Mode
Category
Description
Default
MCU/RCU
newly assigned system option Mode as individual function
for specific customer.
Mode 308 = ON
SIM RC 2180 is reported which is compatible with older
Hitachi specification
Mode 308 = OFF
Reporting is compatible with IBM - Sense Status report of
F5.
310
Common
Mode 310 = ON:
The monitoring timer for MP hang-up is 6 seconds and
returning a response to the host within 8 is guaranteed.
Mode 310 = OFF (default):
The monitoring timer for MP hang-up remains 15 seconds
(RAID500/RAID600) or 8 seconds (RAID700/RAID800/
HM700).
Notes:
1.
This mode applies to a site where strict host response
performance is required.
2.
If a hardware failure occurs when the mode is set to
ON, the time until MPB blockage is determined is
shorter than usual.
OFF
448
Universal
Replicator
Universal
Replicator for
Mainframe
Mode 448 = ON: (Enabled)
If the SVP detects a blocked path, the SVP assumes that
an error occurred, and then immediately splits (suspends)
the mirror.
Mode 448 = OFF: (Disabled)
If the SVP detects a blocked path and the path does not
recover within the specified period of time, the SVP
assumes that an error occurred, and then splits (suspends)
the mirror.
Note:
The mode 448 setting takes effect only when mode 449 is
set to OFF.
OFF
449
Universal
Replicator
Universal
Replicator for
Mainframe
Detecting and monitoring path blockade between MCU and
RCU of Universal Replicator/Universal Replicator for z/OS
Mode 449 = ON:
Detecting and monitoring of path blockade will NOT be
performed.
Mode 449 OFF (default):
Detecting and monitoring of the path blockade will be
performed.
* Newly shipped DKC will have Mode 449 = ON as default.
140
System option modes
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide