The lowly Rack PDU / Power Strip / UPS

Discussion in 'DIY Server and Workstation Builds' started by Robert Fontaine, Jun 28, 2018.

  1. Robert Fontaine

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    I've been looking for a decent 1U Power Strip -
    Basics:
    - 15AMP
    - 8 standard plugs on the back
    - 1 or 2 plugs on the front
    - reasonable surge protection/fuse
    - reasonable price / high value

    Nice to haves:
    - power meter on the front
    - more than one zone/switch
    - order switching ( not sure what this is called but having things turn on one at a time).

    I will probably be purchasing a UPS to put behind this at some point so I am not really looking for the extended feature set that will come with a line interactive UPS.

    Looked at the art 4x4 and the cyber power basic. Any others that I should be looking at?
     
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  2. Robert Fontaine

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    I'm not looking for people selling things... I'm looking for recommendations from guys who have built racks.
     
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  3. Blinky 42

    Blinky 42 Active Member

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    APC/Schneider Electric, Eaton, TrippLite (cheaper but lower quality in my experience) all make passive, metered, and switched 1U PDU's in the most common voltages.
    The switched ones usually can be configured to stagger or group outlets for turn on/off.

    Typically only the passive models will have plugs on both sides, an exception that comes to mind it TrippLite automtic transfer switch PDU's that have > 8 switched outlets in 1U with outlets on both sides.
     
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  4. Robert Fontaine

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    Thanks blinky just what I was looking for.
     
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  5. Mam89

    Mam89 Member

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    I was actually looking at some very similar equipment as I want to start "finalizing" (heh, I use that word loosely) my home lab rack.

    Found the following just looking around the fleebay:

    APC AP7900 Switched Rack PDU, 1U, 15A, 100/120V, (8)5-15 | eBay

    Does anyone have any tips or tricks for monitoring/automating the apc units like this? Good, bad, ugly, etc?
     
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  6. Blinky 42

    Blinky 42 Active Member

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    We have a few hundred of the AP70xx units for work. You can control them with a telnet/ssh based CLI, a web UI or SNMP pretty easy. SNMP would be the most flexible for automating it with normal scripting languages, although you can hack up code to use the other 2 methods.
    Be sure you test them out fully when you get them used, there are a few failure modes that are not apparent just plugging them into the wall and waiting the 2-3 seconds for the relays to turn on all the outlets.
    I would recommend going in with the serial cable and reset the unit to factory defaults and then manually toggle each outlet to make sure that work. Then update the firmware to a recent version to test out the controller's insides fully.
     
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  7. StevenDTX

    StevenDTX Active Member

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    I second this. I bought a 7901 off of ebay a couple of months ago and the management interface rebooted itself every 15-20 seconds, even with an updated firmware.
     
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  8. epicurean

    epicurean Member

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    What about the AP7921? any issues with this particular model?
     
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  9. Blinky 42

    Blinky 42 Active Member

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    The AP7921 is functionally the same as the AP7901, but with C13/C14 connectors. It is handy as it can work on 115/208/240 well, I set them up in the office with 115 and deploy them around the world without problems.
     
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  10. epicurean

    epicurean Member

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    @Blinky42 . Thanks for your feedback.
    I got a unit(AP7921) off ebay, but I cannot figure out its previous static ip address to link to it. Unfortunately it did not come with the configuration cable. Its definately not getting an ip address from my DHCP server.
     
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