLOCATION for implicit or explicit tape reservation with device allocation

    • /ADD-FILE-LINK; exists up to OPEN time

    • CLOSE macro; exists up to release of the TFT entry

If the tape is not yet mounted on a suitable device, the operator receives a premount request (see also ACTION).

MOUNT:

The volume is already allocated but must still be mounted by the operator.

IN-USE:

The volume is released for usage (except for ACTION=CANCELLED).
For both of the allocation states IN-USE and PREMOUNT, volume monitoring takes place (a volume is always monitored if a valid allocation exists for it). Volume monitoring has the following functions:

• • • it guarantees a device allocation for tapes in the PREMOUNT state;

    • it requests the operator to make a volume available again which has been allocated but is currently not accessible (INOP);

    • it instigates clearing of a NO-DEVICE state once a device of the required type becomes free;

    • it initiates automatic repositioning of tapes in the event of illegal operator intervention (e.g. unloading the wrong tape device).

INVENTORY:

Only for cartridge volumes in the magazine of an MTC device that can be operated in random access mode at the BS2000 system. Device management is taking stock of the cartridges in the magazine. No allocation will be made until stocktaking is complete.

IN-CAR:

Only for cartridge volumes in the magazine of an MTC device that can be operated in random access mode at the BS2000 system. The cartridge has been assigned to the magazine and is currently in the magazine or drive.

OFF-CAR:

Only for cartridge volumes in the magazine of an MTC device that can be operated in random access mode at the BS2000 system. The cartridge has been assigned to the magazine but is currently not in the magazine or drive.

SH-DEV-STA
SH-DISK
SH-TAPE
SH-RES

PID

Device address for input/output. The PID (Physical device ID) is updated at ATTACH.

SH-DEV-CONF

PM

PATH-MASK

SH-DEV-CONF

POOL

Defines the availability of a device in relation to several systems:

NO:

This device is only available from the home system. Access to a volume mounted there is not possible from another system. Unit record devices are only generated with this POOL attribute.

SH: (shareable)

This device is usually generated for multiple systems and possesses a multiprocessor connection. It offers hardware attributes suitable for the parallel use of multiple systems. Disks are generated as shareable by default.

SH-DEV-STA
SH-DEV-CONF

PRE-USE/
IN-USE

Specifies the number of devices of the type defined which have been reserved implicitly by volumes of the relevant phase: PREMOUNT, MOUNT, IN-USE

SH-DEV-STA (INF=SUM)

PREMOUNT-MSG

Specifies whether and how the premount message (NKVT012) for a tape volume is to be output.

SH-MOUNT

RES-BY-MN

Specifies the number of devices of the type concerned which a user has reserved with the command SECURE-RESOURCE-ALLOCATION UNIT=mn.

SH-DEV-STA (INF=SUM)

RES-BY-TYPE

Specifies how many free devices of the type specified are needed to handle reservation and allocation requests already granted (e.g. /SEC-RES DEVICE= (TYPE=TAPE-C4,NUMBER=2)).

SH-DEV-STA (INF=SUM)

RESOURCES
REQUESTED/
COLLECTED

List of devices or volumes specified with SEC-RES or list of devices and volumes already reserved by the collector task

SH-RES-REQ

RTC

Specifies the routing code of the depot (see LOCATION)

SH-DEV-DEPOT

SVL-ALLOC

Specifies the mode (system-shareable or system-exclusive) in which the disk is allocated (actual allocation); it does not have to conform to the presetting made by the operator by means of the command SET-DISK VOL=vsn,SYS=....

SH-DISK (INF=SYS)

SVL-
RECORDING-
MODE

Defines the recording mode in which the disk was last used and whether the flag indicating a recorded inconsistency is set in the SVL. The possible values are:

SRV:

The disk is allocated in SRV mode (single recording by volume). Data is recorded on one disk.

DRV:

The disk is allocated in DRV mode (dual recording by volume); recording of data for a logical volume (visible at the user interface) generally takes place on two physical (mirror) disks.

SRV (INCONS):

The disk is allocated in SRV mode (single recording by volume) and the inconsistency flag is set in the SVL (possible, for example, during formatting or initialization; this flag remains set if formatting or initialization of the disk is prematurely terminated with VOLIN).

DRV (INCONS):

The disk is allocated in DRV mode (dual recording by volume) and the inconsistency flag is set in the SVL (e.g. indicating failure of one of the DRV disks or termination by means of a command).

To remedy the inconsistent state: Reinitialize the disk or read in FDDRL backup copy.

SH-DISK (INF=SYS)

SYSTEMS

System IDs of the systems occupying the disk. Allocation is stored on the disk's SVL.

SH-DISK (INF=SUM)

SYS-ALLOC

Value specifying in which mode a private disk is to be used by the home system in relation to other systems when USE=DMS applies. Possible modes:

EXCL[USIVE]:

Other systems are excluded from simultaneous use of this disk.

ALL:

The system allocation mode of a private disk is not determined until allocation (/SET-DISK-PAR SYS-ALLOC=... command).

