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3-10 Functional and Operational Characteristics
Hitachi Universal Storage Platform V/VM User and Reference Guide
System Option Modes, Host Modes, and Host Mode Options
System Option Modes
To provide greater flexibility and enable the Universal Storage Platform V/VM
to be tailored to unique customer operating requirements, additional
operational parameters, or system option modes, are available. At installation,
the modes are set to their default values (specified in below). Be sure to
discuss these settings with your Hitachi Data Systems team. The system
option modes can only be changed by a Hitachi Data Systems representative.
Table 3-1 lists the system option mode information for Universal Storage
Platform V/VM microcode 60-02-48-00/00.
Table 3-2 specifies the relationship
between modes 503 and 269 for Storage Navigator operations.
Table 3-3
specifies the relationship between modes 503 and 269 for SVP operations.
The system option mode information may change in future microcode
releases. Contact your Hitachi Data Systems representative for the latest
information on the USP V/VM system option modes.
Table 3-1 System Option Modes
Mode Category Function Default MCU/RCU
20 TrueCopy for z/OS R-VOL read only function. OFF RCU
36 TrueCopy for z/OS Setting default function (CRIT=Y) option for SVP panel (TCz). OFF MCU
64 TrueCopy for z/OS Setting effective range of CGROUP. OFF MCU
80
ShadowImage for
z/OS
Suppression of ShadowImage (and Business Continuity
Manager) Quick Restore function.
OFF –
87 ShadowImage ShadowImage Quick Resync by CCI. OFF –
93
TrueCopy for z/OS
Async
TrueCopy for z/OS Async throttling feature. OFF MCU
104 TrueCopy for z/OS Changing default of CGROUP Freeze option. OFF MCU
114 TrueCopy for z/OS Turning TCz Links Around option. OFF MCU/RCU
122
ShadowImage for
z/OS
Suppression of ShadowImage for z/OS (and Business
Continuity Manager) Quick Split and Resync function.
OFF –
161 Open Suppression of high speed micro-program exchange for CHT. OFF –
190 TrueCopy for z/OS
TCz – Allows you to update the VOLSER and VTOC of the R-VOL
while the pair is suspended if both mode 20 and 190 are ON.
OFF RCU