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Questions tagged [power-distribution-unit]

Questions related to power distribution units (PDU) or mains distribution unit (MDU) which are devices fitted with multiple outputs designed to distribute electric power, especially to racks of computers and networking equipment located within a data center.

A power distribution unit (PDU) or mains distribution unit (MDU) is a device fitted with multiple outputs designed to distribute electric power, especially to racks of computers and networking equipment located within a data center.

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Order of connections between UPSs and PDUs

Half of the equipment on my server cabinet (data servers, networking) are critical and need to be backed up by UPS's, while the other half of it is non-critical (high-load simulations that only take 3-5 minutes per job and can accept downtime). My…
elleciel
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PDU management interface has low availability - product flaw or isolated issue

Our colocation provider has supplied us with APC AP7932 switched 0U PDUs as part of several cabinets they provide us. We have had a lot of trouble with the network management aspect of these PDUs, which I'll describe below. We are moving to cage…
HikeOnPast
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A plan to mitigate PDU failures?

A client just experienced a complete failure of an APC AP7911A switched/metered rack power distribution unit (PDU). This obviously took all of the connected equipment down with it. The equipment is fine, as well as the upstream UPS units. In…
ewwhite
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Load distribution across PSUs on a Dell PowerEdge

What does the current distribution look like on a Dell PowerEdge R630 (or any for that matter) when using 2 power supplies? I assume it will either draw continually from both, distributing the load, or it will favour one over the other. If the…
SimonJGreen
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UPS systems in parallel for redundancy and/or capacity, generator as backup, ATS,

I am about to upgrade our server room's power plan and would kindly ask you for your help with a proper, optimal design / advice on "good practice" approach. Please note that our business is small, but would nevertheless want to have a solid…
Charlie
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APC Switched PDU: group outlets on different PDU's

We have newer gen 2 switched PDU's and I noticed that they have an ability to daisy chain the PDU's. I can see that dasily chaning allows us to have a central access point for the PDU's which is nice. The one thing my team and i were thinking and…
Eric C. Singer
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Zero-U PDU preferred mount location

Looking for some experience from the field - The rack I manage has two zero-U vertical PDU's supplied by the datacenter. They have fitted one on each side (one on the left, one on the right). The rack appears designed so it can also accomodate…
Nathan O'Sullivan
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Correct UPS and PDU sequence

I'm pretty inexperienced when it comes to setting up power for a network rack. I have a location that has a dedicated 20 amp circuit with a LP-20P socket. I have a APC UPS 3000XL rackmount UPS and a TripLite PDUMH20 PDU. I'm looking at the current…
user62491
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Liebert MPH SNMP Poweroff

Super specific question, but here it goes. We have several Liebert MPH rack PDU units with the necessary Liebert 'RPC' cards intalled to allow for SNMP polling. Does anyone have experience with remotely powering off either a branch or receptacle…
volatile900
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PDU With Configurable AMP Limit

I have a 20 AMP/120V circuit. The only device plugged into this circuit is a 1000 Watt Dell UPS. Right now several devices plug directly into the 1000 Watt UPS. I wanted to order a PDU to help untangle my cabling a bit. Problem: If I order a 16…
user426724
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Will a NEMA L5-20P plug work in a NEMA L5-30R receptacle?

I need to purchase a UPS & PDU and want to know if they will be compatible. Will the plug of the PDU be able to plug into this UPS? The UPS: APC Smart-UPS X 3000VA Rack/Tower LCD 100-127V with Network Card The PDU: Rack PDU, Basic, Zero U, 20A,…
jftuga
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Cold Booting a Server over IP KVM - Which Type of PDU is Required?

If I get an IP KVM, what type of Power Distribution Unit (PDU) would I need in order to perform cold boots of a server? Would I need a switched type of PDU or will any PDU be okay? I am looking for a cheap solution so that I can reboot a single…
Techboy
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APC switched rack PDU: Startup outlet state

I have an APC Switched Rack PDU powering a number of servers in a remote datacentre. After a recent power outage, I noticed that the outlets did not automatically default to the On status once power was restored. Having reviewed the Web UI, I cannot…
Ian Gregory
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Power strategy for first server rack

We are about to install our first server and networking rack at my office. I'm more of a programmer than a sysadmin, so I'm learning as I go. Let me start by saying that it's just a router, patch panel, and PoE switch that will be going on the rack…
Jon
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How to upgrade APC Rack PDU?

I have an APC Rack PDU AP7920 (hardware revision B2, manufactured 07/21/2012). When I log in via telnet I get: American Power Conversion Network Management Card AOS v3.3.4 (c) Copyright…
divB
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