[Kelvin-users] Status of Cluster Filesystems

[Sean McGrath]

Dear all, apologies if you receive this notification multiple times.

We have been carrying out some work on the Cluster Filesystems of late and want
to bring you up to date on that and thank you for your patience with it.

/home & /projects
-----------------

These file systems have now been migrated from the old degraded hardware to the
enterprise storage solution that is part of IS Services infrastructure. We would
like to thank our colleagues in IS Services for their assistance with that. We
also wish to express our gratitude to the PI's who helped to fund this move.

This change is complete and should be seamless to you, the data now resides on
supported hardware that is in warranty and is still available as usual from
/home and /projects on all cluster nodes.

We would like to take this opportunity to remind you of the nature of the /home
and /projects file systems. /home is backed up monthly for disaster recovery
purposes only. /projects is a scratch space and is not backed up.

This means that we work from the assumption that any data saved in /projects is
saved there with the understanding that it is at risk and is not recoverable if
it is lost for any reason.

/gscratch
---------

The /gscratch file system has now been returned and has 39 Terabytes of space.

This filesystem is intended to be used to save transient data only and should
not be used to save important data.

This file system is being provided by the old hardware that used to provide the
other cluster file systems. We would remind you that this hardware is in a very
degraded state and it could fail at any time. When it fails, and it will fail at
some stage, any data saved to /gsratch will be irrecoverably lost. Please, do
not save any data to /gscratch that you cannot afford to loose. Nor will
/gscratch be backed up by TCHPC.

Any data in /gscratch that is older than 60 days will be automatically deleted
without exception. This is done in order to ensure that it is not filled with
old stale data and is accessible for users.

/gscratch has global read and write permissions for everyone, i.e. any user can
read and or delete any data there. This is done in order to simplify access to
the file system for all users but it obviously means that you should not store
sensitive data there.

Our data policy is available at: http://www.tchpc.tcd.ie/resources/datapolicy

Regards

Sean

--
Sean McGrath

Systems Administrator

Trinity Centre for High Performance and Research Computing
Trinity College Dublin
https://www.tchpc.tcd.ie/