Real world power consumption of a 7604-S or 7606-S
I'm finding that the spec sheet for an RSP720-3CXL says 310W for the supervisor itself. Assuming a dual supervisor configuration in a 7604 or 7606, has anyone put one on a watt meter and measured its actual power consumption? Example: 7604S chassis with dual 2700W DC power - chassis and fans use how much power? 2 x RSP720-3CXL at 310W each WS-X6704 with DFC4 - ???W each
On 28/06/16 00:26, Eric Kuhnke wrote:
Example: 7604S chassis with dual 2700W DC power - chassis and fans use how much power? 2 x RSP720-3CXL at 310W each WS-X6704 with DFC4 - ???W each
Way too much, is the simple answer. I did have a 7604 (non-S) with the same PSUs, 1x SUP720-3BXL, 1x WS-X6724-SFP and 1x WS-X6708-3CXL was drawing near 2kW. It's not healthy, please consider how much you'll spend in electricity vs. something else. For example, the ASR9001 uses a 5th of the power. Cisco do also have a power calculator, too. It's conservative but not overly so: http://cpc.cloudapps.cisco.com/cpc/launch.jsp -- Tom
Yes, very much agreed, part of the reason why I'm looking to do the watts per linecard calculation is to illustrate how it's not healthy except in certain places. As an edge aggregation device in a very small city in a rural western US state where the electricity is 6 cents/kWh, the 24x7 load from a 7604 that eats 950W with supervisors and a 6724SFP linecard is not so terrible. In this case the colo space for a 42U rack is sometimes literally free. In a IX point/datacenter/colocation environment where rack and power costs real money, not so much. On Mon, Jun 27, 2016 at 5:26 PM, Tom Hill <tom@ninjabadger.net> wrote:
On 28/06/16 00:26, Eric Kuhnke wrote:
Example: 7604S chassis with dual 2700W DC power - chassis and fans use how much power? 2 x RSP720-3CXL at 310W each WS-X6704 with DFC4 - ???W each
Way too much, is the simple answer.
I did have a 7604 (non-S) with the same PSUs, 1x SUP720-3BXL, 1x WS-X6724-SFP and 1x WS-X6708-3CXL was drawing near 2kW.
It's not healthy, please consider how much you'll spend in electricity vs. something else. For example, the ASR9001 uses a 5th of the power.
Cisco do also have a power calculator, too. It's conservative but not overly so:
http://cpc.cloudapps.cisco.com/cpc/launch.jsp
-- Tom
On 6/27/16 5:35 PM, Eric Kuhnke wrote:
Yes, very much agreed, part of the reason why I'm looking to do the watts per linecard calculation is to illustrate how it's not healthy except in certain places. As an edge aggregation device in a very small city in a rural western US state where the electricity is 6 cents/kWh, the 24x7 load from a 7604 that eats 950W with supervisors and a 6724SFP linecard is not so terrible. In this case the colo space for a 42U rack is sometimes literally free.
In a IX point/datacenter/colocation environment where rack and power costs real money, not so much.
2 x ( 4 x 10Gig) linecards is really as fast as it goes no over-subscribed. It's been rather a long time or possibly never since that platform was cutting edge on a PPS/Watt basis. Today at roughly double the power consumpution per slot you can have between 16 and 36 hundred gig ports or 48 x 10gig at half the power consumption.
On Mon, Jun 27, 2016 at 5:26 PM, Tom Hill <tom@ninjabadger.net> wrote:
On 28/06/16 00:26, Eric Kuhnke wrote:
Example: 7604S chassis with dual 2700W DC power - chassis and fans use how much power? 2 x RSP720-3CXL at 310W each WS-X6704 with DFC4 - ???W each
Way too much, is the simple answer.
I did have a 7604 (non-S) with the same PSUs, 1x SUP720-3BXL, 1x WS-X6724-SFP and 1x WS-X6708-3CXL was drawing near 2kW.
It's not healthy, please consider how much you'll spend in electricity vs. something else. For example, the ASR9001 uses a 5th of the power.
Cisco do also have a power calculator, too. It's conservative but not overly so:
http://cpc.cloudapps.cisco.com/cpc/launch.jsp
-- Tom
On 28 June 2016 at 01:26, Tom Hill <tom@ninjabadger.net> wrote:
On 28/06/16 00:26, Eric Kuhnke wrote:
Example: 7604S chassis with dual 2700W DC power - chassis and fans use how much power? 2 x RSP720-3CXL at 310W each WS-X6704 with DFC4 - ???W each
Way too much, is the simple answer.
