HP XP P9500 Owner's Manual page 29

Table 1 1 System option modes (continued)
Mode Category
Snapshot, Auto
LUN, External
Storage
471 Snapshot
(Earlier than
70-05-0x-00/00)
Snapshot, Fast
Snap
(70-05-0x-00/00
or higher)
474 Continuous Access
Journal, Continuous
Access Journal Z
Description
Business Copy, Business Copy Z, Compatible FlashCopy,
Snapshot, Auto LUN, External Storage
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.
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)
SIM-RC 601xxx (Pool utilization threshold excess)/ 603000
(SM Space Warning) (70-05-0x-00/00 or higher:)
UR initial copy performance can be improved by issuing a
command from Raid Manager/BC Manager to execute a
dedicated script consists of UR initial copy (Nocopy), UR suspend,
TC (Sync) initial copy, TC (Sync) delete, and UR resync.
Mode 474 = ON:
For a suspended UR pair, a TC-Sync pair can be created with
the same P-VOL/S-VOL so that UR initial copy time can be reduced
by using the dedicated script.
Mode 474 = OFF (default):
For a suspended UR pair, a TC-Sync pair cannot be created with
the same P-VOL/S-VOL. For this, the dedicated script cannot be
used.
Note:
1. Set this mode for both MCU and RCU.
2. When the mode is set to ON;
- Execute all of pair operations from Raid Manager/ BCM.
- Use a dedicated script.
System option modes, host modes, and host mode options
Default MCU/RCU
OFF
OFF MCU/RCU
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