HP StorageWorks Storage Mirroring Recover Scripting Guide (T5437-96009, November 2009)

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Server Setting Description
PriorityClass
The priority level at which the Storage Mirroring service
runs.
Values: 3
Default: 3
GUI Setting: None
The Storage Mirroring service runs at normal priority by
default, which is adequate in most cases. However, there
are some high-load situations where Storage Mirroring
Recover needs a higher priority in order to move data
through its queues and transmit the data to the target. One
specific example is with bulk inserts to a SQL Server
database. During this operation, SQL Server uses so
much CPU that Storage Mirroring Recover does not get
enough CPU cycles to transmit data as quickly as it
otherwise might. Boosting the priority of the Storage
Mirroring service process to high on the source enables
Storage Mirroring Recover to transmit data as quickly as
possible and results in less data being queued on the
source. This boost usually results in better overall
performance because Storage Mirroring Recover will not
queue as much data to disk, which degrades overall
performance. If Storage Mirroring Recover replication
traffic is not being sent to the target as quickly as possible
during high load processes, boost the priority of Storage
Mirroring Recover on the source. This condition can be
recognized by monitoring queued replication, and network
and CPU utilization. If CPU utilization is high, a lot of data
is being queued, and the utilization of the network
between the source and target is low, that means Storage
Mirroring Recover is not getting enough CPU to transmit
data as quickly as possible.
ProductCode
Used by the Storage Mirroring Recover installation
program to maintain the installation settings for an
upgrade. Do not modify this entry.
ProductName
Used by the Storage Mirroring Recover installation
program to maintain the installation settings for an
upgrade. Do not modify this entry.