The percentage of unavailable node hour in this fiscal year, which excludes scheduled maintenance, is 0.56%.

Description

• If a job is aborted because of PN failure, the job will be restarted using another node automatically.
• The disk system employs RAID6 configuration. Most of the disk failures have no influence on user program execution.

Number of components

Processor Nodes and IXS

• Processor Node : 5120 nodes
• IXS : Internode Crossbar Switch

Hard disks

• User disks (about 4.7 PB)
• Work disks (about 13.5 PB)

Login server, etc.

• Login servers
• Remote servers
• Various other servers, network devices