[Chugalug] cloud

Ed King chevyiinova at bellsouth.net
Mon Jan 14 15:48:07 UTC 2013


thanks Eric, I didn't even think about disk I/O issues




________________________________
From: Eric Wolf <ebwolf at gmail.com>
To: Chattanooga Unix Gnu Android Linux Users Group <chugalug at chugalug.org>
Sent: Mon, January 14, 2013 10:25:44 AM
Subject: Re: [Chugalug] cloud


I don't have experience with CenturyLink/Savvis, but one Cloud-caveat I've 
encountered is if you have an application that demands disk performance, you 
have to work really hard to get what you need in the cloud. For instance, one 
client had a big SQL query with two joins that was nearly instantaneous on my 
local machine but took 6+ minutes on Amazon EBS (even with provisioned IO). The 
answer was to move the database to ephemeral storage (usually physical, instance 
attached storage) and put more effort into optimizing the database. I've been 
told that RAIDing EBS volumes helps but I skipped over that step.

>From a sysadmin position, there's a trade off in going "cloudy". You lose a lot 
of control but you gain some freedom. And backups (in the form of snapshots) are 
super easy.

-Eric


-=--=---=----=----=---=--=-=--=---=----=---=--=-=-
Eric B. Wolf                           720-334-7734





On Mon, Jan 14, 2013 at 8:07 AM, Ed King <chevyiinova at bellsouth.net> wrote:

so, like, would anyone care to share (onlist or offlist) their experience (if 
you have any) with CenturyLink/Savvis cloud services?   I've done my own 
Google'ing and didn't like what I saw, yet, the powers that be want to continue 
down the "cloudy" path because "noone around here will work for $400/month".   

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