Re: [SAGE] 2-post vs. 4-post racks

[Robert Haskins <rhaskins@cnetwork.com>]

The setup you describe is not uncommon at all, though I don't work in a 
seismically active area. Assuming you are using well constructed racks 
and correct racks/shelving for the weight load in question, you should 
be set. The rating information should be available online or from the 
colo provider.

A former employer had a number of Sun E450's (and similar sized 
equipment) in two post racks and proper shelving without a problem. A 
diferent former employer had similar sized equipment but it had the 
seismically add-on braces, etc. that worked well too. I don't recall if 
that was a 2-post or 4-post rack system though.

Guy B. Purcell wrote:
> I now work for a company that has nothing but 2-post racks in their 
> production colo.  They have a ton of 1U Intel/Linux servers stacked on 
> shelves in those racks, but also an entire rack with Sun V280Rs on 
> shelves, and a Sun L1000 tape library on a shelf about chest-high.  This 
> is the first time I've seen 2-post racks used for anything more than 
> network gear and small servers (eg. Sun Netras).  It looks dangerous to me.
> 
> Anyone have experience with using 2-post racks with large equipment?  Is 
> it safe, or will these things twist & buckle in the next earthquake?
> 
> -Guy
> 
>