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How many circuits needed to power an Isilon cluster rack?
We are moving our 6 node Isilon rack to a colocation facility. They want to know how many primary/redundant circuits we need. Does anyone know how many for an Isilon with 4 PDUs inside?
crklosterman
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April 10th, 2017 07:00
Depends on your standard for the datacenter. You'll obviously have separate power drops between the left side of the cabinet and the right side of the cabinet. So at a minimum 2 of the PDU's have to be energized usually from separate power feeds/UPS/generator/substations. If you plan on growing the cluster bigger just go ahead and energize all 4 PDUs, so 4 circuits at 208V 3-Phase in most US datacenters. Not sure if the connectors are 208V-L630 TwistLocks or something similar. Then when you power the nodes in the rack, take half of the power cables to the upper PDUs and half to the lower PDUs. 1 Power supply per node left, and 1 power supply per node right. Then also put one IB switch left, and one IB switch right. Just try and keep it balanced. Make sense?
Hope it helps,
~Chris Klosterman
Principal SE Datadobi
chris.klosterman@datadobi.com