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Comment Re:Its a Server OS... (Score 1) 303

Are you quite sure about zfs working that way? When I bought my drobo a year ago it was not the case, zfs could not be expanded a disk a the time while maintaining redundancy (ie. expanding a zraid pool with a single disk). From everything I've read that feature will be added once the BPR (block pointer something) rewrite is done.

So again, have you actually done this, or have you (as I first did) concluded that it is possible from the feature list?

Comment Two answers: (Score 1) 983

Why Use Virtual Memory In Modern Systems?

1. Every application on a modern system is running in its own virtual address space, and these virtual addresses are then mapped to (different) physical memory addresses. This is called "virtual memory".

You are talking about swap space, not virtual memory.

I have a system with Windows Vista Ultimate (64-bit) installed on it, and it has 4GB of RAM. However when I've been watching system performance, my system seems to divide the work between the physical RAM and the virtual memory, so I have 2GB of data in the virtual memory and another 2GB in the physical memory.

2. Just because Windows has poor memory management doesn't mean that swap space is bad in general, or is an outdated concept.

We are running AIX on a pSeries with 576 GB of main memory and lots of swap space, and it doesn't do this. It's a software problem - all you need is better memory management.

Comment Re:Nostalgic? (Score 1) 88

The foevon sensor exploits the trait that different wavelenghts of light penetrate to differing depths in silicon. Thus by stacking the sensors they can leave out the colour filter and just capture the "rainbow" at different points, red being available the deepest in the chip.

As someone else noted, the FUJI SuperCCD SR seems capable of capturing 11EV, and I've seen HDR images created from single exposures with multiple raw conversions.

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