[Vagnekman-users] vagn: Service Stop 0800 CET, 2010-01-27

[Per Lundqvist]

Due to a planned downtime affecting Accumulus (see forwarded mail
below), there will be a full service stop on Vagn at:

   0800 CET Wednesday January 27

During this time no jobs will be able to run and no users will be
logged in. During the service stop we will perform OS security
updates.

We will notify you by email when vagn is available again.

/Vagn Admin

---------- Forwarded message ----------
Date: Mon, 18 Jan 2010 09:39:23 +0100
From: Kent Engström <kent at nsc.liu.se>
To: gimle-users at lists.nsc.liu.se, bore-users at lists.nsc.liu.se
Cc: accumulus-admin at nsc.liu.se, bore-admin at nsc.liu.se
Subject: Planned downtime January 26-27 affecting Gimle, Tornado, Vagn, Bore

Planned downtime schedule for January 26-27
Affecting Gimle, Tornado, Vagn, Bore

We have two planned jobs that will require downtime in the near
future:

- Preparing the Gimle Nehalem extension for the addition of
  24 new nodes.

- Preparing the Accumulus storage system for the addition of
  24 new disk servers (currently undergoing acceptance
  testing).


We will combine the two downtimes to reduce the user impact.  The
current planning is:

TUESDAY, JANUARY 26: Starting in the morning, downtime for the Nehalem
partition on Gimle while our vendor carries out installation work and
recabling to make room for the additional 24 nodes. The Nehalem
partition continues to be down until the end of the stop on Wednesday.

WEDNESDAY, JANUARY 27: At noon, downtime starts for all of Gimle and
also for the other Accumulus clients Tornado and Vagn. For a short
time in the beginning, Bore too will be down (to be scheduled
between runs). In the evening, the downtime ends for all systems.

Following these preparations, there will not have to be any downtime
when the new Nehalem nodes and the new disk servers are brought
on-line.

-- 
Kent Engström, National Supercomputer Centre
kent at nsc.liu.se, +46 13 28 4444