LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices


Reply
  Search this Thread
Old 07-04-2002, 01:43 PM   #1
Azriel
LQ Newbie
 
Registered: Jun 2002
Location: Canada
Distribution: RedHat 7.3
Posts: 7

Rep: Reputation: 0
Lightbulb Interconnect power supplies?


I have two computers but both have only 3 power supply options for hdd's and cdrom's. I happen to have 2 HDD ,a CD-Rom and a CD-RW. Is it unwise to run the two computers side-by-side and have one of the power connectors running from one computer to the other?

Are there any viable reasons anyone can suggest as to why this might be a bad idea?

Thanks for any input.
Az
 
Old 07-04-2002, 02:02 PM   #2
acid_kewpie
Moderator
 
Registered: Jun 2001
Location: UK
Distribution: Gentoo, RHEL, Fedora, Centos
Posts: 43,417

Rep: Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981Reputation: 1981
what's wrong with buying just a couple of power splitters or something, only what.. $4 each? my box is full of them
 
Old 07-06-2002, 11:50 PM   #3
bdp
Member
 
Registered: Apr 2002
Distribution: RH 9
Posts: 230

Rep: Reputation: 30
The two primary concerns when powering multiple devices off of a single power supply is phase lag between devices and that the potential of each ground is exactly the same. A difference in ground can occur because some supplies use a center-tap transformer and you have to _assume_ that the windings are both exactly the same. This is usually true, but not always. If two separate supplies are used in the two cases but some drive connectors are rerouted from one case to the other, a difference in ground will result in a current flowing through one drive to the case or possibly through a HD data ribbon. Sure, this is unlikely but I saw somebody blow a $4000 HV supply because of exactly this scenario... it does happen. The thing to do is to run a wire (16 Ga or so) between both cases to be _sure_ that both cases level off at the same ground potential.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Multiple Power Supplies tommyr1216 Linux - Hardware 1 07-25-2005 03:42 PM
FC4 broke PowerTerm Interconnect. HELP! rgbrock1 Fedora 0 06-17-2005 10:41 AM
Dell recalling 1 million power supplies s34n General 4 10-09-2004 01:51 PM
I need a second opinion about power supplies Bigg Mike Linux - Hardware 11 08-12-2004 01:51 AM
What package supplies dig? bonf Linux - Networking 2 11-07-2003 10:30 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 12:05 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration