Due to the site-wide power cut scheduled for July 31 through August 2, 2026 and maintenance and upgrade work scheduled on this occasion, the Computing Research Center has scheduled downtimes of the Systems as follows:

Central Computing System Data Analysis System (KEKCC)

July 31 (Fri), 9:00 - August 4 (Tue), 18:00
Except analysis servers and a part of Grid services

ccPortal (Online Application Portal)

July 31 (Fri), 17:00 - August 3 (Mon), 10:00

Network

Network will be unreachable or unstable sporadically from August 1 (Sat) through August 2 (Sun) to perform maintenance and upgrade of the system.

Systems not listed above will be available throughout the period.

• E-mail System (PostKEK/MailKEK)
• Web Servers (KEK Web, Research Web, Conference Web)
• KDS (Indico) System
• Conference Indico System
• Wiki System
• KEK CLOUD
• Upload Servers for Web Systems
• Software Server
• NTP Servers
• KEK Reports & Library Server
• Grid CA
• Grid Services: Top BDII, Site BDII, VOMS, IAM (Belle II dedicated service), FTS, Frontier squid HTTP caching proxy for CVMFS, and Belle II conditions database
• GakuNin
• J-PARC Network (JLAN)
• J-PARC E-Mail System

User Consultation (Tsukuba: x5770, consult@kek.jp)

August 11 (Tue) - August 16 (Sun)

Major system failure can be reported to the remote operation center at 029-864-5770 24 hours a day, but it may be fixed after the holidays if the impact is insignificant.