Mode
Category
Description
Default
MCU/RCU
atible
FlashCopy
®
V2,
Snapshot,
Volume
Migration,
Universal Volume
Manager
exceeding 60%, so that the host performance is not
affected.
ShadowImage, ShadowImage for Mainframe, Compatible
FlashCopy
®
V2, Snapshot, Volume Migration, Universal
Volume Manager
Mode 467 = ON:
Copy overload prevention. Copy processing stops when the
percentage of “dirty” data reaches 60% or higher. When
the percentage falls below 60%, copy processing restarts.
Mode 467 = OFF:
Normal operation. The copy processing slows down if the
dirty percentage is 60% or larger, and it stops if the dirty
percentage is 75% or larger.
Caution:
This mode must always be set to ON when using an
external volume as the secondary volume of any of the
above-mentioned replication products.
Note:
It takes longer to finish the copy processing because it
stops for prioritizing the host I/O performance.
471
Copy-on-Write
Snapshot
(Earlier than
70-05-0x-00/00)
Copy-on-Write
Snapshot, Hitachi
Thin Image
(70-05-0x-00/00
or higher)
Since the SIM-RC 601xxx that are generated when the
usage rate of Pool used by Snapshot exceeds the threshold
value can be resolved by users, basically they are not
reported to the maintenance personnel. This option is used
to inform maintenance personnel of these SIMs that are
basically not reported to maintenance personnel in case
these SIMs must be reported to them.
SIMs reported by setting the mode to ON are:
•
SIM-RC 601xxx (Pool utilization threshold excess)
(Earlier than 70-05-0x-00/00)
•
SIM-RC 601xxx (Pool utilization threshold excess)/
603000 (SM Space Warning) (70-05-0x-00/00 or
higher)
Mode 471 = ON:
This kind of SIMs is reported to maintenance personnel.
Mode 471 = OFF (default):
This kind of SIMs is not reported to maintenance
personnel.
Note:
Set this mode to ON when it is required to inform
maintenance personnel of the SIM-RC (*)
SIMs reported by setting the mode to ON are:
•
SIM-RC 601xxx (Pool utilization threshold excess)
(Earlier than 70-05-0x-00/00)
OFF
System option modes
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Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide