[Halld-online] Group area for Hall D Online and Controls

[Mark M. Ito]

The group disk thing sounds good to me. It is backed up...by them...by 
construction.

On 09/16/2011 02:27 PM, Elliott Wolin wrote:
> Hi,
>
> At Controls and Online meetings we discussed the possible need for disk
> space that is accessible by embedded computers, controls components,
> EPICS IOC's, etc.  Here we were talking about space for config files and
> program, not for voluminous data.  Two possibilities arose:
>
> - purchase a computer and set it up as a mini-fileserver
> - get space on the CUE /group disk system
>
> I propose we try using the CUE /group system to start, then buy our own
> if this does not work out.  Paul L and Kelvin E tell me there is no
> problem getting 5-20 GBytes on /group and setting it up so it can be NFS
> mounted by any of our computers on any JLab subnet.  My experience with
> getting /group/da and /group/halld mounted on computers on the  controls
> and DAQ networks bears this out.  They can allow mounting via explicit
> IP address, or via IP ranges, which would help minimize the number of
> times we need to ask them to add to the list.
>
> Note that in the former case we'd be responsible for maintaining the
> computer and disks, performing backups (or arranging with the CC for
> backups), etc.  Everything is taken care of automatically in the latter
> case.
>
> To start I propose we ask them to create /group/halldonline (suggestions
> for a better name?),  initially allocating 5 or 10 GB.  Then we can try
> mounting the new area from EEL 126, etc. and see how it works.
>
> Comments?  Discussion?  Criticisms?
>
> Thanks,
>