DFSMSdss: Build the IPLable stand-alone DFSMSdss image

Description: If you intend to use the Stand-Alone Services provided by DFSMSdss, you must use the DFSMSdss BUILDSA function to create the Stand-Alone Services IPL-capable core image. Starting with z/OS V1R12, DFSMSdss now uses BSAM instead of EXCP to read from and write to DFSMSdss dump data sets during DUMP, COPYDUMP, and RESTORE operations. To migrate to this support, you must rebuild the IPL-able core image for the Stand-Alone Services program.

If this migration action is not performed, users of the DSS standalone restore will not be able to restore backups on tape created with greater than 65520 byte blocks. Message ADRY3530I SEQUENCE ERROR ON RESTORE TAPE is issued and the operation is terminated. Backups created with 65520 byte blocks will restore as before.

Element or feature:

DFSMSdss.

When change was introduced:

General migration action not tied to a specific release.

Applies to migration from:

z/OS V1R13 and z/OS V1R12.

Timing:

Before the first IPL of z/OS V2R1.

Is the migration action required?

Yes, if you intend to use the Stand-Alone Services provided by DFSMSdss.

Target system hardware requirements:

Stand-Alone Services supports the IBM® 3494 TotalStorage Enterprise Automated Tape Library, the IBM 3495 TotalStorage Enterprise Automated Tape Library, and the IBM 3590 TotalStorage Enterprise Tape Subsystem.

Target system software requirements:

None.

Other system (coexistence or fallback) requirements:

None.

Restrictions:

Stand-Alone Services does not support the creation of the core image on an SMS-managed volume.

System impacts:

To ensure that Stand-Alone Services is available when you run from DASD, do not delete the SYS1.ADR.SAIPLD.Vvolser data set or move it to another volume.
If you IPL from DASD and later change the volume serial number, you must rerun the BUILDSA function to create a new core image data set with the new volume serial number in the name.

Related IBM Health Checker for z/OS® check:

None.

Steps to take: Follow these steps:

Prepare for Stand-Alone Services by creating a Stand-Alone Services IPLable core image with the BUILDSA command. With the BUILDSA command you can specify the device (card reader, tape drive, or DASD volume) from which Stand-Alone Services will be IPLed. You can also specify the operator console to be used for Stand-Alone Services.
The BUILDSA function builds the IPLable core image under the current operating system and determines a record size based on whether the IPL is from card, tape, or DASD.
Use RACF® or another external security system to protect the SYS1.ADR.SAIPLD.Vvolser data set and the Stand-Alone Services modules.
If you have not done so already, make a backup copy of your system that can be restored by this function. For information about backing up volumes, see z/OS DFSMSdfp Storage Administration.
Note: Message ADRY3530I SEQUENCE ERROR ON RESTORE TAPE might be issued with operation terminated if a user tries to restore a back up that was created with a block size greater than 65520 bytes, using the DSS stand-alone restore program from z/OS V1R11.

Reference information: For more information, see z/OS DFSMSdfp Storage Administration.