Recommendation for a 5 stack of WS-C3850-48U-L

[Anonymous user]

Hi-

We're preparing to refresh our Cisco 3750's with WS-C3850-48U-L's each configured with a C3850-NM-2-10G. Our limit is 5 per stack. 

The draw of one switch at 100% utilization is 117 Watts. 

Add 48 Cisco 7945 phone's drawing 12 Watts each and each switch could potentially draw 693 Watts. 

Multiply that by 5 switches per stack and you're looking at a maximum potential draw of 3465 Watts.  I need a UPS that will keep that switch stack alive for 30 minutes in one building and another UPS that would keep that alive for an hour.

In the first building there are 12 stacks altogether.

What UPS do I need?

If you want to cut a third off that consumption knock each switch down to 486 which reduces the 5 stack down to 2430.

[BillP]

Hi,

You can use the APC selector tool at this link to find a UPS

http://www.apc.com/us/en/support/resources-tools/product-selectors.jsp

When I entered your load 3465 watts based on 120 volts the suggested products are SRT5000, SRT6000, or Symmetra LX

I recommend you contact local sales support at 1-800-890-4272 Monday - Friday 8 AM - 8 PM Easter time or if you prefer I will ask one of the sales reps to e-mail you. They will discuss your needs and build a solutions that fits properly. 

[Anonymous user · Accepted solution]

Thanks Bill-

Once I entered the hour uptime it modfied the recommendation to the Smart-UPS VT.  I think you're right about getting some sales help.

Thanks

Charles