Re: Replication and migration requirements

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From: Mike Eisler (mike@eisler.com)
Date: 08/20/01-02:09:55 PM Z 

Message-ID: <3B816083.B7476495@eisler.com>
Date: Mon, 20 Aug 2001 12:09:55 -0700
From: Mike Eisler <mike@eisler.com>
Subject: Re: Replication and migration requirements

> All we have today is proprietary, block-level protocols like
> Sun's SNDR, EMC's SRDF, or NetApp's SnapMirror.  I don't
> think any of those move file open or lock state either, but
> I'm sure they're widely used, and by mission critical apps.

I'm sure that none of them are used with writeable, migratable
filesets.

> A good initial stab would be a protocol that does a good
> job of creating read-only replicas and the synchronization
> of periodic snapshots.  If that is successful (and if anyone's

Which is exactly where we end up if we constrain the
problem in the manner you listed (which prompted my response).
	-mre

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