[OpenAFS] Replication, Fail-over, Disconnected Operation and Caching

[Jeffrey Altman]

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Derrick Brashear wrote:
> 
> 
> On Jan 25, 2008 1:32 PM, Harald Barth <haba@kth.se <mailto:haba@kth.se>> 
> wrote:
> 
>      > Regardless, there are. I wouldn't try something over 20gb.
> 
>     We are not quite there yet, ftp.stacken.kth.se
>     <http://ftp.stacken.kth.se> Solaris 10 on old
>     Compaq x86:
> 
>     # /usr/afs/*/fs getcac
>     AFS using 14963631 of the cache's available 16000000 1K byte blocks.
> 
>     afsd -stat 62500 -daemons 27 -volumes 250 -afsdb -dcache 62500 -c
> 
> 
> It *might* work over 20gb but if it does I bet the lookups of dcache 
> blocks make it slow.

These comments are (of course) specific to the UNIX cache manager.

The Windows cache manager on 32-bit platforms is limited to 
approximately 1.2GB and on 64-bit platforms I run with a 20GB cache but 
the theoretical limit is in the 512TB range provided you have enough 
disk storage.

Jeffrey Altman

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