[NCLUG] [Poll] VPS and web mangement hosting

Kasey Erickson kasey.erickson at gmail.com
Thu Feb 23 12:18:13 MST 2012


Hi Sean,

Sorry to interject, but I was wondering if Tummy offers VPS solutions
that use SAN backend storage instead of just RAID?

Thanks,
Kasey


On Thu, Feb 23, 2012 at 11:49, Sean Reifschneider <jafo at tummy.com> wrote:
> On 02/20/2012 09:04 PM, Bob Proulx wrote:
>> I have always reasoned that real ram is the biggest cost limiter in
>> the VPS ecosystem.  It can't be overbooked, although some do overbook
>
> RAM can be expensive, but it's fairly easy.  Storage is much harder...  We
> almost never run out of memory bandwidth, but storage is easy to saturate
> unless you go with SSDs, which push the price way up if you're talking TBs
> worth...
>
> I'm pretty sure we spend more on storage than RAM in our virtual
> environment, even before the disc shortage...
>
>> applications.  It is also possible to sloppily consume ten times more
>> memory.
>
> Or more.  We had a client once that, for certain requests, one of their
> 15MB processes would use up all 4GB of RAM on the system.  That was
> wonderful!
>
>> Yes.  Although RAID can be problematic in implementation it has still
>> saved me more times than I can remember.  I wouldn't want to be
>
> Agreed.  We don't have any machines we host that don't have RAID...  Unlike
> a power supply when it fails, if a disc fails it is not a simple matter to
> get back to where the system left off.  Though we are mostly running
> redundant power supplies too.
>
>> heavy.  Trying to scrub or fsck or restore a large filesystem is
>> extremely painful.
>
> Absolutely.  "What do you mean my system won't be available for 4 hours
> because it's running an fsck?"  Then, 3 hours into it fsck decides it needs
> to start over from scratch...  ext* is nice and reliable these days, but it
> sure is hard to love.  :-)
>
> Sean
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