The Disks drilldown displays detailed information about the logical and physical disks on the system.
To see the Disks drilldown
Click Monitor | Disks.
To investigate...
Look at the...
Logical Disk Activity
Logical Disk Activity page
Shows a recent summary of the rate at which read requests have been sent to each logical disk.
Shows a recent summary of the rate at which write requests have been sent to each logical disk.
Shows a recent summary of the number of read and write requests that have been sent to each logical disk. This chart is the sum of the Disk Reads and Disk Writes.
Shows the number of I/O requests that were queued for each logical disk.
Disk queue length indicates how heavily loaded a disk subsystem is. High queue lengths mean the disks are struggling to process the I/O load being put on them.
Shows how long it is taking for data to be transferred between disk and memory, and includes both Disk Reads and Disk Writes.
If disk transfers are taking consistently longer than 50 ms, a disk bottleneck may be developing.
Shows how busy overall the individual logical disks are.
Tip: Right-click the grid data and select View as Grid to view the data as a grid.
Physical Disk Activity
Physical Disk Activity page
Shows a recent summary of the rate at which read requests have been sent to each physical disk.
Shows a recent summary of the rate at which write requests have been sent to each physical disk.
Shows a recent summary of the number of read and write requests that have been sent to each physical disk.
Shows the number of I/O requests that were queued for each physical disk.
Disk Queue Length indicates how heavily loaded a disk subsystem is. High queue lengths mean the disks are struggling to process the I/O load being put on them.
Shows how long it is taking for data to be transferred between disk and memory. This graph includes Disk Reads and Disk Writes.
If disk transfers are taking consistently longer than 50 ms, a disk bottleneck may be developing.
Shows how busy overall the individual physical disks are.
Tip: Right-click the grid data and select View as Grid to view the data as a grid.
Logical Disk Space Usage
Logical Disk Space Usage page
Shows a graphical view of used and available space on all logical drives.
Tip: To switch between Disk Space by Gigabytes and Disk Space by Percentage view, click the arrow next to the chart name.
The relationship between physical and logical disks and to view summary information for each disk
Disk Summary page
Shows summary information about the physical disks on the current system.
For each physical disk detected, disk summary information is displayed in the columns of a single table (grid).
Tip: To see information about the logical disks associated with each physical disk, click the disk's entry in the grid.
Shows summary information on the logical disk(s) associated with each physical hard disk on the system.
Select a disk in the Physical Disks grid to see information about the associated logical disk.
The growth of files you specified in the Files Options
File Sizes page
Shows information on the size of files. See "Files Panel" (page 1) for more information.
Tip: When looking at charts, click an item in the legend to highlight its series (line) in the chart.
Disk Reads chart