Go to main content
Oracle® ZFS Storage Appliance Analytics Guide, Release OS8.7.0

Exit Print View

Updated: March 2017

When to Add More Read Cache Devices (BUI)

Use the following procedure to determine if you need more read cache devices for the appliance.

Before You Begin

Go to Maintenance > Hardware to identify which chassis and slots contain read cache devices.

  1. Create a worksheet as described in Creating a Worksheet (BUI).
  2. Click the add icon image:icon indicating an item can be added next to Add statistic.
  3. Go to DISK > I/O operations > Broken down by disk.
  4. Select a read cache device.
  5. Click the drilldown icon image:icon indicating that you can drilldown on a statistic and select Percent utilization.
  6. Repeat steps 4 and 5 for all existing read cache devices.
  7. Wait at least 10 minutes.
  8. Examine the graph(s).

    You may want to add more read cache devices when existing devices are 90% utilized.