[Hallc] cdaq cluster will be offline line Wed through Friday; Reminder of Counting House work

[Brad Sawatzky]

Dear Collaborators,

This is a reminder that the Hall C linux cluster (cdaqfs, cdaqlX,
ccomptlX, etc) will be offline starting Wednesday, August 8 in
preparation for the hardware move.  We'll bring it back online as soon
as we can, but don't make any plans until Friday, Aug 10.

Also note that this will likely mean disruption to any devices on the
the Hall C subnets.  This includes devices in the Hall and in the G0
cage.  Network access will be restored to the Hall, but the subnet will
likely change.  Contact brads at jlab.org if this will impact you.

As noted earlier, the reason for this interruption is the Counting House
renovation work that will be starting soon.  If you have equipment on
the *main floor* of the counting house, you should make sure that it is
removed by the end of this week (ie. Aug 10).

-- Brad

-------- Earlier email re: Counting House renovations --------
>
> As many of you know, the Counting House will be seeing some renovation
> work over the summer.  This will impact physical access to that
> building, and will result in some interruptions to the cdaq network and
> computer systems.
>
> -------------------------------
> Main floor of the Counting House:
> -------------------------------
> The main floor of the Counting House will become a construction zone
> starting the first or second week in August.  If you have hardware or
> other systems on the main floor, get them out of there NO LATER
> than August 10.  Be aware that JLab resources will be constrained by
> related work between now and then, so Users should bring their own
> manpower and try to get in earlier rather than later.
>
> - The cdaqlX machines will be moved during the week of Aug. 7.  You
>   should anticipate a shutdown and loss of access to those machines and
>   associated services for at least a couple of days.  When they return,
>   you will be able to access them in the usual way (same names, same IP
>   addresses, etc.)
>
> - Note that there will also be disruption to the network in the Hall as
>   well
>
>
> -------------------------------
> 2nd floor of the Counting House:
> -------------------------------
> No major work will be done on the second floor.  I gather that the
> windows will be replaced, and a roof-mounted A/C unit will be
> refurbished/replaced.   Power, air-conditioning, and network are
> supposed to remain intact.
>
> - Access to the second floor will revert to the exterior stairs on the
>   north end of the building at some point.
>
> - I would recommend and encourage that users clean out their cubes,
>   particularly those near the windows.  Do this sooner rather than later
>   if you wish to take advantage of the elevator (which will likely be
>   disabled at some point).
>
> - The hardware in the G0 cage will remain physically 'safe', but should
>   certainly be powered down!
>
>
> -------------------------------
> Hall C (Experimental Hall -- ie. where the detectors are):
> -------------------------------
> The majority of the Qweak related hardware has already been removed from
> the Hall.  The Hall will remain open and will not be directly impacted
> by the Counting House work.  However, it *will* be a major construction
> area, so access and Tech support may be significantly constrained.
>
> - Note that the move of the network hardware will disable the "Hall C"
>   subnets inside the Hall.  Arrangements are being made to re-establish
>   network for the following devices:
>     - Network cameras
>     - the Compton windows machine near the labyrinth entrance
>     - the Tech's computer (hopefully we'll get a wifi AP set up again)
>   If you have a critical system that is not on this list, email
>   brads at jlab.org and tell me what it is.
>
> -- Brad

-- 
Brad Sawatzky, PhD <brads at jlab.org>  -<>-  Jefferson Lab / Hall C / C111
Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: brads-page at jlab.org
The most exciting phrase to hear in science, the one that heralds new
  discoveries, is not "Eureka!" but "That's funny..."   -- Isaac Asimov