Tim, Thanks! this really helps. Hopefully we can get this done during our next maintenance window. --storage
On Tue, Mar 31, 2009 at 8:06 PM, Timothy Hollingworth thollingsworth@eplus.com wrote:
Rage...
For the 30 Amp cabinets using two Netapp X8712 PDUs, the APC AP7941 switched/metered PDU would be nice. See http://www.apc.com/resource/include/techspec_index.cfm?base_sku=AP7941. This uses an L6-30 input just like the Netapp PDU and has similar power specs. It should be a direct replacement. It will even give you a few C19 outlets per PDU to play with.
The 20 Amp X8711 PDUs are a little trickier as you get four of them, each rated for 20 amps which effectively doubles your capacity (and number of required circuits/breakers). Netapp calls this the 20 amp cabinet but in my mind, it is really a 40 amp (or a 2x20) cabinet. The above mentioned PDU would be nice but you would have to make sure you weren't overloading them as you collapse the number of PDUs/circuits/breakers from four down to two. If you can get away with 24 amps max (30 amps derated), then the AP7941 will work. It will however, require L6-30 receptacles and 30 amp circuits which may bring an electrician into play.
The AP7968 switched/metered three phase PDU would be -sweet- but again, it would require a different receptacle and a three phase breaker. This would be my choice.
-Tim Hollingworth- -ePlus Technology Inc.- -678.462.6698-
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Leeds, Daniel Sent: Friday, March 27, 2009 2:53 PM To: Fox, Adam; Sto RageC ; Toasters Subject: RE: Question regarding power controls for DS14 shelves in NetApp cabinets
same here.
remote ip access to both RLM and serial console to manage and gracefully shutdown heads cleanly remote ip access to PDU's to kill power to shelves after safe shutdown
losing AC with lots of filers/shelves gets nasty real fast and is not enjoyable.
--daniel
From: owner-toasters@mathworks.com [owner-toasters@mathworks.com] On Behalf Of Fox, Adam [Adam.Fox@netapp.com] Sent: Friday, March 27, 2009 11:13 AM To: Sto RageC ; Toasters Subject: RE: Question regarding power controls for DS14 shelves in NetApp cabinets
In our labs we use IP-addressable power strips.
-- Adam Fox Systems Engineer adamfox@netapp.com
-----Original Message----- From: Sto Rage(c) [mailto:netbacker@gmail.com] Sent: Friday, March 27, 2009 1:58 PM To: Toasters Subject: Question regarding power controls for DS14 shelves in NetApp cabinets
We recently had a brown out in one of our smaller data center, and when the power came back, the AC units did not kick in on time. The filers came online and promptly heated up, causing over temperature alarms to go off. These NetApp units are in standard NetApp cabinets so the only way (that we know of) to shutdown was to be physically on-site to turnoff the breakers to these cabinets. The question to all toasters is how do you remotely turn off the shelves when you have a situation like this? Most of the heat is generated by the shelves, and we couldn't find a way to shutdown the shelves remotely. Shutting down the heads don't help as the disks are still spinning and generating heat. Do you have remote controlled power outlets for these L6-20 /L6-30 power connectors that these shelves use? Can you recommend some solutions? thanks in advance -Sto Rage