Contact US

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Servers with Dual PSU being fed from 2 phases / UPS

Servers with Dual PSU being fed from 2 phases / UPS

Servers with Dual PSU being fed from 2 phases / UPS

Just seeing if there are any issues with running servers which have dual psu installed from different phases from one UPS or a different phase from another ups?
Thanks in advance

RE: Servers with Dual PSU being fed from 2 phases / UPS

No problem at all. But it is better practice, if you have more than one UPS to power each server's power supply from different UPS, just for redundancy.

Electro-mechanic Engineering

RE: Servers with Dual PSU being fed from 2 phases / UPS

Mr Jibbles -
   If it is possible, you DO want to run the redundant Power supplies from different AC sources. Definitely not from the same outlet or wall circuit, preferably from a differnt circuit breaker in your power panel, and if possible from a different power company circuit supplying power to your building. I was in a high rise once where the building had access to completely different power grids - an unusual situation. If you're running a Data Center size UPS, it doesn't matter that much, but if you're running individual UPS's, it's nice to improve your odds that if power to one UPS fails, power to the other won't have failed at the same time. You're protecting yourself against local power interruptions - secretaries plugging in too many electric heaters and popping a breaker, facilities staff plugging in a floor buffer where they shouldn't, etc.

Fred Wagner


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close