Mode
Category
Description
Default
MCU/RCU
3.
SIMs for JNL full (RC=DCE0 and DCE1) on MCU are
reported to the host connected with MCU.
4.
SIMs for JNL full (RC=DCE2 and DCE3) on RCU are
reported to the host connected with RCU.
689
TrueCopy for
Mainframe
ShadowImage
for Mainframe
This option is used to slow down the initial copy and resync
copy operations when the Write Pending rate on RCU
exceeds 60%.
Mode 689 = ON:
The initial copy and resync copy operations are slowed
when the Write Pending rate on RCU exceeds 60%.
* From RAID700, if the CLPR write pending rate where the
initial copy target secondary volume belongs to is not over
60% but that of MP PCB where the S-VOL belongs to is
over 60%, the initial copy operation is slowed down.
Mode 689 = OFF (default):
The initial copy and resync copy operations are not slowed
down when the Write Pending rate on RCU exceeds 60%
(the same as before).
Notes:
1.
This mode can be set online.
2.
The micro-programs on both MCU and RCU must
support this mode.
3.
This mode should be set per customer’s requests.
4.
If the Write Pending status long keeps 60% or more
on RCU, it takes extra time for the initial copy and
resync copy to be completed by making up for the
slowed down copy operation.
5.
From RAID700, if the Write Pending rate of CLPR
where the initial copy target secondary volume
belongs to is not over 60% but that of MP PCB where
the S-VOL belongs to is over 60%, the initial copy
operation is slowed down.
OFF
690
Universal
Replicator,
Universal
Replicator for
Mainframe
This option is used to prevent Read JNL or JNL Restore
when the Write Pending rate on RCU exceeds 60% as
follows:
•
When CLPR of JNL-Volume exceeds 60%, Read JNL is
prevented.
•
When CLPR of Data (secondary)-Volume exceeds 60%,
JNL Restore is prevented.
Mode 690 = ON:
Read JNL or JNL Restore is prevented when the Write
Pending rate on RCU exceeds 60%.
Mode 690 = OFF (default):
Read JNL or JNL Restore is not prevented when the Write
Pending rate on RCU exceeds 60% (the same as before).
Notes:
1.
This mode can be set online.
2.
This mode should be set per customer’s requests.
OFF
System option modes
149
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
Содержание F1500
Страница 12: ...12 Preface Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 50: ...50 Introduction Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 106: ...106 Site preparation Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 120: ...120 Troubleshooting Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 132: ...132 Specifications Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 182: ...182 System option modes Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 204: ...204 Glossary Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 207: ...Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...