HP XP7 Owner Guide (H6F56-96006)

Table 11 System option modes (continued)
MCU/RCUDefaultDescriptionCategoryMode
per hour. If SSB=AD02 occurs and a path is blocked, perform
Check Paths on this path again.
4. If Check Paths is performed while Business Copy Z pair and
Compatible FlashCopy Mirror pair are defined in the specified
volume, the Check Paths operation is rejected with a message
“605 2518”. If Business Copy Z pair and Compatible
FlashCopy Mirror pair are defined in the specified volume,
do not perform Check Paths and wait until the display is
automatically changed.
.OFFDisables the Thin Provisioning Rebalance function that allows the
HDDs of all ECC Groups in the pool to share the load.
Mcrocode
verwsion V02 and
lower:
749
Mode 749 = ON:
Thin Provisioning,
Smart Tiers
The Thin Provisioning Rebalance function is disabled.
Mode 749 = OFF (default):
Mcrocode version
V02_ICS or
V02+1:
The Thin Provisioning Rebalance function is activated.
Notes:
Thin Provisioning
1. This option is applied when no change in performance
characteristic is desired.
Dynamic
Provisioning for
Mainframe
2. All THP pools are subject to the THP Rebalance function.
3. When a pool is newly installed, the load may be concentrated
on the installed pool volumes.
Smart Tiers
4. When 0 data discarding is executed, load may be unbalanced
among pool volumes.
Mcrocode version
V03 and higher:
Thin Provisioning
Dynamic
Provisioning for
Mainframe
Smart Tiers
Smart Tiers Z
MCU/RCUOFFEnables/disables output of in-band audit logs.Open and
Mainframe
757
Mode 757 = ON:
Output is disabled.
Mode 776 = OFF (default):
Output is enabled.
Notes:
1. Mode 757 applies to the sites where outputting the In-band
audit logs is not needed.
2. When this option is set to ON
- There is no access to SM for the In-band audit logs, which
can avoid the corresponding performance degradation.
- SM is not used for the In-band audit logs.
3. If outputting the In-band audit log is desired, set this mode to
OFF.
RCUOFFThis mode enables to settle the data to RCU according to the time
stamp specified in the command when a Flush suspension for an
EXCTG is performed from BCM.
Continuous Access
Journal Z
762
(On RCU side,
consideration in
Mode762 = ON: Takeover is
required for
setting)
The data is settled to RCU according to the time stamp specified
in the command.
Mode 762 = OFF (default):
46 Functional and operational characteristics