[CentOS] Experience with Centos running off usb-stick(s)

Peter Kjellström cap at nsc.liu.se
Fri Jul 22 09:07:30 UTC 2011


On Thursday, July 21, 2011 05:26:47 PM Dennis Jacobfeuerborn wrote:
> Hi,
> I'm trying to build a redundant duo of firewalls/routers/gateways and I'm
> thinking about not putting any disks in them and instead using a usb-stick
> raid-1 as storage.
> Has anyone any experience with this? Since the machines will be running
> pretty much only iptables, conntrackd and keepalived there is not going to
> be a lot of disk activity going on and the plan is to do all the logging on
> a remote machine which should reduce the write activity on the sticks to
> almost zero during normal operation.
> 
> I've already created a fairly minimal kickstart for such an installation
> but I'm wondering if there are any opinions out there on whether this is a
> feasible approach or if there are any gotchas I'm not aware of.

I/we have done this on a few systems with vanilla CentOS and no problems. Do 
note however that not all usb-sticks are the same (performance can vary _a 
lot_).

/Peter
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