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Next-Gen Linux File Systems: Change Is the New Constant

Apr 13, 2010, 20:32 (0 Talkback[s])
(Other stories by Anand Babu Periasamy)

[ Thanks to AV for this link. ]

"Changes impacting storage are taking place at every layer of the network architecture: Disk drives are continuing on a Moore's law-like cost/capacity curve, yet concurrently we are also seeing the growth of solid-state technology to overcome the inherent performance limitations of mechanical disk; virtualization is changing how architects think about storage, as we now have operating systems running entirely in user space within a virtual machine; and applications are choosing HTTP over FC as the preferred storage protocol.

"Given the changes taking place today, emerging file systems are employing new methods to address scalability, parallelism and new workload types.

"While these changes are impacting storage and it is extremely important to understand where we are today, storage administrators also need to look forward to prepare for future changes. Consider this: Storage capacity is increasing by 40 percent every year, and while 2-TB disk drives are a commodity today, their performance characteristics -- such as seek time and reliability -- have not improved proportionately. Solid state drives will address this, revolutionizing storage within a few years; therefore, file systems will need to support hybrid environments."

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