EU Arista DCS-7050TX-72Q-R on ebay (48x 10GBase-T + 6x QSFP+) on auctions

[nephri]

Hi,

(i'm not the seller but i'm a buyer of one of theses units)

I'm not sure if it's a great deal (in term of price) but for me it was a great deal in term of switch capabilities.

You can find on ebay Arista DCS-7050TX-72Q-R with 48x 10GBase-T + 6x QSFP+ in auctions.
Theses auctions ends often between 360€ to 420 € + 20 € for shipping.

One auction link : Nous sommes désolés...


I bought one the past week and this switch works extremely well.

Just to note:

• The air flow is on front
• You have 6 ports QSFP+ but the EOS requires "Arista compatible" modules. You can bought them on fs.com
• RJ45 Ports are not fully multi-gigabits, they only supports (100M, 1G and 10G). For 2.5G and 5G you have to use another small switch in addition.

I have now only 1 switch to handle the RJ45 network + fiber network and i was able to connect my WIFI 7 APs in 10Gb-T.
I have also QSFP+ splitted into four SFP+ without any problem.

It replace actually a Gnodal GS4008 + LB4M in a single unit while adding 10G-BaseT capability.

Best Regards,
Sébastien.

 

[grenskul]

How's the noise on these? Fighter jet?

 

[DaMnEd]

I would advise against paying that much.

These are constantly on auction and during August quite a few of them sold for 190~250. Be patient, don't go on a bidding race, set your maximum near the end and let it be.

And if you are in Europe, check if you are OK with the power consumption on these, they are a bit hungry.

 

[nephri]

For the noise, it's really acceptable in basement. It do lesser noise than the Gnodal GS4008
For pricing, maybe it's not a great deal, but i didn't find in october price near 250€...
For power consumption, i can give tomorrow what i have but 10G-BaseT use more power than fibers.

I have to also say that it exaust quite hot airflow.

 

[Navvie]

Will be watching this one. As much as I want to move to fibre, it means redoing all my networking.

Just looking up the datasheet, typical/max power draw is 340W/430W!

Perhaps I will just watch it. I have solar and a battery but...

 

[nephri]

I will see this evening. They say around 5w per 10G-BaseT port.
The typical 340W / 430W is for 50% load (i'm far from 50% since i didn't use many of the 48x RJ45 availables )

I set the "shutdown" configuration for every unused port. I use only 8x Rj45 (2x are connected on 10G-BaseT) and 5 QSFP+

 

[MountainBofh]

I own one of those. The idling power with nothing plugged in will be about 170 watts. You can remove the vendor locking on the QSFP+ ports with the following command

service unsupported-transceiver EMC 677096c7

 

[nephri]

I own one of those. The idling power with nothing plugged in will be about 170 watts. You can remove the vendor locking on the QSFP+ ports with the following command

service unsupported-transceiver EMC 677096c7

Thanks for this tip.
One week ago this serial key would save me time and money.... i bought new modules on fs.com

I admit , 170 watts is a bit high... It would be better in the 100 watts range.

 

[Stephan]

I'd skip this switch, because 10GBaseT is a bit of a pig when it comes to power consumption. For the low traffic stuff like fridge, garage doors, fence gate, etc. much lower power 1 Gbps is plenty. For the office and connection to the main servers, skip 10 and go with 25 Gbps or faster. For this power budget you can easily jump on the 100 Gbps train and use a Mellanox SN series.

 

[MountainBofh]

Only problem is that going to 25gb or faster will cost a LOT more. Both for the switch and the transceivers.

 

[gb00s]

I own one of those. The idling power with nothing plugged in will be about 170 watts ...

Little bit strange as I have 4 of them and each is 50% populated on 10G, fully populated on the 6x 40G ports and they use ~167-185W with fans set down to 45%.

 

[MountainBofh]

Little bit strange as I have 4 of them and each is 50% populated on 10G, fully populated on the 6x 40G ports and they use ~167-185W with fans set down to 45%.

I can double check later when I get home, but last time I fired mine up with only a single uplink plugged in, it was in the 170 range. I had my fans set to 30%.

 

[MountainBofh]

I fired up my DCS-7050TX-64-R, and had absolutely nothing plugged into it. Only using 1 power supply, I hooked up the power meter and giving it 10 minutes to settle in, got this reading.

 

[nephri]

I'm also checked my unit (with few RJ45 connected and 2 QSFP+)
I'm sticking 166W with near an IDLE activity.

 

[nephri]

Only problem is that going to 25gb or faster will cost a LOT more. Both for the switch and the transceivers.

Without to mention that in a house, we have a lot of devices working only with RJ45. Even if you have a fiber network, you have to deal also with a RJ45 network for legacy devices. This switch have the ability to handle all of theses with a single unit.
But i'm ok with the conclusion : This is an hungry unit. 170W is a lot...

I'm not sure if such unit can support a power-off/on every night for cost saving (like 2PM to 7PM) ? such unit are done for a 24/24 work

 

[Stephan]

Only problem is that going to 25gb or faster will cost a LOT more. Both for the switch and the transceivers.

Got it. I'm not spending more than pennies on the dollar for enterprise gear myself. Since I know my software stack, I rely on 10 year old SX60xx 40/56Gbps Mellanox switches with FDR QSFP+ DAC cables and pre-made fiber cables. Also ConnectX3 which you can get in 5-packs for a 100 bucks at times. Or the ubiquitous KAIAM LR4 LITE modules for 5 a piece. Max TCP throughput is around 5 GiB/s which frankly I already don't know what to do with.

 

[Fritz]

I own one of these, yes, it's a power hog. noise isn't that bad but I wouldn't want it in the space where I work. Air flow is front to back. not a problem for me but YMMV.
It does work very well. I use 2 breakout cables with the QSFP+ ports without any problems so either they're unlocked of breakout cables get free pass.