HP StorageWorks XP Remote Web Console Software User Manual
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Figure 63 Storage System Option Settings in the Optional Operation Window
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Activities: The number of volumes that can be copied concurrently during the initial copy and
resynchronization operations.
Figure 64 System Option Window
•
Maximum Initial Copy Activities: Specifies the number of volumes that can be copied
concurrently during the initial copy and resynchronization operations. A value within the range
of 1 to 128 can be specified. The default setting is 64 volumes.
Maximum Initial Copy Activities can impact the performance of the primary storage system,
depending on the amount of I/O activity and the number of pairs being registered at the same
time. For example, if you set the maximum initial copy activities to 64 volumes and then add
65 pairs at the same time, the primary storage system starts the first 64 pairs and will not start
the 65th pair until one of the pairs is synchronized. When you change the maximum initial
copy activities setting, the new setting applies to pairs created after the setting was changed,
not to existing pairs.
If the value of Maximum Initial Copy Activities is increased, the time for the initial copy
processing is shortened. However, the host operation may be affected because the write
processing to the tracks in which the copy operation is in progress is forced to wait.
•
Set: Closes the System Option window and then adds the settings to the Preview list.
•
Cancel: Cancels the settings.
Establishing the Relationship between Primary and Secondary Storage
Systems (Add DKC)
The Add DKC window (see
) allows you to associate the primary
storage system and the secondary storage system, and also allows you to establish logical paths
between the two storage systems. Logical paths are used to connect the primary and secondary
storage systems. Both the primary storage system and the secondary storage system use logical
paths to communicate with each other.
One primary storage system can be associated with up to 64 secondary storage systems. Up to
eight logical paths can be configured between one primary storage system and one secondary
storage system. Therefore, one primary storage system can have up to 512 logical paths to
secondary storage systems.
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Configuring Storage Systems and Logical Paths