An “(A)” following the above indicates the generation attribute (ALL) of the device.

SH-DISK (INF=PAR)

TAPE-MNEMONICS

Contains the location of the assigned tape devices.

SH-DEV-DEPOT

TAPE-MOUNT

Indicates whether the operator is ready to perform tape mount operations.

• YES: Allocation requests for new tapes to be mounted lead to mount messages.
• NO: Allocation requests for new tapes to be mounted are automatically rejected by the system.

SH-MOUNT

TAPE-SELECT

Specifies how tapes are selected:

BEST-GENERATED:

Default. The first suitable free device is selected from the device table at system generation time.

LEAST-RECENTLY-USED:

From all the suitable free devices the one selected is the one which has been out of use the longest.

BY-CONTROLLER:

From all the suitable free devices the one selected is the one with the controller with the lightest load.

SH-MOUNT

TASKS-WITH-RESERVATIONS

List of tasks with the number of devices of the specified type occupied/reserved by them.

SH-DEV-STA (INF=TASK/ALL) 

TIME-STAMP

Specifies the exact date and time of day at which the SVL of the disk last registered an initial allocation (date/time of day of the first system ID stored in the SVL). This time stamp is used, in addition to the VSN, for disk identification.

SH-DISK (INF=SYS)

TIME-WEIGHT

Provides information on the wait time which was set by the START-RESOURCE-COLLECTION command and which is a factor in calculating the weighting by the system for the collector task.

SH-RES-REQ

TSK-PRIO

Priority of the relevant job.

SH-RES-REQ

TSK-TYPE

Informs the operator whether the task is a batch or interactive task or has been generated by RFA on the remote computer (SECURE requests were issued by another computer).

SH-RES-REQ

TSN

4-digit task sequence number assigned when a task is created.

SH-RES
SH-DISK (INF=TASK)

TYPE

Specifies the device type of the volume from which information is requested. The device type can be influenced not only by a user request (CREATE-FILE, SECURE-RESOURCE-ALLOCATION, etc.) but also by the following events:

online-event:

The activation interrupt assigns the volume to a device whose device type determines the device type of the volume in the event of a VSN request.

SET-DISK-PAR:

If the device type is predefined with this command then it is possible to specify the type before any volume allocation. If the device type is not predefined, it is defined implicitly when the disk is allocated

SH-DISK (INF=PAR)
SH-RES
SH-DEV-STA

UN-CLASS

Device class to which the specified unit belongs.

• DVC defines an end-user device (disk, tape, printer,...)

• CTL defines a controller
• CHN defines a channel
• CPU defines a central processing unit

SH-DEV-CONF

UN-TYPE

Generic term for “device type”. It covers not only the set of all possible device types but also the values of all controller, channel and CPU types.

SH-DEV-CONF

UNLOAD-RELEASED-TAPE

Indicates whether tapes are unloaded following their release, provided they have not been unloaded by the user.

ACCORDING-TO-USER-REQ:

Default; tape and MTC devices are only unloaded on release if the user so requests.

REGARDLESS-OF-USER-REQ (ALL):

Tape and MTC devices are automatically unloaded on release, irrespective of any user request.

REGARDLESS-OF-USER-REQ (MBK):

MTC devices are automatically unloaded on release, irrespective of any user request. Tape devices are only unloaded if the user so requests.

IGNORE-USER-REQ:

For tape devices, a user request to unload is ignored.
For MTC devices, a request to unload is ignored if the device is being operated in MANUAL mode, otherwise the device is unloaded at the request of the user.

SH-MOUNT

USE

Provides information on:

• the usage mode in which a mounted volume is to be operated;

• the resultant degree of monitoring;

• the scope of checking when the assignment is performed by the monitors.

The following values are possible:

DMS:

The volume is occupied by one or more DMS applications.
Only readable volumes are accepted for allocation, i.e.:

• • • disks can only be processed with an STD label;

    • tapes can be processed with or without an STD label as long as they are uniquely identifiable.

The standard task allocation mode for USE=DMS is task-shareable for private disks and task-exclusive for tapes.
Each operator intervention during PHASE=IN-USE results in a REMOUNT-RECOVER and, in the case of tapes, in repositioning. It is ensured that only one volume with a particular VSN is allocated in the DMS usage mode.

SPECIAL:

The volume is occupied by a special application (privileged application, e.g. VOLIN, INIT, test and debugging programs, FDDRL,...). The task and system allocation mode is EXCLUSIVE. Checks carried out upon allocation (VOLIN, INIT) or monitoring functions such as repositioning or MOVE (organized by online FDDRL itself) can be deactivated by the special application. There is no check to determine whether the VSN is unique. 

WORK:

The tape mounted is used as a work tape (it is made available to the DMS user for the processing of work files).

SH-DISK
SH-TAPE

USER-ALLOC[ATION]

Specifies which allocation requests issued by the user (task-shareable, task-exclusive) are allowed for a private disk working with USE=DMS. The suffix “(D)” indicates that the data was taken from the DISK-DEFAULTS.

