I am developing an application now (for nurses who care for home bound
patients) that has many of these same issues. This trip has been very useful
in orienting me to what some of the problems are. We will need a good caching
strategy so it appears to the user of the application as if they never
leave then net. For this application I think I know how to do that ... but it
must be done.

I will look into AFS. Thanks for the tip,

BobLQ

On 12/18/06, Gregory K. Ruiz-Ade <[EMAIL PROTECTED]> wrote:
On Dec 17, 2006, at 1:33 AM, Andrew Lentvorski wrote:

> AFS really wasn't meant for online/offline operation.  It was
> really meant to bond together sites connected with slow, unreliable
> leased lines.  The lines would go up and down but rarely remained
> disconnected for extended lengths of time.

Additionally, AFS is a royal PITA to set up, requiring at least three
servers for the critical infrastructure.  Also, AFS at some point
apparently changed from caching whole files to caching file blocks,
so your cache may not include a single whole file, depending on usage
patterns of the filesystem.

We keep looking at AFS as a possible replacement for NFS (we're
looking for security, accountability and reliability), but every time
we start probing AFS, it seems we're better off just dealing with
NFS's failings than contorting our entire network around AFS.

Gregory

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Gregory K. Ruiz-Ade <[EMAIL PROTECTED]>
OpenPGP Key ID: EAF4844B  keyserver: pgpkeys.mit.edu



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