HP StorageWorks XP Remote Web Console Software - Manual (Page 159)

TrueCopy for z/OS user guide 159
For Fibre Channel cable:
ll = For ESCON cable: ESCON destination link address. The destination port number of ESCD must be
specified if the TC390 link is connected through an ESCD dynamic connection. Otherwise, “00” must
be specified.
For Fibre Channel cable: Fibre Channel port ID of the secondary CU (RCU) from which the paths of the
TC390 should be established.
cc = LCU number of the secondary CU (RCU).
The parameters may be described in the GDPS DASD configuration list. The required link parameter values
must be written into the list or must be given to RCMF input.
• Mode 59 (HXRC only): Mode 59 must be ON for HXRC (activates variable RECSET size to provide
performance improvement).
• Mode 64 (optional): Mode 64 extends the range of the CGROUP command to the entire MCU instead
of just one logical CU image. When mode 64 is enabled, one CGROUP command to any M-VOL or
simplex volume in the MCU is executed across all MCU-RCU paths and on all TC390 M-VOLs in the
specified MCU, including all CU images (CU0-CU3). When mode 64 is disabled, you must issue a
separate CGROUP command to an M-VOL (or simplex volume) in each logical CU image of the MCU.
Although this mode can be enabled nondisruptively (that is, existing TC390 pairs do not have to be
deleted), mode 64 should be enabled at the same time that mode 49 is enabled.
NOTE: For operations in a GDPS environment, mode 64 must be OFF.
• Mode 104 (3990 only): Mode 104 changes the default FREEZE option to enabled. This mode should
be enabled when CGROUP is being used in the GDPS environment. When mode 104 is enabled, the
FREEZE option will remain enabled after the XP128/XP1024/XP10000/XP12000 is powered off and
then back on (for example, due to some disaster). When mode 104 is not enabled, the FREEZE option
will revert to the default value of disabled after the XP128/XP1024/XP10000/XP12000 is powered
off and back on.
NOTE: For operations in a GDPS environment, mode 104 must be ON.
Mode 104 is invalid for 2105 emulation.
For more information on XP128/XP1024/XP10000/XP12000 SVP modes related to TC390 (and
HXRC) operations, refer to Table 3 on page 20.
CGROUP (FREEZE/RUN) Command
The CGROUP TSO command specifies all of the following:
• The device (LDEV ID of TC390 M-VOL or simplex volume) (DEVN parameter).
• The MCU (S/N and lowest SSID in CU image) (PRIM parameter).
• The RCU (S/N and lowest SSID in CU image) (SEC parameter).
The CGROUP TSO command has the following two options:
• FREEZE (3990 only): When CGROUP is issued with the FREEZE option, the MCU:
• Blocks the logical path(s) between the specified MCU CU image and RCU CU image to stop all
TC390 update copy operations to the R-VOLs in the specified RCU.
Value Port ID Freeze Option
X’4000’-X’40FF’ Interface 1A-GR Default
X’4100’-X’41FF Interface 1A-GR Enabled
X’4200’-X’42FF’ Interface 1A-GR Disabled