SH-DISK (INF=PAR)
SH-DISK-DEF

VM-ASSIGN

Shows which device assignments or possible assignments exist to a VM:

BY-GUEST	The device is implicitly assigned to its own VM.
BY-VM-ADMIN	The device is explicitly assigned to its own VM.
BY-GUEST-POSS	The device is no assigned to its own VM, but implicit assignment is possible.

In the following cases the device is not assigned to its own VM and an implicit assignment is not possible:

VM-INHIBITED	The VM is not authorized for implicit assignment.
DEV-INHIBITED	The implicit assignment is not permitted for the device.
ELSEWHERE	The device is exclusively assigned to a different VM.

SH-DEV-CONF (INF=VM2000)

VM-USAGE

Shows which type of usage is being used for the device by VM2000. The meaning depends on VM-ASSIGN.

If VM-ASSIGN = BY-GUEST / BY-VM-ADMIN:
EXCL	The device id explicitly assigned to its own VM.
SH(D)	The device is assigned to its own VM as shared with direct I/O processing (only a VM sharer).
SH(I)	The device is assigned to its own VM as shared with indirect I/O processing.
If VM-ASSIGN = BY-GUEST-POSS:
EXCL	The device is explicitly assigned to a different VM, however, an assignment is possible due to the KEEP status of the device (MTC).
SH(D)	The device is assigned to its own VM as shared with direct I/O processing (only a VM sharer).
SH(I)	The device is assigned to a different VM as shared with indirect I/O processing.
NONE	The device is not assigned.
If VM-ASSIGN = VM-INHIBITED / DEV-INHIBITED:
EXCL:	The device is exclusively assigned to a different VM.
SH(D):	The device is assigned to a different VM as shared with direct I/O processing (only a VM sharer).
SH(I):	The device is assigned to a different VM as shared with in direct I/O processing.
NONE:	The device is not assigned.
If VM-ASSIGN = ELSEWHERE:
EXCL:	The device is exclusively assigned to a different VM.

SH-DEV-CONF (INF=VM2000)

VOL-A

For public disks, this field merely indicates whether the mounted disk is the system disk SYSRES, a shareable disk, a paging disk or a “normal” public disk without any special attributes.
For private volumes (exclusive disks), it provides information on the allocation of the volume by the user:

PAGING	The disk is part of the allocated pubset and is used for paging.
PUBLIC:	The disk is part of the allocated pubset.
SHARE:	The disk is shareable and already occupied by one or more jobs. Requests from other users are permitted.
CANCEL:	Use of the disk was canceled.
FREE:	Currently no user is accessing the volume.
EXCL:	The private volume is exclusively allocated to a user job (other users cannot work with this volume).

SH-RES
SH-TAPE
SH-DISK

The values PAGING, PUBLIC and SHARE have the following meanings in connection with the values output for DEV-A:

DEV-A	VOL-A	Meaning
PUBLIC	PUBLIC	The disk is IMCATed and is not used for paging
PUBLIC	PAGING	The disk is IMCATed and is used for paging.
PAGING	PAGING	The disk is used exclusively for paging.
PUB-DRV	PAGING	The disk is IMCATed as a DRV volume and is used for paging.
DRV-PAG	PAGING	One disk of the DRV pair is allocated for paging in DRV mode.
DRV-PAG	(empty)	The other disk of the DRV pair is not used by paging.
DMS-PAG	SHARE	The disk is used for paging and is also allocated by shareable tasks

VSN

"Name" of a volume: the "VOLUME SERIAL NUMBER" of a volume (VOLIN, INIT) defined when a volume is initialized. If the volume does not have a readable label or if no VSN was included in the volume request, synonyms can also be displayed.

The following values are possible:

<vsn>:	The VSN of a volume specified with VOLIN or INIT, see VOLUME operand of the CREATE-FILE, SECURE-RESOURCE-ALLOCATION commands.
*UNKNO[WN]:	The volume does not have a standard BS2000 label.
*SCRAT[CH]:	The volume request is not accompanied by a VSN (e.g. for tapes CREATE-FILE without a VOLUME operand or VOLUME=*NO/*ANY).
*WORK:	The tape concerned was requested with /CREATE-FILE with the SUPPORT=TAPE(DEVICE=WORK) operand.
The following values are also possible with SH-RES, SH-DEV and SH-DISK:
F-<mn>:	What is known as a substitute VSN is displayed for foreign disks which have no BS2000 label. This is formed from the prefix "F" and the mnemonic device name <mn> of the foreign disk.

SH-RES
SH-DEV-STA
SH-DISK
SH-TAPE

VTOC-SYS

Catalog ID of the system which currently holds the VTOC lock for the disk and thus temporarily excludes other systems from space and catalog operations on this disk. The VTOC system is stored in the SVL of the disk.

SH-DISK (INF=SYS)

WAIT-TIME

Time the specified task has already waited for the release of the requested resources (hh:mm:ss).

SH-RES-REQ

#PHYS-HALF-PAGES

Displays the capacity of the disk in PAM pages (Number of Physical Half Pages).

SH-DISK (INF=SYS)