Viewing the Replication Write I/O Report
The Replication Write I/O report summarizes the amount of data that has been written to the secondary data center for the specified LUN, and the average latency (in milliseconds) of write operations to the secondary data center for the specified LUN. This report includes the latency of the inter-data center network and the latency of the storage array being used on the secondary data center.
What This Report Tells You
The Replication Write I/O report answers these questions:
• How much data has been synchronized between data centers?
• How much data is being replicated per second between data centers?
• What is the average replication latency between the primary and secondary data center?
To view the Replication Write I/O report
1. Choose Reports > Storage: Replication Write I/O to display the Replication Write I/O page.
2. Customize the report using the controls described in this table.
Control | Description |
LUN | Select the LUN whose statistics you want to see from the drop-down list. |
Period settings | Click 5m (last five minutes), 1h (last hour), 1d (last day), 1w (last week), or All (last month). For a custom time period, specify the start and end times in the fields immediately below these settings. Use the following format: yyyy/mm/dd hh:mm:ss. You can also use the adjustable slider at the bottom of the graph. |
Report type | Toggle the reports to be displayed by clicking the type heading. The types of reports available depends on the type of report you selected above. |
About Report Graphs
In bar-graph and line-graph reports, the x-axis (or tick mark) plots time, according to the interval you select. The y-axis plots the metric of interest, such as gigabytes of bandwidth, percent of data reduction, connection counts, and so on.
The right margin of the graph points to the value on the y-axis (for example, the percent) that is the average value for the time period selected.