All NAS computing systems and the Lou mass storage system will be unavailable on Tuesday, November 8, from 6:00 a.m. to 11:59 p.m. (Pacific Time) to facilitate system patching.

The following services will be affected:

• Aitken, Pleiades, Electra, and Endeavour will not be available during this period. Jobs cannot be submitted, and there will be no access to the Lustre, NFS, or BeeGFS filesystems.
• Jobs running on Aitken, Electra, and Endeavour will be suspended for the duration and resumed when patching is complete. Interactive PBS jobs (jobs created with "qsub -I") submitted from the front ends will be killed when the front ends are rebooted for their patching.
• All Pleiades nodes (including GPUs) will be in dedicated time; jobs will be drained from the nodes prior to 6:00 a.m. (PT) on Tuesday, November 8.
• Pleiades front ends (PFEs) and Lou front ends (LFEs) will be unavailable during this period.
• The NAS Data Portal will be unavailable during this period.

For helpful information about completing jobs in advance of dedicated time, see the Knowledge Base article Running Jobs Before Dedicated Time.

We apologize for any impact this may have on your work. If you have any questions or concerns, please contact the Control Room at (800) 331-8737, (650) 604-4444, or support@nas.nasa.gov.