Hitachi TrueCopy for z/OS (T1711-96009, June 2006)

TrueCopy for z/OS user guide 157
For 2105 controller emulation (‘lss’ parameter for LCU no., CGROUP and RESETHP options):
CESTPATH DEVN(X’dev#’) PRIM(X’ssid’ serial# X’lss’) SEC(X’ssid’ serial#’ X’lss’) LINK(X’aabbccdd’)
[CGROUP(YES|NO) RESETHP(YES|NO)]
NOTE: For fibre, do not use the RESETHP option. For serial, the RESETHP option rejects host I/O
operations. Before you use this option, stop the I/O operations from the host.
For 2105 emulation, use the CESTPATH CGROUP option to control freeze. Do not use the CGROUP
FREEZE option. If you use the FREEZE option, the CESTPATH command will be rejected.
CAUTION: Before issuing the CESTPATH command, verify that the relevant paths are offline from the
host(s) (for example, configure the Chipid offline, deactivate the LPAR, or block the port in the ESCD). If any
active paths still exist, the add path operation will fail because the port mode cannot be changed.
NOTE: For Fibre Channel interface, do not use the CESTPATH and CDELPATH commands at the same
time as the SCSI path definition function of LUN Management. The Fibre Channel interface ports need to
be configured as initiator ports or RCU target ports before the CESTPATH and CDELPATH commands are
issued.
The following table describes the CESTPATH LINK parameter for the Fibre Channel interface.
The syntax for the CESTPATH command (fibre channel Interface) is:
CESTPATH DEVN(X'dev#') PRIM(X'ssid'' WWNN X'lss') SEC(X'ssid' WWNN X'lss')
LINK(X'aabbccdd') [CGROUP (YES|NO)]
Table 35 CESTPATH LINK parameter (ESCON Interface)
LINK Parameter Fibre Channel Interface
aa
First two digits of SAID,
see Table 37 on page 159
.
Bit 0-3: RCU controller ID
x2-xF: Number stands for RCU
controller ID.
(x’4’ is specified.)
Bit 4-7: FREEZE option
x0:keep the status
x1:Enabled
x2:Disabled
When there are several paths, the same
values must be specified for all the
paths.
bb
Second two digits of SAID,
see Table 37 on
page 159.
MCU port number (0x00-0x1ff)
cc RCU port number (0x00-0x1ff)
dd CU number (0x00-0x3f)