On Thu, Oct 31, 2013 at 09:54:14AM +0100, trifo wrote: > I am running a web site using Apache httpd on several server nodes to > provide high availability and performance. At present, the web content > resides on a clustered filesystem (GPFS) to ensure that all the nodes serve > the same content in any moment. > > Well, GPFS is quite an expensive product, thus the management tries to get > rid of it. Now my question is this: how to build a high performance > environement without a clustered filesystem? Where to store the html files, > and how to ensure the consistency between nodes? Get a cheaper product? DRBD perhaps? GFS2? Lustre? can iRODS do what you need? If I understand how GPFS works, you might wind up buying much more storage, but everyone keeps saying that storage is cheap.... > (we have mostly static html pages, but over 400k of them. And there is a > part which changes regularly) Does the content have to be absolutely identical 100% of the time, or can occasional changes ripple through the system on a scale of seconds to minutes? rsync is free. How volatile are your volatile pages? -- Mark H. Wood, Lead System Programmer mwood@xxxxxxxxx Machines should not be friendly. Machines should be obedient.
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