IP Mirroring
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Continuous Access Storage Appliance Installation and Maintenance Guide
Managing worker threads
This section describes worker threads and how to use them for IP mirroring requests. It
describes the following topics:
■
■
Adjusting the number of worker threads
■
Using worker threads for many-to-one IP mirroring
Worker threads overview
The appliance software uses worker threads to process I/O requests. By default, each appliance
node has 200 worker threads; typically, 100 are reserved for IP mirroring requests and 100 are
reserved for non-IP mirroring requests. The number of worker threads is the same whether the
appliance node is a mirror source or a mirror target. When a worker thread is processing a
request, it is unavailable until it completes the request.
Note:
If all worker threads are in use or busy, other requests must wait to be processed until a
worker thread is available.
Adjusting the number of worker threads
If a customer requires more worker threads for IP mirroring requests, you can adjust the
number of threads:
1. Ensure that the hp OV CASA Console window is open in administrative mode.
2. On the console window, click service viewer.
The Services window opens.
3. Select the RPIC DPF service.
4. Click Stop and then click Apply.
5. Ensure that the service has stopped.
6. Repeat steps 4 and 5 for the SMS service.
7. Select the RPIC DPF service again and click Start.
8. In the Startup Parameters box, enter the following command (
[num]
is the number of
worker threads for IP mirroring):
-ipt [num]
9. Click Apply to restart the RPIC DPF service.
10. Select the SMS service, click Start, and click Apply.
11. Close the Services window.
