Which Stonith Device ?

Hi all,

we are currently planning some linux failsafe clusters and looking for a suitable stonith device.
Looking at the sources there is support for some devices, e.g apc, baytech, rps and so on.
Are there any practical experiences with any of this devices (configuration, price) ? Can anybody recommend one ?
We are planning to use tree clusters with two no nodes on each cluster. Is it advisable to use two stonith devices for each cluster ore can we use one stonith device with many, individual manageable outlets (e.g. apc masterswitch 9212) for some nodes in different clusters ?

Thanks,

Best Regards,

Kai-Uwe Schurig
Senior Systemengineer
T-Systems PCM AG
[email protected]