z/VM: CP Commands and Utilities Reference - z/VM - IBM

usage=ppp%
indicates the percentage of expanded storage or main storage in use by
minidisk cache.
bias=b.bb
indicates the bias factor used by the arbiter to determine the target size for the
storage type.
Response 2:
The following response is issued when you specify SET MDCACHE SYSTEM OFF.
Minidisk cache OFF for system
Response 3:
The following response is issued when you specify SET MDCACHE RDEV
DFLTON/DFLTOFF/OFF/FLUSH rdev.
Minidisk cache {DFLTON } for rdev
{DFLTOFF}
{OFF }
{FLUSHED}
rdev
identifies the real device number.
Response 4:
The following response is issued when you specify SET MDCACHE RDEV
DFLTON/DFLTOFF/OFF/FLUSH for a range of real device numbers.
Minidisk cache {DFLTON } for rdev-rdev
{DFLTOFF}
{OFF }
{FLUSHED}
rdev-rdev
identifies the first and last real device numbers in the range.
Response 5:
The following response is issued when you specify SET MDCACHE MDISK
ON/OFF/FLUSH USERID userid vdev or the class G command SET MDCACHE
FLUSH vdev.
Minidisk cache {ON } for userid vdev [recordmdc enabled]
{OFF }
{FLUSHED}
userid
identifies the userid.
vdev
identifies the virtual device number.
recordmdc enabled
indicates that record level minidisk caching is in effect for this minidisk rather
than normal full track minidisk caching.
Response 6:
SET MDCACHE
Chapter 2. CP Commands 1291