Recommended PSU + Router + What else needs to be in a 42U colo rack?

Initially Posted by porcupine

I am shocked to listen to this recommendation… What’s your failure fee on switched PDU’s?We’ve a couple of hundred in play, and free < 1/12 months between a number of APC fashions. The “switching characteristic” by no means fails to work (any port failing management, is taken into account a failure of the unit, and when that occurs, they just about at all times fail on), and “completely correct” documentation is required no matter some other possibility regardless of how you chop it…It’s miles extra widespread to listen to clients complain that their OOB failed, they usually use the PDU to recuperate. Should you’re someplace with costly distant fingers, that is a considerably preferable possibility, versus paying somebody over-qualified, to go push a button (which once more, you greatest pray your documentation is correct, otherwise you’re simply as SOL).

PDUs outright failing we have seen moreso on Tripplite, therefore why I like to recommend APC. Failures usually present as the whole PDU rebooting spontaneously, which I assume has one thing to do with the switching performance having a freakout second. It is arduous to think about {that a} non-switched PDU would “reboot”, because it has no capacity to show off energy to something.For “switching failures”, except for the reboot concern I discussed, I am extra which means the controller card fails completely fairly than being unable to change a selected port.OOB / IPMI fails fairly usually. Often it is nonetheless working properly sufficient that it may be restarted over the community or from throughout the OS to get it absolutely behaving correctly. Typically it does requires a tough energy cycle, in that case we simply ship somebody up to do this fairly than hope that it is related to one of many few switched energy ports that is working correctly, and hope the facility documentation is correct.Additionally, we now have lots of multi-node chassis, the place to “energy cycle” by way of PDU would require you energy off a number of servers as an alternative of simply the one you are eager to reboot. The PDU reboot characteristic is completely pointless for these, as the right technique to arduous energy cycle these is to tug the sled out of the chassis and plug it again in. I’d say this makes up greater than half our complete servers.We made an enormous effort to attempt to get all our distant cycle pdu ports configured correctly, get firmwares up to date, doc all the things, and so forth. Ultimately you simply had a lot of the distant entry modules both had been failed, could not be up to date, or, you’d replace the community settings however they’d lose the settings a number of occasions. It was lots of effort for no profit. Once more, Tripplite is manner worse than APC right here, however APC was not clean crusing both.

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