Mode
Category
Description
Default
MCU/RCU
1058
Universal
Replicator
TrueCopy
global-active
device
This mode can change differential BMP management from
SM to hierarchical memory so that the number of pairs to
be created on a system and user capacity used for pairs
increase.
•
For mainframe systems, all pairs can be managed in
hierarchical memory so that pairs can be created by all
LDEVs.
•
For open systems, pairs that can only be managed in
SM use SM so that the number of pairs that can be
created using non-DP VOLs increases.
Mode 1058 = ON:
•
SOM1050 is set to ON
•
SOM1050 is set to OFF
Mode 1058 = OFF (default):
•
SOM1050 is set to ON
•
SOM1050 is set to OFF
Notes:
1.
Depending on the I/O pattern, I/O response might be
affected.
2.
Depending on the condition, initial copy time might
be affected.
3.
The mode is related to SOM1050.
4.
OPEN non-DP VOLs do not support hierarchical
memory differential management so that the mode
cannot be applied.
5.
To downgrade the microcode, the procedure
described in Maintenance Manual Function ID 01:03
described in 03 MICRO-FC. is required. Refer to the
manual before applying the mode.
6.
The mode is applied when increasing the number of
pairs that can be created on a system or the user
capacity for pairs is desired.
7.
The differential BMP managed in hierarchical memory
does not use the shared memory, but the differential
data is managed in a pool with which the volumes
are associated. For the pool capacity necessary for
the differential data management, refer to
“Differential Data” in the Hitachi TrueCopy® User
Guide, Hitachi TrueCopy® for Mainframe User Guide,
Hitachi Universal Replicator User Guide, Hitachi
Universal Replicator for Mainframe User Guide, and
the Global-Active Device User Guide
8.
Before using this SOM to increase pair volumes on
the storage system, reexamine the resource on the
storage system to make sure all performance
requirements are met.
OFF
Both
1070
global-active
device
The mode changes the processing for a group operation
with GAD consistency group.
Mode 1070 = ON:
The status change of all pairs in a consistency group is
performed for 50 msec.
OFF
Both
System option modes
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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 ...
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