April 12th 2008
If p is the perimeter of a right angle triangle with integral length sides, {a,b,c}, there are exactly three solutions for p = 120.
{20,48,52}, {24,45,51}, {30,40,50}
For which value of p < 1000, is the number of solutions maximised?
WARNING: CONTAINS MATHEMATICS
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April 3rd 2008
When I first heard about ZFS and its features, I was intrigued by a comment by Bill More about the possibility of having a database or other app directly consume the DMU that ZFS uses for filesystems or volumes. After I did a spot of research when editing the ZFS page on Wikipedia I noticed the “Last Word In Filesystems” pdf has been updated since I last looked, here are the 2 pages that excited me. With Suns recent acquisition of MySQL and lustre we seem to have arrived there now. Lustre support is excellent as it solves the only failing of ZFS, that it is not clustered.
The in-kernel CIFS stuff gets a mention too
See the full presentation and Bill Moore’s slightly outdated video
April 3rd 2008
After me banging on for a year about how cool ZFS is, my boss is finally convinced and wants to get a Thumper (or 2). Depending on budgetary constraints we may be getting a couple of these to implement a warm backup solution for our current data and about 5 years worth from now (they are 24Tb each)
48 Drives in a 4U rackmount for 20k, great value and unbeatable storage density.