Ryan Golhar wrote:
This brings up an interesting question for me....We can 6 machines that
host a bunch of virtual machines. I'd like to put the virtual machines
on a shared SAN disk. If one of the physical machines goes down,
another one will take over and host a virtual machine.
Does it make sense to use GFS to manage the SAN then? IF the 4x
slowdown is there, then this may not be the way to go.
I would expect the performance on few large files (VM disk images) to
suffer much, much less than this. You have quite a few chices for this
sort of thing (GFS/GFS2, OCFS/OCFS2, VMFS), but generally, performance
between them is pretty similar. And on VMs you'll be so virtual I/O
bound that the speed of the underlying storage won't make any difference
anyway.
Gordan
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