>  Where [a-z] is the first letter of their login name. This doesn't 
>  scale well, of course. Another (common?) method doesn't seem to scale
>  well either:
>
>  /afs/ir/users/[a-z]/[a-z]/$USER
>
>  Where the first two letters of the login name are used. This method
>  also seems like it would have a lot of collisions in directories like 
>  /afs/ir/users/s/?/* for example.

This is the scheme we use at the umich.edu cell.  We currently have
10,000 home directories (we expect to double this over the next 12
months).  The users/s/a directory has 130 entries in it, so the scaling
isn't bad for these common letters.  The nice thing about this scheme
is that it isn't overly complex which is a consideration for your
users since its them that will have to navigate whatever tree structure
you impose upon them.

Mark Giuffrida
University of Michigan, ITD
[EMAIL PROTECTED]

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