ABCs of z/OS System Programming Volume 3 - IBM Redbooks

VARY SMS This command changes storage group, volume, library, or drive status.
You can use this command to:
– Limit new allocations to a volume or storage group
– Enable a newly-installed volume for allocations
DISPLAY SMS Refer to “Displaying the SMS configuration” on page 284.
DEVSERV This command displays information for a device. Use it to display the
status of extended functions in operation for a given volume that is
attached to a cache-capable 3990 storage control. An example of the
output of this command is shown in Figure 5-24 on page 282.
Table 5-1 Comparison of SETSMS and SET SMS commands
Difference SET SMS=xx SETSMS
When and how to use the
command.
Where the parameters are
entered.
What default values are
available.
Initializes SMS parameters and
starts SMS if SMS is defined
but not started at IPL. Changes
SMS parameters when SMS is
running.
IGDSMSxx PARMLIB member. At the console.
Default values are used for
non-specified parameters.
Changes SMS parameters only
when SMS is running.
No default values. Parameters
non-specified remain
unchanged.
For more information about operator commands, see z/OS MVS System Commands,
SA22-7627.
Chapter 5. System-managed storage 283