HP 3PAR Management Console 4.5.1 Software User Guide

Y-Axis UnitsChart Type
Average number of dirty pages.Dirty Pages
Maximum number of dirty pages.Max Dirty Pages
A table below the charts displays the following statistics:
DescriptionColumn
The date and time usage information was collected. (Shown only for values over time chart
types.)
Time
Number of reads that hit in the cache.Read Hits/s
Number of writes for which the page is already in cache AND is dirty (has previously written
data that has not yet been flushed to disk).
Write Hits/s
Total number of reads per second.Reads/s
Total number of writes per second.Writes/s
Total number of (reads + writes) per second.RWs/s
Percentage of reads (out of total reads) that hit in the cache.Read Hit %
Percentage of write (out of total writes) that hit in the cache.Write Hit %
Number of lines locked in the cache per second.Lock Blk/s
Free space for the cache.Free Pages
Number of clean cache pages (valid data on page).Clean Pages
Number of dirty pages that have been modified exactly 1 time. A page is dirty when it has
been modified in cache but not written to disk.
Write1 Pages
Number of dirty pages that have been modified more than 1 time.WriteN Pages
Number of pages scheduled to be written to disk.Write Scheduled Pages
Number of pages being currently written by the flusher to disk.Writing Pages
During node down, number of dead node pages recovered that have to be written to disk.Recov Pages
The number of delayed acknowledgments per second for NL drives.NL Dack/s
The number of delayed acknowledgments per second for 10,000 RPM FC drives.FC10 Dack/s
The number of delayed acknowledgments per second for 15,000 RPM FC drives.FC15 Dack/s
The number of delayed acknowledgments per second for SSD drives.SSD/s
The number of dirty pages for NL drives.NL Dirty Pages
The number of dirty pages for 10,000 RPM FC drives.FC10 Dirty Pages
The number of dirty pages for 15,000 RPM FC drives.FC15 Dirty Pages
The number of dirty pages for SSD drives.SSD Dirty Pages
The maximum number of dirty pages for NL drives.NL Max Dirty Pages
The maximum number of dirty pages for 10,000 RPM FC drives.FC10 Max Dirty Pages
The maximum number of dirty pages for 15,000 RPM FC drives.FC15 Max Dirty Pages
The maximum number of dirty pages for SSD drives.SSD Max Dirty Pages
For values at a specified time chart types, the table also displays the node number.
Controller Node Cache Performance report for values over a time interval:
426 Tracking Performance