Re: [cobalt-users] 99.9% up time

["Jay Falconer" <cobalt@xxxxxxxxxx>]

Another way to approach this is to guarantee 100% uptime by using the same
technigue the Tier 1 providers include with your data pipes. Include a 100%
uptime SLA (service level agreement) with your web sites. If the site is
down as a result of the ISP's network or equipment and customer opens a
trouble ticket, then credit the user (for example) a free day of hosting for
every hour the site was down on the trouble ticket.

Even though your web sites will never be 100% available all year long, this
lets the customer know that if its down as a result of your equipment or
network, you will credit them for the downtime. Only a small percentage of
the customers affected by the outage will actually call in to report the
outage and obtain a trouble ticket. Those that do get a free day or two of
hosting and it's (IMHO) a great selling point.

Jay Falconer
"In The Q" E-Commerce System
www.InTheQ.com

----- Original Message -----
From: "Kris Dahl" <krislists@xxxxxxxxxxxxx>
To: <cobalt-users@xxxxxxxxxxxxxxx>
Sent: Thursday, 13 April, 2000 08:36 AM
Subject: Re: [cobalt-users] 99.9% up time


> on 4/12/00 10:27 PM, Jeff Lasman at jblists@xxxxxxxxxxxxx wrote:
>
> > Colin Smith wrote:
> >
> >>> I want to garanty a 99.9% up time to my customers.
> >>> I have an idea on how to do it but I need some advise..
> >>> I was thinking about imaging the rack once a day on another backup
rack
> >>> If anyone has done this before or has been doing it please let me
know....
> >>> Any information on garanting a 99.9% up time would be very
apprechiatted.
> >>
> >> 99.9% is 9 hours per year, that's easy. All you need for that is a good
> >> UPS and a guaranteed network link. The box will do 99.9% all on it's
own.
> >> It's worth mirroring it's internal disks though just to be sure.
> >
> > Surely you dream.
> >
> > I had started to write an example of why not, but decided not to bother.
>
> IMHO three nines is easy.  I could do that with crappy hardware and NT if
I
> was careful.  I don't think I have a single machine (even a workstation)
> that isn't 99.9% available.  Start talking about 5 or 6 nines, and I start
> getting impressed.
>
> But if you want to guarantee 99.9%, you should invest in adequate power
> protection, and keep near-line backups if at all possible.  Also
co-locating
> with a datacenter that provides the power and redundant connections with
> full BGP routing to multiple carriers would be the easiest way to do it.
> That way you aren't at the mercy of your ISP--cause its the weak link that
> determines your availibility.
>
> -k
>
>
>
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