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Using the Virtual Volume Display Panel

The Virtual Volume Display Panel includes information about the compressed and uncompressed Virtual Volume size, and whether the Virtual Volume is resident in the DASD buffer. Only Virtual Volumes that are not in scratch status will be displayed.

The following panel would be displayed if an (S)elect was typed in front of range 100100-100199 and all VOLSERs in that range were in scratch status except VOLSERs 100171 and 100187:

                   CA Vtape Virtual Volume Display Panel     Row 1 to 2 of 2  Command ===>    Cache Limit(MB)  76149     Cache Inuse(MB)  47225     MB Freeable 2374    Scratch  Pool1=127     Pool2=485     Pool3=1296    Pool4=n/a           Pool5=n/a     Pool6=n/a     Pool7=n/a     Pool8=163              R  Use S to display additional virtual volume data                           E    Volid   Tape DSN                                VRM Cmp%  #MB Size Allo S  _ 100171+ ZOBKU01.SVTS61.P1802$W1                   2    0    8    8    0 N  _ 100187  SVTS120.QASVT4.G5197.PASS                 0    0  324  324    0 N  ***************************** Bottom of data ******************************  The cross-system information has been refreshed

The information shown includes the following:

Note: For more information about Cache Limit (MB), Cache Inuse (MB), MB Freeable, and Scratch Virtual Volumes, see Cache Management and Scratch Pool Header Information.

Volid

Virtual VOLSER number.

Tape DSN

Data set name associated with the Virtual Volume. If the volume contains multiple DSNs, a plus sign is shown next to its VOLSER. To view these additional DSNs, select the entry by placing an S next to the entry.

VRM

Stands for Version Release Maintenance. It is a value assigned to a level of code where a significant new feature or function was introduced. As Virtual Volumes are created, they are assigned the lowest VRM value required to properly support them. The assigned value is used during subsystem start up to ensure that the level of code being used can properly support the existing Virtual Volumes.

Cmp%

Percentage the Virtual Volume was compressed in the DASD buffer.

#MB

Uncompressed size of the Virtual Volume tracked in 4 MB segments.

Size

Compressed size of the Virtual Volume rounded to 4 MB.

Allo

Amount of DASD space allocated by the Virtual Volume.

Res

A flag that indicates if the Virtual Volume resides in the DASD buffer.

The (S)elect line command can be used to display additional information about individual Virtual Volumes. The following panel will be displayed:

  Menu  List  Mode  Functions  Utilities  Help                                      File  Help                                                                    --------------------------------------------------------------------------                       CA Vtape Virtual Volume Display Panel      Row 1 to 1 of 1     Command ===>  ___________________________________________________________                                                                                       Volser . . . : 102246    Flags  . . . : 24800000  Number of TMs   5   Label Type . . . : 02    Group ID . . : 11  S     Dev Type . . : 78048081   Tape DSN                                        Rec Sz  BLK Sz  FM   Seq #    SVTS.TGRP51.RETPD022                            10O    22000   FB    1   ******************************* Bottom of data *****************************

The information shown in the panel includes the following:

Volser

Virtual Volume being displayed.

Flags

A four-byte hexadecimal field comprised of the FLAG1, FLAG2, FLAG3, and FLAG4 fields. For more information about the flag settings and their meanings, see Virtual Volume Flag Fields.

Number of TMs

Number of Tape Marks written to the Virtual Volume.

Label Type

For more information about Label Type settings, see Label Types.

Group ID

Externalization group and subgroup.

Dev Type

The Virtual Volume device type.

Tape DSN

The first forty-four DSNs written to the Virtual Volume.

Rec Sz

Record size of the data set.

BLK Sz

Block size of the data set.

FM

Format type of the data set.

Seq #

File sequence number of the data set on the Virtual Volume.