Metered PDU (SKU?) not metering

[Anonymous user]

Hi,
i just installed two metering PDU's (AP8653)
(by the way, whta does sku mean?)

configured it, plugged in 4 D*** Servers.
Started my snmp monitoring for the outlets, and "Hey, Green-IT" all servers are running with 0.0 A,
but the overall System Load ist 0.46KW (cant find the OID for that though),
so i checked via cmdline:

apc>about
E000: Success
Hardware Factory
---------------
Model Number: AP8653
Serial Number: ZA1118045346
Hardware Revision: 02
Manufacture Date: 05/03/2011
MAC Address: 00 C0 B7 58 E6 1D
Management Uptime: 0 Days 3 Hours 24 Minutes

Network Management Card
---------------
Model Number: AP9537
Serial Number: ZA1117033951
Hardware Revision: 05
Manufacture Date: 04/26/2011

Application Module
---------------
Name: rpdu2g
Version: v5.1.2
Date: Aug 17 2011
Time: 12:14:58

APC OS(AOS)
---------------
Name: aos
Version: v5.1.4
Date: Jun 17 2010
Time: 13:46:21

APC Boot Monitor
---------------
Name: bootmon
Version: v1.0.2
Date: Jan 21 2010
Time: 13:35:57



apc>devreading power
E000: Success
0.46 kW

apc>bkreading all current
E000: Success
1: 0.0 A
2: 2.0 A

apc>olreading all current
E000: Success

1: Outlet 1: 0.0 A
2: Outlet 2: 0.0 A
3: Outlet 3: 0.0 A
4: Outlet 4: 0.0 A
5: Outlet 5: 0.0 A
6: Outlet 6: 0.0 A
7: Outlet 7: 0.0 A
8: Outlet 8: 0.0 A
9: Outlet 9: 0.0 A
10: Outlet 10: 0.0 A
11: Outlet 11: 0.0 A
12: Outlet 12: 0.0 A
13: Outlet 13: 0.0 A
14: Outlet 14: 0.0 A
15: Outlet 15: 0.0 A
16: Outlet 16: 0.0 A
17: Outlet 17: 0.0 A
18: Outlet 18: 0.0 A
19: srv15: 0.0 A
20: srv14: 0.0 A
21: srv13: 0.0 A
22: srv12: 0.0 A
23: srv11: 0.0 A
24: sw05: 0.0 A

also the data logging in the webinterface does not do anything (interval is set to 5 minutes, but its running for 24h now, and no entrys occur)

Any ideas/hints what to do?

[BillP]

the word SKU relates to "stock keeping unit" and refers to the model number which is AP8653.

Here is an article I think might relate to what you are seeing: http://nam-en.apc.com/app/answers/detail/a_id/7770

[Anonymous user]

what use is a metering with a precision of +/- 0.5 - 1A ?
anyway, thanks for the quick reply
any idea how to get more precice results (any apc product's perhaps?)

[BillP]

sorry for the delay. we had some discussion on this. i don't think we can make any short term changes right this second but we'd like to ask for some information.

how precise of measurement is expected/needed and what kind of equipment is being used that dictates this accuracy?

[Anonymous user · Accepted solution]

Regarding the precision, the "+/- 0.5 - 1A " listed in your last comment is not for the SKU that you have. Please refer a little lower in the linked page to the "APC's 2G Rack PDUs (AP8xxx)" section since you have an AP8653.
It states "APC's 2G Rack PDUs (*AP8xxx*) have an accuracy of +/- 3% of reading, +/- 1 least significant digit across the entire power and temperature range."
It looks like maybe the servers are in a lower power save mode so they are not triggering a per outlet current higher than the squelch limit. The cumulative load is high enough to be above the device and bank squelch limit so it does show up there.
Best wishes.

Link again:
http://nam-en.apc.com/app/answers/detail/a_id/7770