[139674] in North American Network Operators' Group
Re: 365x24x7
daemon@ATHENA.MIT.EDU (Marshall Eubanks)
Fri Apr 15 13:51:37 2011
From: Marshall Eubanks <tme@americafree.tv>
In-Reply-To: <BANLkTik3cOT14a34HbW+_SdNbQQQmnGWMQ@mail.gmail.com>
Date: Fri, 15 Apr 2011 13:51:29 -0400
To: George Herbert <george.herbert@gmail.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Apr 15, 2011, at 12:50 PM, George Herbert wrote:
> On Fri, Apr 15, 2011 at 6:52 AM, Marshall Eubanks <tme@americafree.tv> =
wrote:
>>=20
>>=20
>> On Apr 15, 2011, at 9:37 AM, Greg Moore wrote:
>>=20
>>> When I did this years ago I found 5 was really a minimum so that I =
could cover weekends and then had extra coverage as needed during the =
week.
>>>=20
>>> I did find it was good to swap out the graveyard shift every 6 =
months or so.
>>>=20
>>=20
>> When I worked with NASA and the Navy on remote locations that needed =
full time staffing, the rule of thumb was
>> 5 people and 4 shifts was the absolute minimum, and the people had to =
be motivated enough to pull 12 hour shifts on a regular basis (i.e., =
this
>> was very bare bones). The 4th shift was needed during the weekends.
>>=20
>> Anything less, and you would have uncovered periods if, say, 2 people =
got sick simultaneously.
>=20
> I believe that for ongoing long term operations, NASA and DOD
> standards are 6 shifts worth of people, however you juggle the
> particular shift lengths / schedules. I.e., NORAD, NASA ISS / Moon
> mission mission control, etc.
>=20
> You can do it with 5, but people need time to get sick, take
> vacations, go to training, etc.
It can be done with 5, with some stretch. There are gotcha's, and you =
need to run for a while to make sure that you have accounted for them. =
For example, with a barebones 5 person staffing there would never be =
more than 2 people on site at a time, except briefly during shift =
changes. If equipment maintenance + normal operation requires 3 people, =
say 2 manhandling gear and one watching operations, you can't do it in =
normal operations. At one site I worked with, that got to be bad enough =
that they hired an extra person specifically to address that hole in the =
schedule. (That site was remote enough that they couldn't get a temp to =
come in and fill the gap.)
The Apollo program ran their ground stations with 6 shifts, fully =
staffed on all 6. But, they had lots of money.
Regards
Marshall=20
>=20
>=20
> --=20
> -george william herbert
> george.herbert@gmail.com
>=20