I did have a 7604 (non-S) with the same PSUs, 1x SUP720-3BXL, 1x WS-X6724-SFP and 1x WS-X6708-3CXL was drawing near 2kW.
It's not healthy, please consider how much you'll spend in electricity vs. something else. For example, the ASR9001 uses a 5th of the power.
+1 for the asr9001 route. For the record though see below, I've tried to supply you figures from different model 7600s but we mostly hvae 7606-S's. These are all single SUP/RSPsystems. Cheers, James. 7606-S#show power system power redundancy mode = redundant system power total = 2669.10 Watts (63.55 Amps @ 42V) system power used = 1620.78 Watts (38.59 Amps @ 42V) system power available = 1048.32 Watts (24.96 Amps @ 42V) Power-Capacity PS-Fan Output Oper PS Type Watts A @42V Status Status State ---- ------------------ ------- ------ ------ ------ ----- 1 PWR-2700-AC 2669.10 63.55 OK OK on 2 PWR-2700-AC 2669.10 63.55 OK OK on Pwr-Allocated Oper Fan Type Watts A @42V State ---- ------------------ ------- ------ ----- 1 FAN-MOD-6SHS 180.18 4.29 OK Pwr-Requested Pwr-Allocated Admin Oper Slot Card-Type Watts A @42V Watts A @42V State State ---- ------------------ ------- ------ ------- ------ ----- ----- 1 WS-X6748-SFP 322.14 7.67 322.14 7.67 on on 2 WS-X6704-10GE 362.46 8.63 362.46 8.63 on on 5 RSP720-3CXL-10GE 378.00 9.00 378.00 9.00 on on 6 (Redundant Sup) - - 378.00 9.00 - - 7606-S#show power system power redundancy mode = redundant system power total = 2669.10 Watts (63.55 Amps @ 42V) system power used = 2137.38 Watts (50.89 Amps @ 42V) system power available = 531.72 Watts (12.66 Amps @ 42V) Power-Capacity PS-Fan Output Oper PS Type Watts A @42V Status Status State ---- ------------------ ------- ------ ------ ------ ----- 1 PWR-2700-AC 2669.10 63.55 OK OK on 2 PWR-2700-AC 2669.10 63.55 OK OK on Pwr-Allocated Oper Fan Type Watts A @42V State ---- ------------------ ------- ------ ----- 1 FAN-MOD-6SHS 180.18 4.29 OK Pwr-Requested Pwr-Allocated Admin Oper Slot Card-Type Watts A @42V Watts A @42V State State ---- ------------------ ------- ------ ------- ------ ----- ----- 1 WS-X6748-GE-TX 325.50 7.75 325.50 7.75 on on 2 WS-X6748-SFP 254.94 6.07 254.94 6.07 on on 3 WS-X6704-10GE 295.26 7.03 295.26 7.03 on on 4 WS-X6748-GE-TX 325.50 7.75 325.50 7.75 on on 5 (Redundant Sup) - - 378.00 9.00 - - 6 RSP720-3CXL-10GE 378.00 9.00 378.00 9.00 on on 7604(non -S)#show power system power redundancy mode = redundant system power total = 2669.10 Watts (63.55 Amps @ 42V) system power used = 760.20 Watts (18.10 Amps @ 42V) system power available = 1908.90 Watts (45.45 Amps @ 42V) Power-Capacity PS-Fan Output Oper PS Type Watts A @42V Status Status State ---- ------------------ ------- ------ ------ ------ ----- 1 PWR-2700-AC/4 2669.10 63.55 OK OK on 2 PWR-2700-AC/4 2669.10 63.55 OK OK on Pwr-Allocated Oper Fan Type Watts A @42V State ---- ------------------ ------- ------ ----- 1 FAN-MOD-4HS 57.54 1.37 OK Pwr-Requested Pwr-Allocated Admin Oper Slot Card-Type Watts A @42V Watts A @42V State State ---- ------------------ ------- ------ ------- ------ ----- ----- 1 WS-SUP720-3B 282.24 6.72 282.24 6.72 on on 2 WS-X6704-10GE 295.26 7.03 295.26 7.03 on on 3 WS-X6548-GE-TX 125.16 2.98 125.16 2.98 on on
participants (4)
-
Eric Kuhnke -
James Bensley -
joel jaeggli -
Tom Hill