[OpenAFS] Partial replication

[Derek Atkins]

Well, if you do NOT recplicate the volumes closer to root, then users
will not be able to access that part of the tree.  For example, assume
you do not replicate root.cell, that means if your server with
root.cell goes down, then _ALL_ of your cell will become unavailable,
because /afs/bayour.com will not be available (therefore you cannot
traverse it).

Also keep in mind that your upper-level volumes are generally small.
For example, the athena.mit.edu root.cell is only 45k.
/afs/athena/project is 172k.  We're not talking huge volumes of disk
space, here.

Besides, a 100G IDE drive is $200.

-derek

Turbo Fredriksson <turbo@bayour.com> writes:

>     Derek> Similarly, /afs, /afs/cell, /afs/cell/user, and other core
>     Derek> cell directories can/should be replicated, because your
>     Derek> volume set is also quazistatic.
> 
> So THESE are what _I_ should really replicate? Low on disk, remember...
> Oki, so I won't have much use of my 'replicas' but it should ease a 
> restore if the main server crash, and also WHEN (hopefully WHEN and not
> IF :) I get more disk for my 'replicas'... ?

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord@MIT.EDU                        PGP key available