Scientific Data & Computing Center

[SDCC Announcements <announce AT rcf.rhic.bnl.gov>]

Summary:
The SDCC Facility and Science DMZ will undergo scheduled maintenance from 
Monday, December 18th, starting at 5 PM, through Tuesday, December 19th, 
until 9 PM EST. 




Effective Time(s):
12/18/2023 5:00 pm - 12/19/2023 9:00 pm

Group Responsible:
Network

Affected Area(s):
All SDCC services

Expected User Impact:
No access to SDCC services during downtime

Maintenance Type:
Planned Maintenance/Downtime



Description:
This extended downtime is necessary for two key activities: upgrading user 
home directories beginning on Monday (for all programs but the NSLS) and a 
network maintenance scheduled for Tuesday (affecting all customers). This 
maintenance marks the final phase of the multi-year migration of SDCC 
services to a new data center.

Impact on Services:
- Storage and Data Transfer Services: Access will be suspended starting 
Monday, December 18th, at 5 PM EST to allow for a clone of the 
user’s home directories. Special Note for NSLS Program Users: The 
NFS home directory work scheduled from Monday to Tuesday does not impact the 
NSLS program. NSLS program users should expect regular operation during this 
period (until the network maintenance begins on Tuesday).
- Computing Resources: Access to computing resources (interactive and batch), 
storage services (disk and tape), and collaborative tools (BNLBox, RCF email, 
MatterMost, web services) will be unavailable throughout the respective 
maintenance periods. 
- Batch Job Scheduling: Scheduling of new HTCondor and Slurm batch jobs will 
cease on Friday, December 15th, at 11 PM EST. Any remaining HTCondor jobs 
will be terminated on Monday, December 18th, at 3 PM.
- Interactive Sessions: Open sessions through the facility SSH gateways will 
be terminated at 5 PM on December 18th to facilitate the cloning/copying of 
user home directories.
- Email Services: The @bnl.gov email services may experience interruptions. 
Alternatively, users are encouraged to use the sdcc-staff-l AT lists.bnl.gov 
mailing list to contact SDCC staff.
- NX Service and SSH Gateway: The NX service and SSH Gateway will be 
unavailable. Existing cssh sessions initiated before the outage will continue 
to function.

Restoration of Services:
Complete restoration of services is anticipated by 9 PM EST on December 19th. 
The SDCC will notify the community through its regular mailing lists.
We apologize for the inconvenience this may cause and thank you for your 
understanding and cooperation as we complete this essential upgrade to our 
infrastructure.


SDCC Announcements page: 
https://www.sdcc.bnl.gov/news-events/sdcc-announcements
Downloadable calendar invite of this event (.ics format): 
https://www.sdcc.bnl.gov/announcements/make_ics.php?evt=Fri., 12/15/2023 2:41 
pm

This item has been posted to rcfstaff AT bnl.gov, rhic-rcf-l AT lists.bnl.gov, 
sdcc_users-l AT lists.bnl.gov, usatlas-users-l AT lists.bnl.gov, 
bnl-shared-tier3-l AT lists.bnl.gov

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