Administrator's Reference

QUERY DEVCLASS (Display Information on One or More Device Classes)

Use this command to display information on one or more device classes.

Privilege Class

Any administrator can issue this command.

Syntax

                     .-*-----------------.
>>-Query DEVclass----+-------------------+---------------------->
                     '-device_class_name-'
 
      .-Format--=--Standard-----.
>-----+-------------------------+------------------------------><
      '-Format--=--+-Standard-+-'
                   '-Detailed-'
 

Parameters

device_class_name
Specifies the name of the device class to be queried. This parameter is optional. You can use wildcard characters to specify this name. All matching device classes are displayed. If you do not specify a value for this parameter, all device classes are displayed.

Format
Specifies how the information is displayed. This parameter is optional. The default value is STANDARD. Possible values are:

Standard
Specifies that partial information is displayed for the specified device class.

Detailed
Specifies that complete information is displayed for the specified device class.

Usage Notes

The mount wait value is now displayed for a device class on an MVS server.

Examples

Task 1

Display information on the device class named SQUARE1.

Command:
query devclass square1

Output:

+--------------------------------------------------------------------------------+
|Device     Device     Storage  Device   Est/Max  Mount                          |
|Class      Access        Pool  Type     Capacity Limit                          |
|Name       Strategy     Count                     (MB)                          |
|                                                                                |
|---------  ---------- -------  ------ ------  --------                          |
|SQUARE1    Sequential       1  CARTRIDGE  180.0      2                          |
|                                                                                |
+--------------------------------------------------------------------------------+

See Task 2 for parameter definitions.

Task 2

Display information in full detail on the SQUARE2 device class.

Command:
query devclass square2 format=detailed

Output:

+--------------------------------------------------------------------------------+
|             Device Class Name: SQUARE2                                         |
|        Device Access Strategy: Sequential                                      |
|            Storage Pool Count: 0                                               |
|Last Update by (administrator):                                                 |
|         Last Update Date/Time: 04/20/1998 10:54:57                             |
|                   Device Type: CARTRIDGE                                       |
|         Maximun Capacity (MB):                                                 |
|       Estimated Capacity (MB): 180.0                                           |
|          Data Set Name Prefix: ADSM                                            |
|                   Mount Limit: 2                                               |
|         Mount Retention (min): 60                                              |
|                    Label Type: IBMSL                                           |
|               Expiration Date:                                                 |
|              Mount Wait (min): 60                                              |
|                     Unit Name: 3480                                            |
|                        Volser:                                                 |
|                   Compression: Yes                                             |
|                    Protection: No                                              |
|                     Retention:                                                 |
|                   Server Name:                                                 |
|                  Retry Period:                                                 |
|                Retry Interval: 05/31/1996 13:15:36                             |
+--------------------------------------------------------------------------------+

Device Class Name
Specifies the name of the device class.

Device Access Strategy
Specifies how data is written to the device class.

Storage Pool Count
Specifies the number of storage pools that are assigned to the device class.

Last Update by (administrator)
Specifies the administrator that made the last update to the device class.

Last Update Date/Time
Specifies the date and time of the last update.

Device Type
Specifies the device type of the device class.

Maximum Capacity (MB)
Specifies the maximum capacity of a volume associated with the device class.

Estimated Capacity (MB)
Specifies the estimated capacity of a volume associated with the device class.

Data Set Name Prefix
Specifies the prefix name of the data set.

Mount Limit
Specifies the maximum number of sequential access volumes that can be mounted concurrently.

Mount Retention (min)
Specifies the number of minutes to retain an idle sequential access volume before dismounting it.

Label Type
Specifies the type of label.

Expiration Date
Specifies the expiration date of the device class. If this column is blank, the device class does not expire.

Mount Wait (min)
Specifies the maximum number of minutes to wait for a sequential access volume to be mounted.

Unit Name
Specifies the device type.

Volser
Specifies the volume serial number of the device.

Compression
Specifies if the data is compressed or not.

Protection
Specifies if the data is protected or not.

Retention
Specifies the number of days to retain the data.

Server Name
Specifies the name of a defined server.

Retry Period
Specifies the interval over which the server should attempt to contact a target server if there is a suspected communications failure.

Retry Interval
Specifies how often the retries are done within a given retry period.

Related Commands

Table 146. Commands Related to QUERY DEVCLASS

Command Description
DEFINE DEVCLASS Defines a device class.
DEFINE SERVER Defines a server for server-to-server communications.
DELETE DEVCLASS Deletes a device class name.
QUERY SERVER Displays information about servers.
UPDATE DEVCLASS Changes the attributes of a device class.


[ Top of Page | Previous Page | Next Page | Table of Contents | Index ]