Storage Mirroring User Guide

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TGMirrorCapacity
Low
Minimum percentage of system memory that can contain mirror data before the target signals the
source to resume the sending of mirror operations.
Values: 1-75
Default: 15
The maximum value forTGMirrorCapacityLow is either 75 or TGMirrorCapacityHigh, which ever
is lower.
TGRetryLocked Minimum number of seconds to wait before retrying a failed operation on a target
Values: 0-65536
Default: 3
TGThreadCount Number of threads actively writing files to disk. This option takes advantage of multi-thread and
multi-processor capabilities. This is generally 2-4 threads per processor.
Values: 0 - x where x can be up to 5 times the number of disks in your system
Default: 4
TGUnfinishedOp
Event
Specifies whether or not unfinished operations on the target are logged to the Event Viewer
Values:
(
0) Unfinished operation messages are not logged
(
1) Unfinished operation messages are logged
Default: 0
TGWriteCache Specifies whether or not Storage Mirroring uses the intermediate cache
Values:
(
0) Bypass the intermediate cache and write directly to diks
(
1) Do not bypass the intermediate cache
Default: 1
TGWriteFailure
BeforeNotification
Specifies the number of times an operation will be retried on the target before a notification is
sent to the source to update the
Target Status field of the Management Console.
Values: 0-1024
Default: 10
If you change the setting to 0, the notification will be disabled.
Changing this option will only affect how the status is changed on the
Target Status field of the
Management Console. To solve the underlying issue of why the operations are failing will require
investigation into the Storage Mirroring log files.
UNetPort Port connection for UDP communications
Values: 1025 - 65535
Default: 1100
If you change this value, the source service must be stopped and restarted to implement the
change.
UpdateInterval Interval, in seconds, at which the Failover Control Center updates the monitored machines
display
Values: 1 - 9999
Default:
1
UpgradeCode Used by the Storage Mirroring installation program to maintain the installation settings for an
upgrade
Program Setting Description