The correct term for regenerating all user and check data onto a replacement disk after a drive failure in a redundant RAID array is "rebuild." During a rebuild, the RAID controller uses the data and parity information from the remaining healthy disks to calculate and write the missing data to the new disk. This process restores the array to a healthy, fault-tolerant state. The term is standard across the storage industry and is the specific name for this internal RAID recovery operation.

A. Recalculate: This is an action performed during a rebuild (e.g., recalculating data from parity), but it is not the name of the entire process.

C. Hot backup: This refers to the process of backing up data from a live system to a separate location or medium without taking the system offline.

D. Restore: This term typically describes the process of copying data from an external backup source (like tape or a backup server) back to a primary storage system.

1. Huawei Certified ICT Associate - Storage (H13-611) V5.0 Courseware. In the "RAID Technology and Application" module

the process following a disk failure is explicitly defined. The documentation states

"When a member disk in a RAID group is faulty

a spare disk automatically replaces the faulty disk to rebuild RAID and restore data redundancy." This confirms "rebuild" as the official term for this operation. (Reference: HCIA-Storage V5.0 Training Material

Chapter on RAID Technology and Application

Section on RAID Principles and Hot Spare).

2. Patterson

D. A.

Gibson

G.

& Katz

R. H. (1988). A case for redundant arrays of inexpensive disks (RAID). Proceedings of the 1988 ACM SIGMOD international conference on Management of data

109-116. This foundational academic paper that introduced the concept of RAID uses the term "reconstruction" (synonymous with rebuilding) to describe the recovery process. Section 3.2 discusses the Mean Time To Repair (MTTR)

which includes the time to "reconstruct the lost information on the new disk." (DOI: https://doi.org/10.1145/50202.50214

Page 112).