[CentOS-virt] Thoughts on storage infrastructure for small scale HA virtual machine deployments
grantmasterflash at gmail.com
Wed Mar 3 16:29:39 UTC 2010
> > If all the 40 VMs start copying files at the same time that would mean
> > that the bandwidth share for each VM would be tiny.
> Would they? It's a possibility, and fun to think about, but what are the
chances? You will usually run into this with backups, cron, and other
scheduled [non-business load] tasks. These are far cheaper to fix with
manually adjusting schedules than any other way, unless you are rolling in
I have a classroom environment where every VM is always doing the same thing
in step ie. formatting partitions, installing software etc.. We hit the disk
like a bunch of crazy people. I'm replacing my setup with three Intel SSDs
in a RAID0 with either iSCSI or ATAoE. The RAID0 will be synced to a disk
based storage as backup. We'll see pretty soon how many concurrent disk
based operations this setup can handle.
I'll be bonding 3 or 4 of the iSCSI box ethernet cards and then going from
there to see what each of the servers in the cloud needs as far as their
Some people, when confronted with a problem, think "I know, I'll use
Now they have two problems.
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