[downtime] Emergency CS Storage Downtime, Wednesday, July 28, 2021,

Date: Wednesday, July 28, 2021 (09:30-11:30)

Who is affected:
All users of the CS department computing.

What is happening:
A single node of our file server cluster will be shutdown for the
replacement of a defective DIMM.

Why is it happening:
Hardware monitoring has indicated that a DIMM in one of the file server
cluster nodes is in a pre-failure mode and likely to fail soon. So as to
avoid an unplanned failure that may threaten the stability of the node, we
are scheduling this outage to replace the failing DIMM preemptively.

We do not anticipate any outages, but you may find that some connections
(especially CIFS/SMB) may need to be reestablished.

We will post updates to the status page: http://www.csstaff.org
as necessary.

If this downtime will cause you undue hardship, please contact
csstaff@cs.princeton.edu immediately, so we can discuss options to reduce
any negative impact. Your patience is appreciated.

Sincerely,
CS Staff
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