HP StorageWorks XP Remote Web Console Software - Manual (Page 108)

108 Using journal groups
NOTE: If an error occurs, the right-most column of the Preset list displays the error code. To view
detailed information about the error, right-click the error code, and select Error Detail. An error
message appears providing detailed information about the error.
Figure 48 Change JNL Option pane
• Meta/Data Ratio: Ratio of metadata area to journal data area. For example, if you select 16, the ratio
of metadata area to journal data area is 1:16. If you select 32, the ratio of metadata area to journal
data area is 1:32.
NOTE: In the current version, you cannot change the ratio of metadata area to journal data area.
• Extent: Number of extents.
NOTE: In the current version, the number of extents is always 32 and cannot be changed.
• Inflow Control: Specifies whether inflow of update I/Os to the journal volume is restricted (in other
words, whether to slow delay response to hosts).
• Yes: Inflow is restricted.
• No: Inflow is not restricted.
NOTE: If you select Yes and the metadata or journal data is full, update I/Os might stop.
• Data Overflow Watch (0 to 600 sec): Time (in seconds) for monitoring whether metadata and journal
data are full. This value must be within the range of 0 to 600 seconds.
NOTE: If Inflow Control is No, Data Overflow Watch does not take effect and does not display
anything.
• Copy Pace: Pace (speed) for an initial copy activity for one volume. The default is Low.
• Low: Speed of initial copy activity is slower than Medium and High.
• Medium: Speed of initial copy activity is faster than Low and slower than High.