Re: serial line for heartbeat

Scott Henry <[email protected]>
Newsgroups gmane.linux.failsafe
Organization SSO Engineering, Silicon Graphics, Inc.
Message-ID <[email protected]>
>>>>> "M" == Marcus Doemling <[email protected]> writes:

M> It seems FailSafe requires 2 network cards just for the
M> control network.

It strongly recommends 2 network cards for the control/heartbeat
interface, for redundancy and to limit single-point-of-failure
modes. It works with one.

M> It would be great to be able to use a serial connection
M> for heartbeats and one ethernet connection. Like the
M> "heartbeat" package does it. I'm sure it would be a popular
M> option since it saves one network card.

There is too much info gonig across the control connection for a
serial link, and a serial link restricts you to 2 nodes; FailSafe
supports up to 8 nodes.

M> I spend a lot of time studing the guides for FailSafe but
M> finally I have to go with "heartbeat" since I only have
M> 2 network cards on each of my servers.


-- 
 Scott Henry <[email protected]> /  Help! My disclaimer is missing!
 IRIX/Linux MTS,             /  http://reality.sgiweb.org/scotth/
 Silicon Graphics, Inc      /  SGI-One step ahead
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