[M5Hosting] Re: Network Maintenance - on Tuesday Night (US/Pacific Time)

[Michael J McCafferty]

M5Hosting Customer,

	There was typographical error in the maintenance announcement which was
sent on Sunday. The maintenance is to happen this Tuesday, not 3 months
ago. The correct dates and times are: 

Window Start: Tuesday 7/1/08 22:00 PDT (Wed. 7/2/08 05:00 GMT)
Window End: Wednesday 7/2/08 02:00 PDT (Wed. 7/2/08 09:00 GMT)
Duration: Each customer may notice a few short interruptions, and one
longer interruption. Total impact for any one server should be less than
15 minutes.

	Sorry for the confusion.

Sincerely,
Mike

On Sun, 2008-06-29 at 11:54 -0700, Michael J McCafferty wrote:
> Dear M5Hosting Customer,
> 
> 	We will be performing a network upgrade on Tuesday night which will
> cause short interruptions over the course of a 4 hour maintenance
> window.
> 
> 	We are replacing our core Layer 2 switches with new, larger, faster and
> smarter Layer 3 switches and breaking large VLANs down to smaller ones.
> This will reduce the size of broadcast domains, and allows routing of
> internal traffic to be done on a very fast layer 3 switch instead of on
> the border routers.
> 
> 	There will be a brief interruption as each access layer switch is cut
> over to the new core switches (<1min), another one (1min) as trunks are
> established, as well as one longer interruption (less than 10 minutes)
> as system VLANs are changed. This work will be done by subnet. If you
> have multiple servers, and they are all on one subnet, they will all be
> affected at the same time. If you have servers on different subnets,
> they will be affected at different times during the window.
> 
> 	We will begin with subnets which will have an impact on fewer customers
> and users first, and do the ones with the most impact later. We expect
> to be done by 01:00 PDT, leaving the last hour of the window for
> testing, troubleshooting and rollback if necessary.
> 
> Window Start: Tuesday 4/1/08 22:00 PDT (Wed. 4/2/08 05:00 GMT)
> Window End: Wednesday 4/2/08 02:00 PDT (Wed. 4/2/08 09:00 GMT)
> Duration: Each customer may notice a few short interruptions, and one
> longer interruption. Total impact for any one server should be less than
> 15min.
> 
> 	*** Note: If you currently have a server with IP addresses on more than
> one subnet, you may need to renumber your addresses to be all on one
> subnet. If this applies to you and we do not contact you by Sunday
> evening, please contact support.***
> 
> Thank you !
> Mike
> 
> 
-- 
************************************************************
Michael J. McCafferty
Principal, Security Engineer
M5 Hosting
http://www.m5hosting.com

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