why separate filesystems?

[Jim Gottlieb]

I have discovered that in my absence, several of our systems back in 
the good ol' US of A were set up with just one filesystem (under /).
These are systems with 135 or 300 meg disks.

I told them that it is usually a good idea to use a separate /usr file
system but couldn't answer the inevitable "why" question.  Something
about it being easier to repair a damaged file system when it's not
mounted?  They did it, they say, to avoid the problem of having space
available on the disk, but not in the right place.

Could anyone share reasons why or why not to have a separate /usr
(/usr2, ...)?

Thank you...

--
Jim Gottlieb 					Info Connections, Tokyo, Japan
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