Greetings, On 3/17/11, bergman@xxxxxxxxxxxx <bergman@xxxxxxxxxxxx> wrote: > The pithy ruminations from Digimer <linux@xxxxxxxxxxx> on " > Tripp Lite switched PDU fence agent; exists?" were: > > > > Finally, I'd like to warn people away from using the TrippLite PDU model > PDUMH15ATNET as a fencing device. While it seems to have nice features, it > has > a design choice that is a serious problem with fencing--when a command is > given to power down an outlet, there is a "random" delay (observed to be > about 17 to 35 seconds) before that command is executed. This has been > acknowledged by TrippLite support as a design choice, with no option or > setting > to override this behavior. > This "powerfence" should come nowhere near a production cluster. Such randomness can play havoc in the predictability of availability: Just think two of those strips (A,B) used for each of the redundant power inputs and they not being switched off together. can get _very_ messy. Just my 2paise Regards, Rajagopal -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
