On 03/30/11 8:35 PM, Fajar Priyanto wrote:
Is IBM and Dell 42U rack compatible in dimension, rails, etc? Can we put IBM servers into Dell rack?
racks can have 3 sizes of threaded holes (10-32,12-24, or M6. 12-24 is most common nowdays in USA at least), or large square holes ('universal') that you can put snapnuts into with either of the two thread sizes. the screw spacing is totally standarized as is the width between the racks. the depth is variable, most servers prefer to mount in 26-29" deep racks.
pretty much everything new is square hole.
each company tends to use their own rail systems, but usually have several options available when you order a given server. rails are usually server brand/family specific too. a lot of newer stuff, the rails 'snap' onto square hole racks without needing nearly any screws or nuts.
Due to lots of reasons, my servers often end up strapped 2-3 high on shelves
oh, see http://www.server-racks.com/rack-hole-types.html for a bit more about this, along with links to summaries of the various maker's rail systems