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Re: [Xen-users] Advice on redundant SAN/NAS storage for Xen

On Sun, 31 May 2009, Fajar A. Nugraha wrote:

Can you emulate the shared storage using DRBD? Sure. But it introduces
another layer of complexity.  Plus you need synchronous
primary-primary mode which introduced additional complexity,
performance penalty, and (taken from drbd site) "These systems are
very sensitive to failures of the replication network. Currently we
cannot generally recommend this for production use"

Some of that is a bit dated, we have been running DRBD in 4 production 10 TB clusters for over a year now.

<>
Nathan Stratton                                CTO, BlinkMind, Inc.
nathan at robotics.net                         nathan at blinkmind.com
http://www.robotics.net                        http://www.blinkmind.com

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