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The Gap Between High Performance and High Availability

datacenterOver at Computer Weekly, Clive Longbottom contrasts the architectures of high-performance and high-availability clusters. And while users may request the best of both worlds, the end game often comes down to money.

Start from what the organisation really needs in the way of HA and HPC and design accordingly – ensure the costs of each approach are made apparent to the business so it can make the final decision. You may be surprised that what started out as a solid need for a 100% available platform quickly becomes a 99.999% or less need – and that small decrease in availability can mean the difference of millions of pounds in approach if it transpires that a live-live mirror across multiple datacentres is not required.

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