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Message-ID: <11b141710511210144h666d2edfi@mail.gmail.com>
Date: Mon, 21 Nov 2005 09:44:42 +0000
From: Paulo Jorge Matos <pocmatos@gmail.com>
Reply-To: pocm@sat.inesc-id.pt
To: Alfred Brons <alfredbrons@yahoo.com>
Subject: Re: what is our answer to ZFS?
Cc: linux-kernel@vger.kernel.org
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Check Tarkan "Sun ZFS and Linux" topic on 18th Nov,  on this mailing list.
http://marc.theaimsgroup.com/?l=linux-kernel&m=113235728212352&w=2

Cheers,

Paulo Matos

On 21/11/05, Alfred Brons <alfredbrons@yahoo.com> wrote:
> Hi All,
>
> I just noticed in the news this link:
>
> http://www.opensolaris.org/os/community/zfs/demos/basics
>
> I wonder what would be our respond to this beaste?
>
> btw, you could try it live by using Nexenta
> GNU/Solaris LiveCD at
> http://www.gnusolaris.org/gswiki/Download which is
> Ubuntu-based OpenSolaris
> distribution.
>
> So what is ZFS?
>
> ZFS is a new kind of filesystem that provides simple
> administration, transactional semantics, end-to-end
> data integrity, and immense scalability. ZFS is not an
> incremental improvement to existing technology; it is
> a fundamentally new approach to data management. We've
> blown away 20 years of obsolete assumptions,
> eliminated complexity at the source, and created a
> storage system that's actually a pleasure to use.
>
> ZFS presents a pooled storage model that completely
> eliminates the concept of volumes and the associated
> problems of partitions, provisioning, wasted bandwidth
> and stranded storage. Thousands of filesystems can
> draw from a common storage pool, each one consuming
> only as much space as it actually needs.
>
> All operations are copy-on-write transactions, so the
> on-disk state is always valid. There is no need to
> fsck(1M) a ZFS filesystem, ever. Every block is
> checksummed to prevent silent data corruption, and the
> data is self-healing in replicated (mirrored or RAID)
> configurations.
>
> ZFS provides unlimited constant-time snapshots and
> clones. A snapshot is a read-only point-in-time copy
> of a filesystem, while a clone is a writable copy of a
> snapshot. Clones provide an extremely space-efficient
> way to store many copies of mostly-shared data such as
> workspaces, software installations, and diskless
> clients.
>
> ZFS administration is both simple and powerful. The
> tools are designed from the ground up to eliminate all
> the traditional headaches relating to managing
> filesystems. Storage can be added, disks replaced, and
> data scrubbed with straightforward commands.
> Filesystems can be created instantaneously, snapshots
> and clones taken, native backups made, and a
> simplified property mechanism allows for setting of
> quotas, reservations, compression, and more.
>
> Alfred
>
>
>
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--
Paulo Jorge Matos - pocm at sat inesc-id pt
Web: http://sat.inesc-id.pt/~pocm
Computer and Software Engineering
INESC-ID - SAT Group
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