@@ -11,37 +11,43 @@ The hardware specification is documented on the page
Please read the following information carefully and follow the provided instructions.
There is a last step to go in order to finalize the
[process of becoming `Alpha Centauri` a Stand-Alone Cluster](#becoming-a-stand-alone-cluster). This
last step of the migration process is to include `Alpha Centauri` into the Infiniband infrastructure
We are in the
[process of becoming `Alpha Centauri` a Stand-Alone Cluster](#becoming-a-stand-alone-cluster). Planned now is the integration of the cluster into the Infiniband infrastructure
of the new cluster [`Barnard`](barnard.md).
!!! hint "Maintenance Work"
On **June 10+11**, we will shut down and migrate `Alpha Centauri` to the Barnard Infiniband
infrastructure. As consequences,
* BeeGFS will no longer be available,
* all `Barnard` filesystems (`/home`, `/software`, `/data/horse`, `/data/walrus`) can be
reached faster,
* the new Lustre filesystem `/data/octopus` will be dedicated to `Alpha` users.
On **June 4+5**, we will shut down and migrate `Alpha Centauri` to the Barnard Infiniband
infrastructure.
We already have started migrating your data from `/beegfs` to `/data/octopus`.
As consequences,
* BeeGFS will no longer be available,
* all `Barnard` filesystems (`/home`, `/software`, `/data/horse`, `/data/walrus`) can be
used normally.
For your convenience, we already have started migrating your data from `/beegfs` to
`/data/horse/beegfs`. Starting with the downtime, we again synchronize these data.
!!! hint "User Action Required"
The less we have to synchronize the faster the overall process. So clean-up
as much as possible as soon as possible.
Important for your work is:
* Do not add terabytes of data to `/beegfs` if you cannot "consume" it before June 4.
* After final successful data transfer to `/data/horse/beegfs` you then have to
move it to normal workspaces on `/data/horse`.
* Be prepared to adapt your workflows to the new paths.
Important for your work now is:
What happens afterward:
* On **May 3** we will mount BeeGFS read-only on Alpha Centauri and start the final sync
from `/beegfs` to `/data/octopus` for your convenience.
* Afterwards, the BeeGFS storage will be migrated:
* complete deletion of all user data
* complete recabling of their Infiniband connection
* Software+Firmware updates
* set-up of a new WEKA filesystem for high I/O demands (on the BeeGFS hardware)
* complete deletion of all user data in `/beegfs`
* complete recabling of the storage nodes (BeeGFS hardware)
* Software+Firmware updates
* set-up of a new WEKA filesystem for high I/O demands on the same hardware
* Do not add terabytes of data to /beegfs if you cannot "consume" it before May 5.
* Instead, you can already create workspaces for /data/octopus on login1.barnard and bring your data there for computations after May 6.
* If you have millions of files you might consider the removal of data.
In case of any question regarding this maintenance or required action, please do not hesitate to
contact the [HPC support team](../support/support.md).
