Moving a Minidisk

Directory Manager Guide › Managing Minidisks › Changing Minidisks › Moving a Minidisk

Moving a Minidisk

Although CA VM:Director does not allow anyone to move minidisks that are in use read/write, you can move minidisks that are not in use or that are in use read‑only, if you are authorized to do so.

If you need to move a minidisk, check first that no one is linked to the minidisk or that they are linked read–only.

Note: For more information, see Checking Active Links.

When you find who those users are, ask them to detach their links with the CP DETACH command.

When the links are removed, you can move the minidisk.

Note: When you move a minidisk that a user has linked read–only, CA VM:Director holds the space the minidisk occupies until you use the RECLAIM command against the minidisk. CA VM:Director maintains the minidisk by redefining it to the CA VM:Director directory entry with a virtual address in the range 600 to 6FF. For more information, see RECLAIM Command in the Reference Guide.

If your site is not using the Servant Facility and the minidisk you are moving is to remain the same size, blocking factor, and device type, your user ID must have access to the minidisk where the CMS DDR module resides.

To move a minidisk

From CMS, enter the MANAGE command with the name of the directory entry that owns the disk, the numeral 6, and the virtual address of the disk. For example, to move the MANAGER 185 disk, enter the following:

vmdirect manage manager 6 185

The Move a Minidisk screen appears as follows:

MAN000B0 Move a Minidisk VM:Director ------------------------------------------------------------------------------ Userid: USERID Minidisk Address: 192 Device Type: 3390 Volume: VST020 Minidisk Location: 1303 Minidisk Size: 1 Label: DSK192 Utilization: 04% Number of Files: 0 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + | | | Subpool: MAIN Device type: Size: | | | | Volume: Location: | | | + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + Enter information only in the fields you wish to change. -------------------------------------------------------------------------------- PA1: Cancel PF1: Help PF3: Quit PF10: Print PF12: End

The Subpool field initially lists your default subpool, meaning that CA VM:Director will allocate the minidisk you are moving according to your default subpool’s definition.
To reallocate the minidisk according to the definition of another subpool you are authorized to use, type that subpool name.
To change the minidisk’s device type, enter that device type, such as 3380 or FB‑512, in the Type field.
To make the minidisk size some number of 512-byte blocks on any device type, enter an asterisk in the Type field.

To leave the minidisk allocated on its current device type, leave this field blank.
To change the size of the minidisk, specify the new size in the Size field.
You can specify the size in either of two ways, which are explained in Step 3.

To leave the size of the minidisk unchanged, leave the Size field blank.
To change the real disk on which the minidisk is allocated, enter that real disk’s volume serial (volser) number in the Volume field.
To allocate the minidisk from a volume according to the subpool, leave this field blank.
Specify the actual cylinder or block on the real disk where you want this minidisk to begin in the Location field. If you leave this field blank, CA VM:Director assigns the location based on the allocation definition of the specified subpool and the available storage space.
Press ENTER to submit your changes to CA VM:Director.
If there are problems with any of the values you entered, CA VM:Director returns you to that screen where you can correct the problems.

If all entries on this screen are valid, CA VM:Director displays the Format a Minidisk screen. This screen contains the minidisk specification you just entered and a default block size and label for the new minidisk.

Check the minidisk’s current block size with the new device type you assigned to it so that you can optimize the block size. For example, one cylinder of a 3380 DASD formatted with 512–byte blocks holds approximately 345K. If formatted with 4096–byte blocks, its capacity increases to 600K.
Change the block size and label for the moved minidisk the same way you do for new minidisks. Format the minidisk according to the instruction.

You can also change a minidisk by answering screen prompts. To do so, follow these steps:

Enter the MAINT MANAGE command with the name of the directory entry that owns the disk, the DISKMOVE parameter, and the minidisk virtual address. For example, to change the USER45 1A0 disk, enter the following:
```
vmdirect maint manage user45 diskmove 1A0
```
Answer the prompts with the requested information for subpool, minidisk size, device type, and other minidisk characteristics.
When you have finished, enter end in response to the prompt for the next MANAGE subfunction.

You can also change a minidisk by using the CA VM:Director CHGMDISK command. This command allows you to specify more parameters. For example, to change the PHEFR09 1A0 disk from 500KB on a 3380 to 2 MB on a 3390, enter the following command:

vmdirect chgmdisk phefr09 1a0 2M 3390

Note: For more information about additional parameters, see theCHGMDISK command in the Reference Guide.