As an aside, replication has been implemented as part of the new Storage 
7000 family.  Here's a link to a blog discussing using the 7000 
Simulator running in two separate VMs and replicating w/ each other:

http://blogs.sun.com/pgdh/entry/fun_with_replicating_the_sun

I'm not sure of the specifics of how, but it might provide ideas of how 
it can be accomplished.

Regards.

-------- Original Message --------
Subject: Re: [zfs-discuss] continuous replication
From: Brent Jones <[EMAIL PROTECTED]>
To: Ian Collins <[EMAIL PROTECTED]>, zfs-discuss@opensolaris.org
Date: Wed Nov 12 16:46:37 2008
> On Wed, Nov 12, 2008 at 3:40 PM, River Tarnell
> <[EMAIL PROTECTED]> wrote:
>   
>> -----BEGIN PGP SIGNED MESSAGE-----
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>> Ian Collins:
>>     
>>> I doubt zfs receive would be able to keep pace with any non-trivial update 
>>> rate.
>>>       
>> one could consider this a bug in zfs receive :)
>>
>>     
>>> Mirroring iSCSI or a dedicated HA tool would be a better solution.
>>>       
>> i'm not sure how to apply iSCSI here; the pool needs to be mounted at least
>> read-only on both hosts at the same time.  (also suggested was AVS, which
>> doesn't allow keeping the pool mounted on the slave.)  at least Solaris
>> Cluster, from what i've seen, doesn't allow this either; the failover is
>> handled by importing the pool during failover.
>>
>>        - river.
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>> =OZZa
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>>
>>     
>
> It sounds like you need either a true clustering file system or to
> draw back your plans to see changes read-only instantly on the
> secondary node.
> What kind of link do you plan between these nodes? Would the link keep
> up with non-trivial updates?
>
>
>
>   

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