RG,
Date: Tue, 10 Jul 2012 21:01:49 -0400
From: "R. G. Newbury" <newbury@xxxxxxxxxxxx>
To: users@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Production server running from USB stilck with /var
on,>>
>HD
Message-ID: <4FFCD07D.7080504@xxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
>On 10.07.2012 06:07, Philip Rhoades wrote:
>>People,
>>
>>I have been using RH and Fedora since the beginning and love it!
<big snip>
So even putting /var on the hard disk would not help much?
>You should probably assemble a little cluster and then use kvm for
>virtualization. It's very speed efficient to reboot virtual
machines.
I did think of that but that does not resolve all the problems - it
allows me to create a new (virtual) server quickly and swap it in
when
it is ready to go - so there is not much downtime BUT then the
underlying OS doesn't get updated . . and I still have the same
problem
to update that. I have been thinking about using a SSD for the OS
but
it would be nice to be able to plug in a new drive without taking
the
box apart - I suppose I could look for plug-n-play SSD that can be
inserted into a drive-socket in a standard CD drive bay . .
USB sticks are not fast enough. However, you might find that an SSD
in a
portable case *with eSATA* will be fast enough not to be
objectionable.
Set things to boot from the external (in BIOS) and test it. When
ready,
halt the server, swap the SSD into the box and reboot, change the
BIOS,
and done!. Downtime maybe 4 minutes if you are quick. Data can be on
another physical drive, or replicated to a partition on the
to-be-swapped drive immediately before server shutdown.
I have a portable external drive case which cost maybe $8 more for
eSATA
capabilities and it IS fast. Waaayyyy faster than USB!
OK, I'm convinced. I think what I'll do is:
- put existing 3.5" drives into something like this:
http://www.microcenter.com/single_product_results.phtml?product_id=0354508
- Use SSD drives in something like this:
http://www.icydock.com/goods.php?id=114
Then do something like what I did for the last upgrade: create a
virtual machine with the new OS but use a physical SSD for it (instead
of a virtual drive) and then when it is ready to go, reboot it as the
new physical boot drive. Then I can just repeat the process with
another SSD in one of the other slots when the following OS is
available.
I will test out the eSATA stuff as well.
Thanks!
Phil.
--
Philip Rhoades
GPO Box 3411
Sydney NSW 2001
Australia
E-mail: phil@xxxxxxxxxxxxx
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