HP Storage Mirroring V5.1 Software - Manual (Page 92)

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Byte Limit—The byte limit specifies the maximum number of bytes that can be sent before
ending the transmission session. When the byte limit is met, Storage Mirroring will
automatically stop transmitting data to the target. Any data that still remains waits in the
source queue until the transmission is restarted. When used in conjunction with a session start
option, you can explicitly define how much data is being sent at a given time. Specify the
maximum number of bytes that can be sent before ending the Storage Mirroring transmission.
5. Schedule a transmission window to establish a period of availability for all Storage Mirroring
transmissions. You can specify a begin and end time for all Storage Mirroring transmissions.
When a transmission window is in effect, all other start and stop criteria are bound by this
window. This means that Storage Mirroring will never transmit data outside of an established
window, regardless of other transmission settings. For example, if you set a window of
availability from 9 p.m. to 4 a.m. and a start option to initiate transmission at 5 a.m., the
window option will override the start option and no data will be sent at 5 a.m. Select the
Window option in the Limit Type box.
Define a window to control Storage Mirroring transmissions by enabling the feature and then
specifying both window options.

Enable Transmission Window—This option specifies whether a transmission window is in
use.
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Open window time—Specifies the time, formatted for AM or PM, when the transmission
window will open, allowing transmission to begin.

Close window time—Specifies the time, formatted for AM or PM, when the transmission
window will close, stopping all transmission.
6. Click OK to save the settings.
NOTE: The transmission start and stop criteria should be used in conjunction with each
other. For example, if you set the Queue Threshold equal to 10 MB and the Byte
Limit equal to 10 MB, a network connection will be established when there is 10
MB of data in the queue. The data will be transmitted and when the 10 MB Byte
Limit is reached, the network connection closes. This is useful in configurations
where metered charges are based on connection time.
NOTE: Setting a transmission window by itself is not sufficient to start a transmission. You
still need to set a start criteria within the window.