====== 20220506 / Migration News, scratches ======

  * deb9-deb11 migration: Plans are made to be changed...

Debian11/Slurm Upgrade was not planned to be a one-day operation:
  * E5 cluster will be shutting down, by pieces, to make room for Cascade extension (starting yesterday)
  * Cascade extension will be powered up slowly (mostly during June 2022)

then Summer holydays...

In the meantime:
  * E5 and Lake test nodes *are available* for tests and migrations purposes
    * E5: c82gluster1 is the login node (for now)
    * Lake: c6420node171 is the login node (for now)
    * Cascade: s92node01 is the login node.

Please do test and prepare your slurm scripts...

Be aware that homes and groups/teams storages (/Xnfs) are the same between systems.

Then, in September, we'll see (E5 and Lake clusters final migrations, scratches migrations).

  * Scratches

You are doing it wrong (mostly).

**DO NOT** store scripts, SGE/slurm logs, small files, source code, binaries on Scratches: it degrade general performance VERY fast, for everyone.

Scratches are meant for large temporary files, and large I/O operations, WITHIN a job. That's all.

DO cleanup!!! Everytime a job is finished, scratch should be clean up (with exception for long workflows)

**DO VERIFY** your cleanup operations!!

General purpose scratches (E5N/, Lake/) are full **again**. We will erase files older than 90 days next week (blind shoot).

{{tag> deb9-deb11, migration, scratch }}