APC - AP7930 Switched Rack PDU

Mar 29, 2009

Have an issue that I am dealing with, APC support couldn't really help me get anywhere either.

Here is the story:

I am leasing a rack at Equinix in Sunnyvale.

It came with 3 APC Switched rack PDUs.

By the looks of it, they were used by the previous customer.

APC sent me a serial to RJ11 programming cable, and I have been trying to use HyperTerminal, but I get a blank screen when I attempt to connect.

I have tried arp commands, but, again, it looks like the device was previously configured.

I downloaded this: [url] hyper terminal software.

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Switched Rack PDU AP7921

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I have a Switched Rack PDU AP7921 in use and it was working now for several months without any problems. But sice yesterday I have a problem with the network connection. I was not able to connect to the PDU anymore, after pressing the reboot button it was working again. But after a few minutes, the problem appeared again.

Is this a common problem of this APC PDUs? Is there a fix, for example a firmware upgrade or is it broken?

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Aug 26, 2007

I have an APC AP7930 which just randomly stopped showing the amperage of the circuit. When I log into the device I see:

Code:
Communication Status

Communication has been lost to the device!

and in the logs see:
Code:

08/26/2007 11:00:53 Switched Rack PDU: Communications lost.
08/26/2007 10:55:21 Switched Rack PDU: Communications lost.
08/26/2007 10:49:39 Switched Rack PDU: Communications lost.
08/26/2007 10:27:58 Switched Rack PDU: Communications lost.
08/26/2007 09:57:58 Switched Rack PDU: Communications lost.

Anyone ever see this on the AP793X series? My next step is to contact APC as think the unit might be under warranty. But it definitely will not be fun to migrate power for the some 20 devices connected to it...

I recently upgraded the firmware and rebooted the management interface several times to no avail. Powering down the PDU is not an option at this point.

This is the first time I've had an issue with an APC product. This isn't a huge issue. But I DO rely on amperage readings to keep from tripping breakers and keep power even among cabinets...

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for example :
00s - power restored, port #1 on
30s - port #2 on
1m - port#3 on
1m30s - port#4 on
... and so on

The only option I see in the settings is "Power On Delay". I'm not sure if this delay only applies when I submit "On Delayed" action, or does it also apply to when the power from the provider is restored.

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I have a working PHP on the server, it is enabled and the sites are working. However they are not synced with the plan. If I try to sync it it shows:

PropertySubscription valuePlan valueAvailable valueAffected sites PHP supportswitched off switched onswitched off mydomain.com

Now how do I change the available value to be switched on?

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Our servers (Dell PowerEdge) have dual power supplies, and I assume the best thing is to plug one power supply into each circuit, so things stay up even if a circuit fails.

So, how would this work if we want to reboot? The servers can run on only one power supply, so does that mean we have to click reboot on the web interface of each PDU at exactly the same time?

I've never worked with PDUs before.. just cheap power strips and a call to the datacenter

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> dig auringostaitaan.fi @5.9.57.170 soa +short
robotns3.second-ns.com. torsten.ruger.gmail.com. 0 10800 3600 604800 10800

You can see the test here [URL] .... when you enter the domain auringostaitaan.fi

In trying to fix this i have switched the dns off,changed the mode, enabled RIPE, but i get what it says [URL] ....

Note: See the sample of SOA serial number generated with the selected format. If the resulting number is less, than the current zone number, the modification may cause temporary malfunction of DNS for this domain. Zone updates may be invisible to Internet users for some time.

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Shouldn't turning the DNS functionality off in Plesk remove the zone from the slave DNS server?

When a domains DNS functionality is turned off, it removed the zone info from the master, but no command is issued to remove it from the slave??

Domain that is trying to sync/transfer: example.com
Plesk/Master server: 111.11.11.111
Slave DNS: 222.222.22.222

Code:
May 6 08:51:39 ns2 named[1178]: zone example.com/IN: refresh: unexpected rcode (REFUSED) from master 111.11.11.111#53 (source 0.0.0.0#0)
May 6 08:51:39 ns2 named[1178]: zone example.com/IN: Transfer started.
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[Code] ...

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