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Re: [Linux-cluster] Fencing Hardware



David Brieck Jr. wrote:

On 10/24/06, isplist logicore net <isplist logicore net> wrote:

> Is there a reason you're not considering power fencing? We use APC
> switched PDUs for our fence device and they work beautifully.

No, I'll consider anything that's not too costly up front, that allows growth
and that's fairly easy to work with.

mike


We buy all our hardware through dell so you might be able to find
better prices than those listed here, but any of the APC Switched PDUs
will work for you. Of course you need to make sure they fit into your
data center's power grid as appropriate, but you can pickup a 24 port
PDU for between $600 and $700 depending on your power setup.

http://accessories.us.dell.com/sna/category.aspx?c=us&category_id=6250&cs=555&l=en&s=biz&nf=18037~0~130093&~ck=anav

We have dual power supples in all our servers so we use two ports per
server since the rack is on two different circuits, but if you used
the Y cable and weren't worried about that level of redundancy then 24
ports would go a long way.

In addition, of all the available agents in the cluster suite, apc has alot to be said for it. The agent was tested at the apc facility in Rhode Island last year on all of their current 79XX series switches and it did great. A new agent is being coded right now that supports outlet naming and outlet grouping. There is also a really dependable snmp version of the apc fence agent that ships with cluster suite (but requires doing a couple of chores to use it -- instructions are provided in a README).

We work hard to keep all of the agent scripts current with new firmware revs and such -- but I guess the proximity of APC and the dependability of the agent (It gets looked at alot) and the switches make them a pretty safe fencing choice.

PS: I hold no interest in APCC! My only interest is in reliable fencing -- whatever your choice may be :)

-Jim


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