[gpfsug-discuss] Moving/copying files from one file system to another

Jonathan Buzzard jonathan at buzzard.me.uk
Wed Oct 30 12:47:07 GMT 2013

On Mon, 2013-10-28 at 11:31 -0400, Richard Lefebvre wrote:


> Also, another question, under what condition a scatter allocation better
> then cluster allocation. We currently have a cluster of 650 nodes all
> accessing the same 230TB gpfs file system.

Scatter allocation is better in almost all circumstances. Basically by
scattering the files to all corners you don't get hotspots where just a
small subset of the disks are being hammered by lots of accesses to a
handful of files, while the rest of the disks sit idle.


Jonathan A. Buzzard                 Email: jonathan (at) buzzard.me.uk
Fife, United Kingdom.

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