[M5Hosting] Network Maintenance - on Sunday Morning (US/Pacific Time)

[Michael J McCafferty]

Dear M5Hosting Customer,

	We will be performing the network upgrade which was originally
scheduled for this past Tuesday, very late tonight (early Sunday
morning). This work 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 few brief interruption as each access layer switch is
cut over to the new core switches (<1min), as trunks are established,
routes are changed, and fail-over is tested. There will also be one
longer interruption (less than 10 minutes) as servers are moved to new
VLANs. This work will be done by sub-net. If you have multiple servers,
and they are all on one sub-net, they will all be affected at the same
time. If you have servers on different sub-nets, they will be affected
at different times during the window.

	We will begin with sub-nets 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 05:00 PDT, leaving the last hour of the window
for testing, troubleshooting and rollback if necessary. 

Window Start: Sunday 7/6/08 00:01 PDT (Wed. 7/6/08 07:00 GMT)
Window End: Sunday 7/6/08 05:00 PDT (Wed. 7/6/08 12:00 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 sub-net, you may need to renumber your addresses to be all on one
sub-net. If this applies to you and we have not contacted you already,
please contact support immediately.***

	As always, your feedback on this message, the maintenance it describes
or anything else at all you might like to share with us is greatly
appreciated. We have received some great feedback which has definitely
helped us deliver better service to you. Keep it coming !

Thank you !
Mike


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Michael J. McCafferty
Principal, Security Engineer
M5 Hosting
http://www.m5hosting.com

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