R
redundancy A mechanism that allows a backup device to
automatically take over services from a faulty device to
ensure uninterrupted running of the system.
redundant array of
independent disks
(RAID)
A storage technology that combines multiple physical
drives into a logical unit for the purposes of data
redundancy and performance improvement.
S
server A special computer that provides services for clients
over a network.
system event log
(SEL)
Event records stored in the system used for subsequent
fault diagnosis and system recovery.
B.5 U-Z
U
U
A unit dened in International Electrotechnical
Commission (IEC) 60297-1 to measure the height of a
cabinet or chassis. 1 U = 44.45 mm
UltraPath
Interconnect (UPI)
A point-to-point processor interconnect developed by
Intel.
FusionServer Pro XH321 V5 Server Node
Maintenance and Service Guide B Glossary
Issue 17 (2021-03-09) Copyright © Huawei Technologies Co., Ltd. 170
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